HomeMy WebLinkAboutOrdinance 5563ORDINANCE NO.5563
AN ORDINANCE TO ADOPT THE 2011 ARKANSAS ENERGY CODE FOR
NEW BUILDING CONSTRUCTION FOR COMMERCIAL AND HIGH-RISE
RESIDENTIAL CONSTRUCTION PROJECTS INCLUDING THERMAL AND
LIGHTING EFFICIENCY STANDARDS AS REQUIRED BY A.C.A. §15-10-
205 BY AMENDING §173.08 ENERGY CONSERVATION CODE OF THE
FAYETTEVILLE CODE
WHEREAS, the Arkansas Legislature has authorized the Arkansas Energy Office to
"Promulgate reasonable rules for the purpose of (A) Implementing and prescribing enforcement
for thermal and lighting efficiency standards for new building construction; and (B) Requiring a
city or county that issues building permits for new building construction to adopt the Arkansas
Energy Code for New Building Construction" {A.C.A. § 15-10-203 (b)(3)1; and
WHEREAS, the Arkansas Energy Office has promulgated the 2011 Energy Code for
new building construction for commercial and high-rise residential structures and required cities
that issue permits for new building construction to adopt the 2011 Energy Code for new
commercial and high-rise residential construction; and
WHEREAS, the City of Fayetteville does issue such building permits and therefore must
adopt the 2011 Energy Code for new building construction for commercial and high-rise
residential structures; and
WHEREAS, pursuant to A.C.A. §14-55-206 and 207, the City of Fayetteville has
published notice in the Northwest Arkansas Times that the City Council will consider enacting
an ordinance to adopt and require that all new commercial and high-rise residential construction
must comply with the 2011 Arkansas Energy Code for new building construction for commercial
and high-rise residential structures, three copies of which are available for public inspection and
review in the Fayetteville City Clerk's Office.
NOW, THEREFORE BE IT ORDAINED BY THE CITY COUNCIL OF THE
CITY OF FAYETTEVILLE, ARKANSAS:
Section 1: That the City Council of the City of Fayetteville, Arkansas hereby repeals
§173.08 Energy Conservation Code (A) Commercial and enacts a replacement (A) as shown
below:
Page 2
Ordinance No. 5563
"(A) Commercial and high-rise residential. The 2011 Arkansas
Energy Code as promulgated by the Arkansas Energy Office is adopted
as required by A.C.A. §15-10-205 (b)(3) as applicable to all new
building construction for commercial and high-rise residential
structures."
Section 2: That the City Council of the City of Fayetteville, Arkansas hereby divides
§ 173.08 (B)(6) Appeals into subsection (a) which includes all current language and enacts a new
(b) as shown below:
"(b) The Board of Construction Appeals shall hear any appeals from
the 2011 Arkansas Energy Code interpretations by the Building Official
as called for in Section 108 of that Code."
PASSED and APPROVED this 15th day of January, 2013.
VWWIF 0-0
ATTEST:
By: ` By: rcc
ONELD RD Mayor SONDRA E. SMITH, City Clerk/Treasurer
City of Fayetteville Staff Review Form
City Council Agenda Items
and
Contracts, Leases or Agreements
1/15/2013
City Council Meeting Date
Agenda Items Only
Jeremy Pate Building Safety Development Services
Submitted By Division Department
M1 Uvn
ordinance to adopt the 2011 Arkansas Energy Code ft
amended, in accordance with Arkansas State Statute.
Cost of this request
Account Number
Project Number
Budgeted Item
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Category / Project Budget
Funds Used to Date
Remaining Balance
Budget Adjustment Attached
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Finance and Internal Services Director
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Program Category / Project Name
Program / Project Category Name
Fund Name
11.-214411 Previous Ordinance or Resolution #
Date
Original Contract Date:
2'u0Original Contract Number:
Date
Date
Received in City
Clerk's Office
Date
Received in
Mayor's Office
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Date
Revised January 15, 2009
THE CITY OF FAYETTEVILLE, ARKANSAS
DEPARTMENT CORRESPONDENCE
CITY COUNCIL AGENDA MEMO
To: Mayor Jordan, City Council
Thru: Don Man-, Chief of Staff
From: Jeremy Pate, Development Services Directorg
Date: December 21, 2012
Subject: 2011 Arkansas Energy Code for Commercial and High -Rise Residential Construction
RECOMMENDATION
Staff recommends approval of an ordinance adopting the 2011 Arkansas Energy Code for Commercial and
High-rise Residential Construction by reference, as required by state statutes.
BACKGROUND
In 2004, the Arkansas Energy Office developed the Arkansas Energy Code in order to establish minimum
standards for the design of energy -efficient buildings. This version relied almost exclusively on the
International Energy Conservation Code (IECC), 2003 Edition. In 2009, the Arkansas Legislature passed Act
1196, which provided the Arkansas Energy Office with the authority to promulgate rules and regulations that
require cities issuing building permits for new building construction to adopt the Arkansas Energy Code by
ordinance. In the most recent legislative session, Act 802 requires cities to comply with the most current version
of the Arkansas Energy Code, which is now being updated.
The Arkansas Energy Office retooled the Energy Code in 2011. For residential construction, the 2003 IECC
remains in effect. As you are aware, the Fayetteville City Council earlier this year elected to update
Fayetteville's energy code for residential construction to adopt the 2009 IECC, along with a requirement for a
HERS index score and a posted decal (Footnote: The State Energy Office is currently considering Fayetteville
as a model for their next edition of the residential energy codes). For commercial and high-rise residential
construction, 2013 marks a change in energy codes state-wide. The 2011 edition of the Arkansas Energy Code
requires cities to adopt the 2009 IECC or ASHRAE 90.1-2007, which are virtually the same. This code must be
adopted by all cities issuing building permits for new construction, beginning in 2013. A.C.A. §14-55-207
requires technical codes adopted by reference to be published in a newspaper of general circulation in the city,
and copies of the Arkansas Energy Code to be available for inspection prior to passage of the ordinance. Staff
has submitted publication, and provided the necessary copies to the Clerk's office to be in compliance with state
law.
THE CITY OF FAYETTEVILLE, ARKANSAS
None.
BUDGETIMPACT
None.
Departmental Correspondence
AN
TO: Mayor Jordan
City Council
CC: Don Marr, Chief of Staff
Jeremy Pate, Development Services Director
FROM: Kit Williams, City
DATE: December 27, 2012
RE: Statutory requirement to adopt 2011 Arkansas Energy Code
for new commercial and high-rise residential structures
Kit Williams
City Attorney
Jason B. Kelley
Assistant City Attorney
A.C.A. §15-10-205 (b)(3) gives the Arkansas Energy Office the power
to require cities "to adopt the Arkansas Energy Code for New Building
Construction ...." The Arkansas Energy Office has asserted such authority to
require cities to adopt the 2011 Arkansas Energy Code for new commercial and
high-rise residential construction. See the article in this month's City & Town
published by the Municipal League which is attached.
Accordingly, the City's Community Development Department has begun the
process to comply with the statutory requirement to adopt the 2011 Arkansas
Energy Code for new commercial and high-rise residential construction. I have
attached § 173.08 Energy Conservation Code of the Fayetteville Code. The
proposed ordinance would amend § 173.08 (A) and (B)(6).
AN ORDINANCE TO ADOPT THE 2011 ARKANSAS ENERGY CODE
FOR NEW BUILDING CONSTRUCTION FOR COMMERCIAL AND
HIGH-RISE RESIDENTIAL CONSTRUCTION PROJECTS INCLUDING
THERMAL AND LIGHTING EFFICIENCY STANDARDS AS REQUIRED
BY A.C.A. §15-10-205 BY AMENDING §173.08 ENERGY
CONSERVATION CODE OF THE FAYETTEVILLE CODE
WHEREAS, the Arkansas Legislature has authorized the Arkansas Energy Office to
"Promulgate reasonable rules for the purpose of (A) Implementing and prescribing enforcement
for thermal and lighting efficiency standards for new building construction; and (B) Requiring a
city or county that issues building permits for new building construction to adopt the Arkansas
Energy Code for New Building Construction" (A.C.A. §15-10-203 (b)(3); and
WHEREAS, the Arkansas Energy Office has promulgated the 2011 Energy Code for
new building construction for commercial and high-rise residential structures and required cities
that issue permits for new building construction to adopt the 2011 Energy Code for new
commercial and high-rise residential construction; and
WHEREAS, the City of Fayetteville does issue such building permits and therefore must
adopt the 2011 Energy Code for new building construction for commercial and high-rise
residential structures; and
WHEREAS, pursuant to A.C.A. §14-55-206 and 207, the City of Fayetteville has
published notice in the Northwest Arkansas Times that the City Council will consider enacting
an ordinance to adopt and require that all new commercial and high-rise residential construction
must comply with the 2011 Arkansas Energy Code for new building construction for commercial
and high-rise residential structures, three copies of which are available for public inspection and
review in the Fayetteville City Clerk's Office.
NOW, THEREFORE BE IT ORDAINED BY THE CITY COUNCIL OF THE
CITY OF FAYETTEVILLE, ARKANSAS:
Section 1: That the City Council of the City of Fayetteville, Arkansas hereby repeals
§173.08 Energy Conservation Code (A) Commercial and enacts a replacement (A) as shown
below:
"(A) Commercial and high-rise residential. The 2011 Arkansas
Energy Code as promulgated by the Arkansas Energy Office is adopted
as required by A.C.A. §15-10-205 (b)(3) as applicable to all new
building construction for commercial and high-rise residential
structures."
Section 2: That the City Council of the City of Fayetteville, Arkansas hereby divides
§173.08 (B)(6) Appeals into subsection (a) which includes all current language and enacts a new
(b) as shown below:
"(b) The Board of Construction Appeals shall hear any appeals from
the 2011 Arkansas Energy Code interpretations by the Building Official
as called for in Section 108 of that Code."
PASSED and APPROVED this 5`h day of February, 2013.
APPROVED:
ATTEST:
LIONELD JORDAN, Mayor SONDRA E. SMITH, City Clerk/Treasurer
I
Cities that issue building permits for new
building construction must adopt Arkansas
Energy Code by December 31, 2012
In 2004, the Arkansas Energy Office, a subdivision of
the Arkansas Economic Development Commission, de-
veloped the Arkansas Energy Code in order to establish
minimum standards for the design of energy -efficient
buildings. The 2004 version of the Arkansas Energy Code
relied almost exclusively on the International Energy
Conservation Code (IECC), 2003 Edition.
In 2009, the Arkansas Legislature passed Act 1196,
which provided the Arkansas Energy Office with the
authority to promulgate rules and regulations that
require cities and counties issuing building permits for
new building construction to adopt the 2004 version
of the Arkansas Energy Code by ordinance. At the last
legislative session, Act 1196 was amended by Act 802,
which no longer required cities to comply with the 2004
version of the Arkansas Energy Code, but by the current
version of the Arkansas Energy Code. See Ark. Code
Ann. § 15-10-205.
New rules and regulations promulgated by the
Arkansas Energy Office, including new versions of the
Arkansas Energy Code, were to be enacted in compliance
with the Arkansas Administrative Procedures Act. See
Ark. Code Ann. § 25-15-204 (describing the procedure for
adopting, amending, or repealing a state agency's rules or
regulations).
The Arkansas Energy Office retooled the Arkansas
Energy Code in 2011. For residential purposes, the
2003 edition of the IECC remains in effect. See Ark.
Energy Code for New Bldg. Constr. Supplements &
Amendments, Ark. Energy Office, available online at'
arkansasenergy org/residential/builders/energy-code.aspx
However, for commercial and high-rise residential
construction projects, American Society of Heating,
Refrigerating and Air —Conditioning Engineers
(ASHRAE) 90.1-2001 will govern until the end of the
year. In 2013, ASHRAE 90.1-2007 will govern, with
Chapter 8 of the 2003 IECC being replaced with Chapter
5 of the 2009 IECC. k
The 2011 edition of the Arkansas Energy Code places
certain requirements on cities and counties in order
to bring all cities and counties in compliance with the
Code. Specifically, cities and counties that issue building
permits for new building construction are required to
adopt the Arkansas Energy Code as amended.
The Arkansas Energy Code shall be adopted by
ordinance in all applicable cities and counties by Dec.
31, 2012. Once adopted, applicable cities and counties
are required to submit a copy of the ordinance to the
Arkansas Energy Office. However, if an applicable city
and county has not adopted the Code by Dec. 31, 2012,
a mayor or county judge is required to submit a letter
describing why the city or county is not in compliance
with the Code no later than 60 days after the deadline.
- Cities or towns enacting the Code should follow the
procedures for adopting a technical code by reference.
See Ark. Code Ann. § 14-55-207. The law requires pub-
lication in a newspaper of general circulation in the city
giving notice that three copies of the Arkansas Energy
Code have been filed either electronically or by hard
copy with the clerk or recorder of the municipality in
order to ensure the public has the opportunity to inspect
the new standards before the passage of the ordinance.
Note that in order to have the entire code you must
have copies of (1) the Arkansas Energy Code for New
Building Construction Supplements, (2) the 2003 version
of the IECC, (3) the 2009 version of the IECC, and (4)
the ASHRAE standards.
Copies of the 2003 and 2009 versions of the IECC
may be obtained by visiting the International Code
Council's website at www.iccsafe.org,.or by calling 1-800-
786-4452. The ASHRAE standards may be obtained
by visiting the ASHRAE website at www.ashrae.org,
or by calling 1-800-527-4723. The Arkansas Energy
Code for New Building Construction Supplements and
Amendments is available at:
arkansasenergy.org/residentiaVbuflders/energy-code.asp3L
TITLE XV UNIFIED DEVELOPMENT CODE
(B) Amendments, additions, and deletions. The (B)
Arkansas State Mechanical Code, Rules and
Regulations of the State HVACR Board,
governing the installation and inspections of
mechanical systems shall be amended as
follows:
(1) Application. All mechanical work, unless
specifically exempt herein, shall require the
application for and approval of a mechanical
permit from the city Building Safety Division,
prior to beginning mechanical installations in
the corporate limits of the city.
(2) Minor repairs. No permit is required for
minor repairs such as recharging of units,
filter changes, and replacement of parts
within the units.
(3) Issuance. The city Building Safety Division
is authorized to issue permits to the
following:
(a) State licensee;
(b) A permit may be issued to a property
owner for mechanical installations in a
single-family residence, provided the
property owner does the work himself,
and the building is owned and occupied
by such owner as his/her home. Such
mechanical work must strictly comply
with the requirements of this chapter.
(C) Inspection and tests.
(1) Underslab/underground;
(2) Rough -in; and/or
(3) Final.
(D) Right to inspect. The Building Safety Division
Director shall have the right to inspect and may
require tests for existing mechanical installations
when there is reason to believe that such system
is not safe for the use intended. When such
inspections or tests indicate a faulty or unsafe
system, the system shall be made safe before
the system is used.
(Ord. No. 4100, §2 (Ex. A), 6-16-98)
173.08 Energy Conservation Code
(A) Commercial. The Arkansas Energy Code, its
Rules and Regulations as adopted and
promulgated by the Arkansas Energy Office, and
as from time to time hereafter may be amended,
is hereby adopted by reference pursuant to
A.C.A. § 14-55-206 and § 14-55-207.
G e%4 1 A w CD173:11
Residential. The 2009 International Energy
Conservation Code (IECC) is hereby adopted by
reference for all new residential structures With
the exception of §107 Fees and §109 Boardiof
Appeals.
(1) New residential construction. The 20,09
IECC is hereby amended by addinga
provision requiring a Home Energy Rating
System (HERS) Index rating for new
residential construction. The City of
Fayetteville requires that all new residential
construction have a Home Energy Rating
System (HERS) Index rating completed by
an independent RESNET certified home
energy rater, or equivalent, prior to the
issuance of a Certificate of Occupancy.
Residential developments that utilize the
exact same floor plan multiple times are
required to have a HERS Index rating
completed on a minimum of 20% of the
residential units.
(2)
(3)
(4)
(5)
Sticker. A sticker provided by the city shall
be posted in a very visible location near the
front entrance to the residential structure
indicating the estimated monthly utility cost
as derived from the HERS Index rating until
the structure is sold, or for at least 90 days,
whichever is less.
Additions, Alteration and renovations. All
additions, alterations and renovations to
existing residential structures shall comply
with the standards of the 2009 IECC, but
shall not be required to provide a HERS
Index rating or post a sticker. Where it is
shown to be impractical to meet the 2069
IECC, the Building Official may permit
additions to comply with the Arkansas
Energy Code, its Rules and Regulations as
adopted and promulgated by the Arkansas
Energy Office, and as from time to time
hereafter may be amended."
Repairs. All repairs to existing residential
structures and mechanical systems need
only be constructed to at least the same
energy conservation standard as the
damaged structure or mechanical system
which needed repair unless a higher
standard is required by the Arkansas Enercjy
Code.
Fees. §107 Fees of the IECC is removed to
reflect that only the City Council can set
required fees and any refund policy, the
"code official" cannot set fees nor a refund
policy. All fees shall be as prescribed in the
Unified Development Code.
PAA
�w a) 6�
Fayetteville Code of Ordinances
(6) Appeals. §109 Board of Appeals shall be
removed from the IECC and have no force or
application. Appeals of the Building Official's
interpretation of this International Energy
Conservation Code shall be heard by the
existing Board of Construction Appeals and
no new Board of Appeals for interpreting the
International Energy Conservation Code
shall be created by this Code.
5157, 8-5-08; Ord. 5512, 7-17-12)
Unsafe Buildings and Property
No person or persons, partnership, corporation or
association, hereinafter referred to as "owner",
shall keep or maintain any house or building
within the corporate limits of the city which has
become dilapidated, unsafe, unsanitary, or
detrimental to the public welfare.
Property nuisances. It is unlawful for any person
having charge or possession of any property to
maintain it in such a manner that it is determined
by the City, after a due process hearing, that a
property nuisance exists upon such property. A
property nuisance shall exist whenever any of the
following findings are made by the City Council
after a public, due process hearing:
(1) The condition of the property endangers the
life, health, property safety of welfare of the
public or occupants of the property.
(2) The condition of the property is so
dilapidated as to cause a diminution of the
enjoyment, use or property values of
neighboring properties.
(3) The condition of the property is detrimental
to the public health, safety and general
welfare.
(4) Unoccupied. Buildings or structures not
properly secured, locked, or closed.
(5) Unfinished. Buildings or structures which are
unfinished subject to the conditions of
§173,02 (B) (8).
(6) Inadequate sanitation, light or ventilation.
Occupied buildings or structures which lack
hot and cold running water to plumbing
fixtures or lack the minimum amounts of
natural light and ventilation as required by
this code.
(7) Structural hazards. Buildings or structures
which have such defective, deteriorated or
inadequate foundations; flooring and/or floor
CD173:12
support; wall, partition, or other vertical
support; ceiling, roof, or other horizontal
support; fireplace or chimney as to result in
unsafe conditions.
(8) Inadequate or hazardous wiring. All wiring
except that which conformed with all
applicable laws in effect at the time I of
installation and which has been maintained
in good condition and is being used in a safe
manner.
(9) Inadequate or faulty plumbing. All plumbing
except that which conformed with :all
applicable laws in effect at the time of
installation and which has been maintained
in good condition and which is free of cross
connections.
(10) Inadequate Means of Egress. All meansi of
egress and related components except that
which conformed with all applicable laws! in
effect at the time of installation and which
has been maintained in good condition.
(11)Inadequate Fire Suppression and Alarm
'systems. All fire suppression and alarm
systems except that which conformed wyth
all applicable laws in effect at the timelof
installation and which has been maintained
in good condition.
(12) Dilapiated Exterior. Dilapidated roof
coverings; dilapidated or unfinished exterior
wall coverings; broken or missing doors
and/or windows.
(C) Abatement procedures for Unsafe Buildings and
Property Nuisances; raze and removal and lien
authorized.
(1) City Prosecution Authorized. The rules and
procedures of the Code Compliance
Program for abatement of Unsafe Buildings
and Property Nuisances should be followed.
If the results of such efforts are
unsatisfactory, the Code Compliance
Division Director may forward the matter for
Prosecution to the City Prosecutor and/or to
the City Council for consideration of a raze
and removal Resolution.
(2) City Council determination whether properl',ty
nuisance exists. Upon referral from the
Code Compliance Division, the City Council
shall hold a public hearing to determine
whether or not the subject building is a
property nuisance for any of the reasons
specified in §173.09 (B) or otherwise unsafe,
dilapidated, unsanitary or a detriment to the
public welfare.
Arkansas Energy Code
for New Building Construction
Supplements and Amendments
2011
Arkansas Energy Office
Arkansas Economic Development Commission
RIVA :1:1V I.1411
This document supplements and amends the International Energy Conservation Code (IECC), 2003 Edition. In cases
where there are differences between these `Supplements and Amendments" and the IECC 2003 Edition, or with
ANSIMSHRAEAESNA Standard 90.1-2001 or Standard 90.1-2007 or Chapter 5 of the 2009 IECC, these `Supplements
and Amendments" shall take precedence.
Each of the following Chapters of this document associates directly with the corresponding chapters of the 2003
IECC unless otherwise noted.
RESIDENTIAL
• Chapter 1. Administration— Deleted. Replaced with the Arkansas Energy Code for New Building Construction
Supplements and Amendments, Chapter 1, Administration and Enforcement.
• Chapter 2: Definitions.
• Chapter 3: Design Conditions. Establishes the design criteria for the entire state of Arkansas and defines
Arkansas' four climate zones. The climate zones establish the design conditions for use with Chapters 4, 5, 6 and
8.
This chapter has been modified to include a map of Arkansas with a list of counties and their associated
climate zones, and a table identifying the Heating Degree Day (HDD) ranges associated with each zone.
• Chapter 4: Pertains to residential building design by systems analysis, as well as the use of renewable
resources such as wind, solar, geothermal, etc.
Section 402.2.3.1.3 has been deleted which required windows to have a 0.40 Solar Heat Gain Coefficient
(SHGC) in homes located in areas experiencing less than 3,500 HDD..
• Chapter 5: Residential compliance by designed components performance —this analyzes the total building for
compliance one component at a time. Assuming each individual component of the building meets the thermal
requirements of the code then the entire building is deemed to comply. This chapter offers the use of "trade-offs"
to achieve compliance by allowing the builder to substitute or "trade-off' values between building components. A
properly executed use of an Arkansas Energy Office approved compliance tool may be used to validate any trade-
off.
Section 502.1.5 has been deleted which required the 0.40 SHGC. The R-values in the Minimum Duct Insulation
Table 503.3.3.3 have been changed. Also footnote "b" under that same table has been deleted which stated that
insulation on return ducts located in a basement is not required. All references to the International Mechanical
Code have been changed to the Arkansas Mechanical Code.
• Chapter 6: Offers residential prescriptive compliance via the single step compliance method by selecting an
option directly from the charts in the applicable climate zone. The values from the option show the minimum
requirements for each component of a residential structure for the specific climate zone. An approved Arkansas
Energy Office prescripive compliance tool may be used to validate code compliance.
Section 602.2 has been deleted which required the 0.40 SHGC.
COMMERCIAL
• Chapter 7: Pertains to building design for commercial buildings, except those that comply with Chapter 8.
ANSEASHRAEIESNA Standard 90.12001 is adopted by reference and will be in effect until 12/31/2012. On and
after 1/l/2013 ANSI/ASHRARAESNA Standard 90.12007 will be in effect. An approved Arkansas Energy Office
compliance tool may be used to validate compliance.
• Chapter 8: Chapter 8 of the 2003 IECC is in effect until 12/31/2012. On and after 1/1/2013 Chapter 8 is
removed in its entirity and replaced with Chapter 5 of the 2009 International Energy Conservation Code (2009
IECC) with its associated definitions, general requirements and referenced standards. All references to the
International Mechanical Code have been changed to the Arkansas Mechanical Code. An approved Arkansas
Energy Office compliance tool may be used to validate compliance.
s The word "component" for the purposes of this code is defined as being a particular segment of a building such as a
wall, ceiling, or floor. Hence, the terms wall component or ceiling component.
Introduction
The Arkansas General Assembly authorized the Arkansas Energy Office to promulgate these regulations in Section
3(B)(2)(c) of Act 7 of 1981. These rules and regulations are in adherence with the Administrative Procedures Act.
For residential structures, Arkansas adopts the International Energy Conservation Code (IECC), 2003 Edition,
published and copyrighted by the International Codes Council. The residential portion of the Arkansas Energy Code
for New Building Construction is composed of the 2003 Edition of the International Energy Conservation Code
(2003 IECC) combined with these Supplements and Amendments.
Chapters 2 through 6 of the 2003 IECC provide regulations for residential construction. To order copies of the
International Energy Conservation Code, 2003 Edition contact:
International Code Council
900 Montclair Road
Birmingham, Alabama 35213-1206
Phone: 1-800-786-4452, Fax: 205-591-0775
Copyright (D 1996-1998 Southern Building Code Congress International, Inc. All rights reserved.
For commercial structures, the Arkansas Energy Code for New Building Construction adopts by reference the
American Society of Heating, Refrigerating, and Air Conditioning.Engineers (ASHRAE) ANSI /ASHRAE /IESNA
Standard 90.1-2007 Energy Standard far Buildings Except Low -Rise Residential Buildings which will be in effect
until 12/31/2012. On and after 1/1/2013 Arkansas will adopt by reference ANSI 1 ASHRAE /IESNA Standard 90.1-
2007 , and as an alternative, Chapter 5 of the 2009 International Energy Conservation Code with its associated
definitions, general requirements and referenced standards. Both codes are available from the International Code
Council at the above address.
To order copies of American Society of Heating, Refrigerating, and Air -Conditioning Engineers
ANSI/ASHRAE/IESNA Standard 90.1-2001 or 2007 contact:
American Society of Heating, Refrigeration and Air -Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329
Phone: 404-636-8400, Fax: 404-321-5478
Web: www.asbrae.org
Questions, inquiries or request for copies of the Arkansas Energy Code for New Building Construction Supplements
and Amendments may be addressed to:
Arkansas Energy Office
Attn: Arkansas Energy Code for New Building Construction
900 West Capitol
Little Rock, AR 72201
Phone: 800-558-2633 or 501-682-6103, Fax: 501-682-7499
Email: EnerRyInfo(@,ArkansasEDC.com
Download code information and compliance tools at: www.ArkansasEnerev.or¢. Click on the Residential
tab on top, then Builders and Energy Code on the left side.
SUMMARY
Chapters 4, 5 and 6 of the 2003 IECC offer different methods to achieve code compliance for low-
rise residential construction. For commercial and high-rise residential construction Chapters 7 and
8 offer different methods to achieve code compliance for commercial and high-rise residential
construction and refer to ASHRAE 90.1-2001 which is in effect until 12/31/2012. On and after
1/1/2013 ASHRAE 90.1-2007 becomes effective for commercial and high-rise residential
construction and Chapter 8 of the 2003 IECC is removed and replaced with Chapter 5 of the 2009
IECC.
These amendments have five significant changes:
1) Chapter 1 — Administration was deleted and replaced with the Arkansas Energy Code for
New Building Construction Supplements and Amendments, Chapter 1, Administration and
Enforcement.
2) The requirement of a 0.4 Solar Heat Gain Coefficient in Chapters 4, 5 and 6 was deleted.
3) The residential duct insulation requirement was changed.
4) ANSIIASHRARIESNA 90.1-2001 is referenced for commercial buildings and high-rise
residential buildings in Chapters 7 and 8 until 12/31/2012. On and after 1/1/2013
ANSI/ASHRAE/IESNA 90.1-2007 is referenced for commercial buildings and high-rise
residential buildings.
5) On and after 1/l/2013 Chapter 8 of the 2003 IECC is deleted and replaced with Chapter 5 of
the 2009 IECC.
ARKANSAS ENERGY CODE FOR NEW
BUILDING CONSTRICTION SUPPLEMENTS
AND AMENDMENTS
CONTENTS
INTRODUCTION............................................................................ 3
OVERVIEW.................................................................................. 4
SUMMARY.................................................................................. 5
ARKANSAS AMENDMENTS
Chapter 1—Administration and Enforcement ...................................... 5
Chapter 2—Definitions................................................................ 13
Chapter 3—Design Conditions........................................................ 13
Arkansas Climate Zones for Residential Construction. Applies to Commercial
Construction up to 12/31/2012.................................................. 14
Chapter 4—Residential Building Design by Systems Analysis and Design of Buildings
Utilizing Renewable Energy Sources ............................................ 15
Chapter 5—Residential Building Design by Component Performance
Approach............................................................................. 15
Chapter 6—Simplified Prescriptive Requirements for Detached One- and Two -Family
Dwellings and Group R-2, R-4 or Townhouse Residential
Buildings.............................................................................. 16
Chapter 7—Building Design for All Commercial Buildings... .................... 16
Chapter 8—Design by Acceptable Practice for Commercial Buildings ......... 17
Arkansas Commercial Climate Zones in effect on and after 1/1/2013 ....... 17
Chapter 10—Referenced Standards .................................................. 18
PREFACE
Introduction
Internationally, code officials recognize the need for a modern, up-to-date energy conservation code addressing the design of
energy -efficient building envelopes and installation of energy efficient mechanical, lighting and power systems through require-
ments emphasizing performance. The International Energy Conservation Code®, in this 2009 edition, is designed to meet these
needs through model code regulations that will result in the optimal utilization of fossil fuel and nondepletable resources in all com-
munities, large and small.
This comprehensive energy conservation code establishes minimum regulations for energy efficient buildings using prescriptive
and performance -related provisions. It is founded on broad -based principles that make possible the use of new materials and new
energy efficient designs. This 2009 edition is fully compatible with all the International Codes® (I -Codes®) published by the Inter-
national Code Council (ICC)®, including: the International Building Code®, International Existing Building Code' , International
Fire Code®, International Fuel Gas Code®, International Mechanical Code' , ICC Performance Code®, International Plumbing
Code®, International Private Sewage Disposal Code®, International Property Maintenance Code' , International Residential
Code®, International WiIdland-Urban Interface Code'*' and International Zoning Codel .
The International Energy Conservation Code provisions provide many benefits, among which is the model code development
process that offers an international forum for energy professionals to discuss performance and prescriptive code requirements. This
forum provides an excellent arena to debate proposed revisions. This model code also encourages international consistency in the
application of provisions.
Development
The first edition of the International Energy Conservation Code (1998) was based on the 1995 edition of the Model Energy Code
promulgated by the Council of American Building Officials (CABO) and included changes approved through the CABO Code
Development Procedures through 1997. CABO assigned all rights and responsibilities to the International Code Council and its
three statutory members at that time, including Building Officials and Code Administrators International, Inc. (BOCA), Intema-
tional Conference of Building Officials (ICBO) and Southern Building Code Congress International (SBCCI). This 2009 edition
presents the code as originally issued, with changes reflected in the 2000, 2003 and 2006 editions and further changes approved
through the ICC Code Development Process through 2008. A new edition such as this is promulgated every three years.
This code is founded on principles intended to establish provisions consistent with the scope of an energy conservation code that
adequately conserves energy; provisions that do not unnecessarily increase construction costs; provisions that do not restrict the use
of new materials, products or methods of construction; and provisions that do not give preferential treatment to particular types or
classes of materials, products or methods of construction.
Adoption
The International Energy Conservation Code is available for adoption and use by jurisdictions internationally. Its use within a gov-
ernmental jurisdiction is intended to be accomplished through adoption by reference in accordance with proceedings establishing
the jurisdiction's laws. At the time of adoption, jurisdictions should insert the appropriate information in provisions requiring spe-
cific local information, such as the name of the adopting jurisdiction. These locations are shown in bracketed words in small capital
letters in the code and in the sample ordinance. The sample adoption ordinance on page vii addresses several key elements of a code
adoption ordinance, including the information required for insertion into the code text.
Maintenance
The International Energy Conservation Code is kept up to date through the review of proposed changes submitted by code enforc-
ing officials, industry representatives, design professionals and other interested parties. Proposed changes are carefully considered
through an open code development process in which all interested and affected parties may participate.
The contents of this work are subject to change both through the Code Development Cycles and the governmental body that
enacts the code into law. For more information regarding the code development process, contact the Code and Standard Develop-
ment Department of the International Code Council
While the development procedure of the International Energy Conservation Code assures the highest degree of care, ICC, its
members and those participating in the development of this code do not accept any liability resulting from compliance or noncom-
phance with the provisions because ICC and its members do not have the power or authority to police or enforce compliance with
the contents of this code. Only the governmental body that enacts the code into law has such authority.
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
Marginal Markings
Solid vertical lines in the margins within the body of the code indicate a technical change from the requirements of the 2006 edition.
Deletion indicators in the form of an arrow (�) are provided in the margin where an entire section, paragraph, exception or table has
been deleted or an item in a list of items or a table has been deleted.
Italicized Terms
Selected terms set forth in Chapter 2, Definitions, are italicized where they appear in code text. Such terms are not italicized where
the definition set forth in Chapter 2 does not impart the intended meaning in the use of the term. The terms selected have definitions
which the user should read carefully to facilitate better understanding of the code.
1V 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
Effective Use of the International Energy Conservation Code
The International Energy Conservation Code (IECC) is a model code that regulates minimum energy conservation requirements
for new buildings. The IECC addresses energy conservation requirements for all aspects of energy uses in both commercial and resi-
dential construction, including heating and ventilating, lighting, water heating, and power usage for appliances and building sys-
tems.
The IECC is a design document. For example, before one constructs a building, the designer must determine the minimum insula-
tion R-values and fenestration U-factors for the building exterior envelope. Depending on whether the building is for residential use
or for commercial use, the IECC sets forth minimum requirements for exterior envelope insulation, window and door U-factors and
SHGC ratings, duct insulation, lighting and power efficiency, and water distribution insulation.
Arrangement and Format of the 2009 IECC
Before applying the requirements of the IECC it is beneficial to understand its arrangement and format. The IECC, like other codes
published by ICC, is arranged and organized to follow sequential steps that generally occur during a plan review or inspection. The
IECC is divided into five different parts:
Chaptev
Subjects
1-2
Administration and definitions
- 3
Climate zones and general materials requirements
4
Energy efficiency for residential buildings
5
Energy efficiency for commercial buildings
6
Referenced standards
The following is a chapter -by -chapter synopsis of the scope and intent of the provisions of the International Energy Conservation
Code:
Chapter 1 Administration. This chapter contains provisions for the application, enforcement and administration of subsequent
requirements of the code. In addition to establishing the scope of the code, Chapter 1 identifies which buildings and structures come
under its purview. Chapter 1 is largely concerned with maintaining "due process of law" in enforcing the energy conservation crite-
ria contained in the body of the code. Only through careful observation of the administrative provisions can the building official rea-
sonably expect to demonstrate that "equal protection under the law" has been provided.
Chapter 2 Definitions. All terms that are defined in the code are listed alphabetically in Chapter 2. While a defined term may be
used in one chapter or another, the meaning provided in Chapter 2 is applicable throughout the code.
Additional definitions regarding climate zones are found in Tables 301.3(1) and (2). These are not listed in Chapter 2.
Where understanding of a term's definition is especially key to or necessary for understanding of a particular code provision, the
term is show in italics wherever it appears in the code. This is true only for those terms that have a meaning that is unique to the code.
In other words, the generally understood meaning of a term or phrase might not be sufficient or consistent with the meaning pre-
scribed by the code; therefore, it is essential that the code -defined meaning he known.
Guidance regarding tense, gender and plurality of defined terms as well as guidance regarding terms not defined in this code is
provided.
Chapter 3 Climate Zones. Chapter3 specifies the climate zones that will serve to establish the exterior design conditions. In addi-
tion, Chapter 3 provides interior design conditions that are used as a basis for assumptions in heating and cooling load calculations,
and provides basic material requirements for insulation materials and fenestration materials.
Climate has a major impact on the energy use of most buildings. The code establishes many requirements such as wall and roof
insulation R-values, window and door thermal transmittance requirement (U-factors) as well as provisions that affect the mechani-
cal systems based upon the climate where the building is located. This chapter will contain the information that will be used to prop-
erly assign the building location into the correct climate zone and will then be used as the basis for establishing requirements or
elimination of requirements.
Chapter 4 Residential Energy Efficiency. Chapter 4 contains the energy -efficiency -related requirements for the design and con-
struction of residential buildings regulated under this code. It should be noted that the definition of a residential building in this code
is unique for this code. In this code, a residential building is an R-2, R-3 or R-4 building three stories or less in height. All other R-1
buildings, including residential buildings greater than three stories in height, are regulated by the energy conservation requirements
of Chapter 5. The applicable portions of a residential building must comply with the provisions within this chapter for energy effi-
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
ciency. This chapter defines requirements for the portions of the building and building systems that impact energy use in new resi-
dential construction and promotes the effective use of energy. The provisions within the chapter promote energy efficiency in the
building envelope, the heating and cooling system and the service water heating system of the building.
Chapter 5 Commercial Energy Efficiency. Chapter 5 contains the energy -efficiency -related requirements for the design and con-
struction of most types of commercial buildings and residential buildings greater than three stories in height above grade. Residen-
tial buildings, townhouses and garden apartments three stories or less in height are covered in Chapter4. Like Chapter4, this chapter
defines requirements for the portions of the building and building systems that impact energy use in new commercial construction
and new residential construction greater than three stories in height, and promotes the effective use of energy. The provisions within
the chapter promote energy efficiency in the building envelope, the heating and cooling system and the service water heating system
of the building.
Chapter 6 Referenced Standards. The code contains numerous references to standards that are used to regulate materials and
methods of construction. Chapter 6 contains a comprehensive list of all standards that are referenced in the code. The standards are
part of the code to the extent of the reference to the standard. Compliance with the referenced standard is necessary for compliance
with this code. By providing specifically adopted standards, the construction and installation requirements necessary for compli-
ance with the code can be readily determined. The basis for code compliance is, therefore, established and available on an equal
basis to the code official, contractor, designer and owner.
Chapter 6 is organized in a manner that makes it easy to locate specific standards. It lists all of the referenced standards, alphabeti-
cally, by acronym of the promulgating agency of the standard. Each agency's standards are then listed in either alphabetical or
numeric order based upon the standard identification. The list also contains the title of the standard; the edition (date) of the standard
referenced; any addenda included as part of the ICC adoption; and the section or sections of this code that reference the standard.
vi 2009 INTERNATIONAL ENERGY CONSERVATION COOS®
TABLE OF CONTENTS
CHAPTER 1 ADMINISTRATION ............... 1
PART 1—SCOPE AND APPLICATION ............ 1
Section
101 Scope and General Requirements ............. 1
102 Alternate Materials —Method of
Construction, Design or Insulating
Systems................................2
PART 2—ADMINISTRATION AND
ENFORCEMENT ...................... 2
103
Construction Documents....................2
104
Inspections ........................
:...... 3
105
Validity..................................3
106
Referenced Standards ......................3
107
Fees.....................................3
108
Stop Work Order ..........................3
109
Board of Appeals ........................1..4
CHAPTER 2 DEFINITIONS .................... 5
Section
201 General..................................5
202 General Definitions ........................ 5
CHAPTER 3 GENERAL REQUIREMENTS
...... 9
Section
301
Climate Zones .............................9
A2
Design Conditions ........................25
303
Materials, Systems and Equipment...........
25
CHAPTER 4 RESIDENTIAL ENERGY
EFFICIENCY ....................
27
Section
401
General.................................27
402
Building Thermal Envelope .................
27
403
Systems.................................30
404
Electrical Power and Lighting Systems .......
32
405
Simulated Performance Alternative ..........
32
CHAPTER 5 COMMERCIAL ENERGY
EFFICIENCY .................... 37
Section
501
General.................................37
502
Building Envelope Requirements ............
37
503
Building Mechanical Systems ...............
42
504
Service Water Heating ......................
55
505
Electrical Power and Lighting Systems .......
57
506
Total Building Performance ................
60
CHAPTER 6 REFERENCED STANDARDS ...... 69
INDEX........................................73
2009 INTERNATIONAL ENERGY CONSERVATION CODE® Ix
ARKANSAS AMENDMENTS
* Revise the Arkansas Energy Code for New Building Construction Supplements and Amendments
(the 2003 Edition of the International Energy Conservation Code), as follows:
CHAPTER1
ADMINISTRATION
Delete entire CHAPTER I ADMIDIISTRATION. Replace with the Arkansas Energy Code for
New Building Construction Supplements and Amendments, CHAPTER 1, ADMINISTRATION
AND ENFORCEMENT as follows.
CHAPTER1
ADMINISTRATION and ENFORCEMENT
SECTION 101
GENERAL
101.1 Title. These regulations shall be known as the Arkansas Energy Code for New Building Construction
Supplements and Amendments, and shall be cited as such. Unless otherwise specified, this Arkansas Energy Code
for New Building Construction Supplements and Amendments, the 2003 International Energy Conservation Code,
ASHRAE 90.1-2001, ASHRAE 90.1-2007 and Chapter 5 of the 2009 IECC are referred to herein as "this Code" or
"the Arkansas Energy Code."
Arkansas Energy Code for New Building Construction Supplements and Amendments
101.2 Scope. This Code establishes minimum prescriptive and performance -related regulations for the design of
energy -efficient buildings and structures or portions thereof that provide facilities or shelter for public assembly, /
educational, business, mercantile, institutional, storage and residential occupancies, as well as those portions of 1
factory and industrial occupancies designed primarily for human occupancy. This Code thereby addresses the design
of energy -efficient building envelopes and the selection and installation of energy -efficient mechanical, service
water -heating, electrical distribution and illumination systems and equipment for the effective use of energy in these
buildings and structures.. NOTE: All referenced Chapters, Sections and Tables in this Chapter correspond directly
to the International Energy Conservation Code, 2003 Edition unless otherwise noted.
101.2.1 Exempt buildings. Buildings and structures indicated in Sections 101.2.1.1 through 101.2.1.5 shall be
exempt from the building envelope provisions of this Code, but shall comply with the provisions for building,
mechanical, service water heating and lighting systems.
101.2.1.1 Separated buildings. Buildings and structures, or portions thereof separated by building
envelope assemblies from the remainder of the building, that have a peak design rate of energy usage less
than 3.4 Btulh per square foot (10.7 W/m2) or 1.0 watt per square foot (10.7 W/m2) of floor area for space
conditioning purposes.
101.2.1.2 Unconditioned buildings. Buildings and structures or portions thereof, which are neither heated
nor cooled.
101.2.1.3: Buildings and structures or portions thereof that are exclusively heated or cooled by renewable
fuels.
101.2.1.4: Mobile homes
101.2.1.5: Temporary use structures such as hunting and fishing camps, boat houses, remote cabins, etc.
that do not. meet the definition of "dwelling units" in Section 202; General Definitions.
101.2.2 Applicability. The provisions of this Code shall apply to all matters affecting or relating to structures
and premises, as set forth in Section 101. Where, in a specific case, different sections of this Code specify
different materials, methods of construction or other requirements, the most restrictive shall govern.
101.2.2.1 Existing installations. Except as otherwise provided for in this chapter, a provision in this Code
shall not require the removal, alteration or abandonment of, nor prevent the continued utilization and
maintenance of, an existing building envelope, mechanical, service water -heating, electrical distribution or
illumination system lawfully in existence at the time of the adoption of this Code.
101.2.2.2 Additions to Existing Buildings: Additions to existing buildings or structures may be made to
such buildings or structures without making the entire building or structure comply. The new addition shall
conform to the provisions of this Code as they relate to new construction only.
101.2.2.3 Renovations: Any rehabilitation of an existing building that requires more than 25 percent of the
gross floor area or volume of the entire building to be rebuilt shall comply with this Code. Cosmetic work
such as painting, wall covering, wall paneling, and floor covering shall not be included.
101.2.2.4 Historic buildings. The provisions of this Code relating to the construction, alteration, repair,
enlargement, restoration, relocation or movement of buildings or structures shall not be mandatory for
existing buildings or structures specifically identified and classified as historically significant by the state
or local jurisdiction, listed in The National Register ojHistoric Places or which have been determined to be
eligible for such listing.
101.2.3 Mixed occupancy. When a building houses more than one occupancy, each portion of the building
shall conform to the requirements for the occupancy housed therein. Where minor accessory uses do not occupy
more than 10 percent of the area of any floor of a building, the major use shall be considered the building
occupancy. Buildings, other than detached one- and two-family dwellings and townhouses, with a height of four
or more stories above grade shall be considered commercial buildings for purposes of this Code, regardless of
the number of floors that are classified as residential occupancy.
Arkansas Energy Code for New Building Construction Supplements and Amendments
101.3 intent. The provisions of this Code shall regulate the design of building envelopes for adequate thermal
resistance and low air leakage and the design and selection of mechanical, electrical, service water -heating and
illumination systems and equipment which will enable effective use of energy in new building construction. It is
intended that these provisions provide flexibility to permit the use of innovative approaches and techniques to
achieve effective utilization of energy. This Code is not intended to abridge safety, health or environmental
requirements under other applicable codes or ordinances.
101.4 Compliance. Compliance with this Code shall be determined in accordance with Sections 101.4.1 and
101.4.2.
101.4.1 Residential buildings. For residential buildings the following shall be used as the basis for compliance
assessment: a systems approach for the entire building (Chapter 4), an approach based on performance of
individual components of the building envelope (Chapter 5), an approach based on performance of the total
building envelope (Chapter 5), an approach based on acceptable practice for each envelope component (Chapter
5), an approach by prescriptive specification for individual components of the building envelope (Chapter 5), or
an approach based on simplified, prescriptive specification (Chapter 6) where the conditions set forth in Section
101.4.1A or 101.4.1.2 are satisfied.
101.4.1.1 Detached one- and two-family dwellings. When the glazing area does not exceed 15 percent of
the gross area of exterior walls.
101.4.1.2 Residential buildings, Group R-2, R-4'or townhouses. When the glazing area does not exceed
25 percent of the gross area of exterior walls.
101.4.2 Commercial buildings. For commercial buildings, a prescriptive or performance -based approach
(Chapter 7) or as specified by acceptable practice (Chapter 8) shall be used as the basis for compliance
assessment up to 12/31/2012. On and after 1/1/2013 ANSUASHRAE/IESNA 90.1-2007 or Chapter 5 of the
20091ECC shall be used as a basis for compliance assessment.
101.4.3 Builder Acknowledgement. Cities or counties that issue building permits for new building
construction are required to record that the builder has certified that the proposed building will comply with the
Arkansas Energy Code.
101.5 Adoption. Arkansas Code § 15-10-205(b)(3)(B) requires that any city or county in Arkansas which issues
building permits for new building construction (referred to herein as "applicable cities or counties") shall adopt the
Arkansas Energy Code as amended.
101.5.1 Date of Adoption. Applicable cities or counties shall adopt the Arkansas Energy Code prior to
December 31, 2012.
101.5.2 Acknowledgement of Adoption. Upon adoption of the Arkansas Energy Code, applicable cities or
counties are required to submit a copy of the adoption ordinance to the Arkansas Energy Office. If the
applicable city or county has not adopted the Arkansas Energy Code by December 31, 2012, the mayor and/or
county judge is required to submit a letter to the Arkansas Energy Office, no later than 60 days after this
deadline, describing why the city or county is not in compliance with Arkansas Code § 15-10-205(b)(3)(B).
SECTION 102
MATERIALS, SYSTEMS AND EQUIPMENT
102.1 General. Materials, equipment and systems shall be identified in a manner that will allow a determination of
their compliance with the applicable provisions of this Code.
102.2 Materials, equipment and systems installation. All insulation materials, caulking and weatherstripping,
fenestration assemblies, mechanical equipment and systems components, and water -heating equipment and system
components shall be installed in accordance with the manufacturer's installation instructions.
102.3 Maintenance information. Required regular maintenance actions shall be clearly stated and incorporated on
a readily accessible label. Such label shall include the title or publication number, the operation and maintenance
Arkansas Energy Code for New Building Constmction Supplements and Amendments
manual for that particular model and type of product. Maintenance instructions shall be furnished for equipment that
requires preventive maintenance for efficient operation.
102.4 Insulation installation. Roof/ceiling, floor, wall cavity and duct distribution systems insulation shall be
installed in a manner that permits inspection of the manufacturer's R-value identification mark.
102.4.1 Protection of exposed foundation insulation. Insulation applied to the exterior of foundation walls
and around the perimeter of slab -on -grade floors shall have a rigid, opaque and weather -resistant protective
covering to prevent the degradation of the insulation's thermal performance. The protective covering shall cover
the exposed area of the exterior insulation and extend a minimum of 6 inches (153 mm) below grade.
102.5Identification. Materials, equipment and systems shall be identified in accordance with Sections 102.5.1,
102.5.2 and 102.5.3.
102.5.1 Building envelope insulation. A thermal resistance (R) identification mark shall be applied by the
manufacturer to each piece of building envelope insulation 12 inches (305 mm) or greater in width..
Alternatively, the insulation installer shall provide a signed and dated certification for the insulation installed in
each element of the building envelope, listing the type of insulation installations in roof/ceilings, the
manufacturer and the R--value. For blown -in or sprayed insulation, the installer shall also provide the initial
installed thickness, the settled thickness, the coverage area and the number of bags installed. Where blown -in or
sprayed insulation is installed in walls, floors and cathedral ceilings, the installer shall provide a certification of
the installed density and R-value. The installer shall post the certification in a conspicuous place on the job site.
102.5.1.1 Roof/ceiling insulation. The thickness of roof/ceiling insulation that is either blown in or
sprayed shall be identified by thickness markers that are labeled in inches or millimeters installed at least
one for every 300 square feet (28 m2) throughout the attic space. The markers shall be affixed to the trusses
or joists and marked with the minimum initial installed thickness and minimum settled thickness with
numbers a minimum of 1 inch (25 mm) in height. Each marker shall face the attic access. The thickness of
installed insulation shall meet or exceed the minimum initial installed thickness shown by the marker.
102.5.2 Fenestration product rating, certification and labeling. U-factors of fenestration products (windows,
doors and skylights) shall be determined in accordance with NFRC 100 by an accredited, independent
laboratory, and labeled and certified by the manufacturer. The solar heat gain coefficient (SHGC) of glazed
fenestration products (windows, glazed doors and skylights) shall be determined in accordance with NFRC 200
by an accredited, independent laboratory, and labeled and certified by the manufacturer. Where a shading
coefficient for a fenestration product is used, it shall be determined by converting the product's SHGC, as
determined in accordance with NFRC 200, to a shading coefficient, by dividing the SHGC by 0.87. Such
certified and labeled U-factors and SHGCs shall be accepted for purposes of determining compliance with the
building envelope requirements of this Code.
When a manufacturer has not determined product U-factor in accordance with NFRC 100 for a particular
product line, compliance with the building envelope requirements of this Code shall be determined by assigning
such products a default U-factor in accordance with Tables 102.5.2(1) and.102.5.2(2). When a SHGC or
shading coefficient is used for code compliance and a manufacturer has not determined product SHGC in
accordance with NFRC 200 for a particular product line, compliance with the building envelope requirements of
this Code shall be determined by assigning such products a default SHGC in accordance with Table 102.5.2(3).
Product features must be verifiable for the product to qualify for the default value associated with those
features. Where the existence of a particular feature cannot be determined with reasonable certainty, the product
shall not receive credit for that feature. Where a composite of materials from two different product types is
used, the product shall be assigned the higher U-factor.
102.5.3 Duct distribution systems insulation. A thermal resistance (R) identification mark shall be applied by
the manufacturer in maximum intervals of no greater than 10 feet (3048 mm) to insulated flexible duct products
showing the thermal performance R-value for the duct insulation itself (excluding air films, vapor retarders or
other duct components).
Arkansas Energy Code for New Building Construction Supplements and Amendments
TABLE 102.5.2(1)
U-FACTOR DEFAULT TABLE FOR WINDOWS, GLAZED DOORS AND SKYLIGHTS
FRAME MATERIAL AND PRODUCT TYPEe
SINGLE
DOUBLE
GLAZED
GLAZED
Metal without thermal break:
Curtin wall
1.22
0.79
Fixed
1.13
0.69
Garden window
2.60
1.81
Operable (including sliding and swinging glass doors)
1.27
0.87
Site -assembled sloped/overhead glazing
1.36
0.82
Skylight
1.98
1.31
Metal with thermal break:
Curtain wall
1.11
0.68
Fixed
1.07
0.63
Operable (including sliding and swinging glass doors)
1.08
0.65
Site -assembled sloped/overhead glazing
1.25
0.70
Skylight
1.89
1.11
Reinforced vinyl/metal clad wood:
Fixed
0.98
0.56
. Operable (including sliding and swinging glass doors)
0.90
0.57
Skylight
1.75
1.05
Wood/vinyl/fiberglass:
Fixed
0.98
0.56
Garden window
2.31
1.61
Operable (including sliding and swinging glass doors)
0.89
0.55
Skylight
1.47
0.84
a. Glass block assemblies with mortar but without reinforcing or framing shall have a U-factor of 0.60.
TABLE 102.5.2(2)
U-FACTOR DEFAULT TABLE FOR NONGLAZED DOORS
WITH
WITHOUT
DOOR TYPE
FOAM
FOAM
CORE
CORE
Steel doors (1.75 inches thick)
0.35
-0.60
WITH
WITHOUT
STORM
STORM
DOOR
DOOR
Wood doors (1.75 inches thick)
Hollow core flush
0.32
0.46
Panel with 0.438-inch panels
0.36
0.54
Panel with 1.125-inch panels
0.28
0.39
Solid core flush
0.26
0.40
For SI: I inch = 25.4 nun.
Arkansas Energy Code for New Building Construction Supplements and Amendments 9
TABLE 102.5.2(3)
SHGC DEFAULT TABLE FOR FENESTRATION
SINGLE GLAZED
DOUBLE GLAZED
PRODUCT
Clear
Bronze
Green
Gray
DESCRIPTION
+
+
+
+
Clear
Bronze
Green
Gray
Clear
Clear
Clear
Clear
Metal frames
Fixed
0.78
0.67
0.65
0.64
0.68
0.57
0.55
0.54
Operable
0.75
0.64
0.62
0.61
0.66
0.55
0.53
0.52
Nonmetal frames
Fixed
0.75
0.64
0.62
0.61
0.66
0.54
0.53
0.52
O erable
0.63
0.54
0.53
0.52
0.55
0.46
0.45
0.44
SECTION 103
ALTERNATE MATERIALS -METHOD OF CONSTRUCTION,
DESIGN OR INSULATING SYSTEMS
103.1 General. The provisions of this Code are not intended to prevent the use of any material, method of
construction, design or insulating system not specifically prescribed herein, provided that such construction, design
or insulating system has been approved by the code official as meeting the intent of the Code.
Compliance with specific provisions of this Code may be determined through the use of deemed to comply
computer software, worksheets, compliance manuals and other similar materials when they have been approved by
the Arkansas Energy Office.
SECTION 104
CONSTRUCTION DOCUMENTS
104.1 General. Construction documents and other supporting data shall be submitted in one or more sets with each
application for a permit The construction documents and designs submitted under the provisions of Chapter 4 shall
be prepared by a registered design professional where required by the statutes of the jurisdiction in which the project
is to be constructed. Where special conditions exist, the code official is authorized to require additional construction
documents to be prepared by a registered design professional.
Exceptions:
1. The code official is authorized to waive the submission of construction documents and other supporting data
not required to be prepared by a registered design professional if it is found that the nature of the work applied
for is such that reviewing of construction documents is not necessary to obtain compliance with this Code.
2. For residential buildings having a conditioned floor area of 5,000 square feet (465 in) or less, designs
submitted under the provisions of Chapter 4 shall be prepared by anyone having qualifications acceptable to the
code official.
104.2 Information on construction documents. Construction documents shall be drawn to scale upon suitable
material. Electronic media documents are permitted to be submitted when approved by the code official.
Construction documents shall be of sufficient clarity to indicate the location, nature and extent of the work proposed
and show in sufficient detail pertinent data and features of the building and the equipment and systems as herein
governed, including, but not limited to, design criteria, exterior envelope component materials, U-factors of the
envelope systems, U-factors of fenestration products, R-values of insulating materials, size and type of apparatus
and equipment, equipment and systems controls and other pertinent data to indicate compliance with the
requirements of this Code and relevant laws, ordinances, rules and regulations, as determined by the code official.
Arkansas Energy Code for New Building Construction Supplements and Amendments 10
104.3 Design Professional: Architects and engineers employed to prepare plans and specifications for new
buildings shall ensure the plans and specifications comply with the provisions of this Code in a manner consistent
with their obligations under Arkansas State law (see also the Arkansas Fire Prevention Code 2007 Edition, Volume
I Fire, Volume lI Building and Volume III Residential).
SECTION 105
CONTRACTOR / BUILDER COMPLIANCE
105.1 General: Compliance with this Code shall be the obligation of the licensed builder or contractor.
105.1.1 Compliance: Compliance signifies that the licensed builder or contractor has constructed or will
construct or renovate the building in compliance with the requirements of this Code, and that by inspection
within a two-year period from the date of completion, if the building fails to meet the Code's specifications,
understands that he or she is responsible for bringing the building into compliance with this Code.
105.1.2 Compliance Materials: Compliance materials, instructions and Arkansas Energy Office approved
tools and third -party services, are made a part of this Code by reference.
105.1.3 Compliance by Self -Builders: Compliance with this Code by builders who build, or contract to build,
single-family buildings for their own occupancy is voluntary.
105.2 Compliance Alternatives
105.2.1 Alternative Compliance Tools: Arkansas Energy Office approved alternative compliance tools may be
used to validate code compliance.
105.2.2 Federally Financed Homes: Newly constructed single and multi -family buildings financed through
HUD/FHA, VA, and USDA Rural Development programs shall meet the thermal performance requirements of
this Code.
SECTION 106
INSPECTIONS
106.1 General. Construction or work that must comply with this Code shall be subject to inspection by the Arkansas
Energy Office or its agent, or by the code official.
106.2 Final inspection. Code officials within a county or municipality who have adopted this Code and conduct
final inspections as a part of their normal operations shall perform a final inspection and approval for buildings
when completed and ready for occupancy.
106.3 Reinspection. The Arkansas Energy'Office or its agent or code official may cause a structure to be
reinspected.
SECTION 107
ENFORCEMENT
107.1 General: Enforcement of this Code shall be the responsibility of the Arkansas Energy Office or local
government (when adopted).
107.2 Local Government: All counties, cities ormunicipalities that issue building permits for new building
construction are required to adopt this Code for new construction, additions and renovation of existing structures.
However, the local municipality shall not in any way modify the energy conservation standards in this Code or
promulgate or adopt rules or regulations that are less stringent than this Code.
Arkansas Energy Code for New Building Construction Supplements and Amendments 11
A local government may exercise other administrative and enforcement procedures that it deems necessary to affect
the purposes of this Code, including, but not limited to, prior plan approval, building permit requirements, and
inspections during the course of construction.
SECTION 108
APPEALS
108.1 Board of Appeals: Any appeal of the energy conservation standards contained in this Code shall be made to
the Board of Appeals established by the Arkansas Energy Office, and a decision on an appeal will be made within
45 days of its filing.
108.2 Local Government: In any county or municipality where this Code is adopted, the governing body shall
establish a Board of Appeals to adjudicate complaints arising from the application of the Code. When a Board of
Appeals is established, the governing body shall prescribe procedures for providing a fair and reasonable hearing of
the appeal.
SECTION 109
VALIDITY
109.1 General. If a section, subsection, sentence, clause or phrase of this Code is, for any reason, held to be
unconstitutional, such decision shall not affect the validity of the remaining portions of this Code.
SECTION 116
RESPONSIBILITY
110.1 These minimum standards shall not be construed as relieving the licensed builder or contractor of his or her
responsibility for compliance with local ordinances, codes, and regulations.
SECTION 111
REFERENCED STANDARDS
111.1 General. The standards, and portions thereof, which are referred to in this Code and listed in Chapter 10, shall
be considered part of the requirements of this Code to the extent of such reference.
111.2 Conflicting requirements. When a section of this Code and a section of a referenced standard from Chapter
10 specify different materials, methods of construction or other requirements, the provisions of this Code shall
apply.
SECTION 112
EFFECTIVE DATE
112.1 The effective date of this Code for residential buildings, as defined herein, is 10/1/2004. ASHRAE 90.1-2001
and Chapter 8 of the 2003 IECC are in effect for commercial buildings until 12/31/2012. The effective date for
ASHRAE 90.1-2007 and Chapter 5 of the 2009 IECC for commercial buildings, as defined herein, is I/1/2013.
Arkansas Energy Code for New Building Construction Supplements and Amendments 12
CHAPTER 2
DEFINITIONS
* Revise Section 202 GENERAL DEFINITIONS to read as follows
EFFICIENCY, HVAC SYSTEM. The ratio of useful energy output (at the point of use) to the energy input in
cpnsistent units for a designated time period, expressed in percent.
RECOOLING. The removal of heat by sensible cooling of the supply air (directly or indirectly) which has been
previously heated above the temperature to which the air is to be supplied to the conditioned space for proper control
of the temperature of that space.
RECOVERED ENERGY. Energy utilized which would otherwise be wasted (i.e., not contribute to a desired end
use) from an energy utilization system.
RESET. Adjustment of the set point of a control instrument to a higher or lower value automatically or manually to
conserve energy.
RESIDENTIAL BUILDING. Detached one- and two-family dwellings
CHAPTER 2
DEFINITIONS
SECTION 201
GENERAL
201.1 Scope. Unless stated otherwise, the following words and
terms in this code shall have the meanings indicated in this
chapter.
201.2 Interchangeability. Words used in the present tense
include the future; words in the masculine gender include the
feminine and neuter; the singular number includes the plural
and the plural includes the singular.
201.3 Terms defined in other codes. Terms that are not
defined in this code but are defined in the International Build-
ing Code, International Fire Code, International Fuel Gas
Code, International Mechanical Code, International Plumb-
ing Code or the International Residential Code shall have the
meanings ascribed to them in those codes.
201A Terms not defined. Terms not defined by this chapter
shall have ordinarily accepted meanings such as the context
implies.
SECTION 202
GENERAL DEFINITIONS
ABOVE -GRADE WALL. A wall more than 50 percent above
grade and enclosing conditioned space. This includes
between -floor spandrels, peripheral edges of floors, roof and
basement knee walls, dormer walls, gable end walls, walls
enclosing a mansard roof and skylight shafts.
ACCESSIBLE. Admitting close approach as a result of not
being guarded by locked doors, elevation or other effective
means (see "Readily accessible").
ADDITION. An extension or increase in the conditioned
space floor area or height of a building or structure.
IAIR BARRIER. Material(s) assembled and joined together to
provide a barrier to air leakage through the building envelope.
An air barrier may be a single material or a combination of
materials.
ALTERATION. Any construction or renovation to an existing
structure other than repair or addition that requires a permit.
Also, a change in a mechanical system that involves an exten-
sion, addition or change to the arrangement, type or purpose of
the original installation that requires a permit.
APPROVED. Approval by the code official as a result of
investigation and tests conducted by him or her, or by reason of
accepted principles or tests by nationally recognized organiza-
tions.
AUTOMATIC. Self-acting, operating by its own mechanism
when actuated by some impersonal influence, as, for example,
a change in current strength, pressure, temperature or mechani-
cal configuration (see "Manual').
BASEMENT WALL. A wall 50 percent or more below grade
and enclosing conditioned space.
BUILDING. Any structure used or intended for supporting or
sheltering any use or occupancy.
BUILDING THERMAL ENVELOPE. The basement walls,
exterior walls, floor, roof, and any other building element that
enclose conditioned space. This boundary also includes the
boundary between conditioned space and any exempt or
unconditioned space.
C-FACTOR (THERMAL CONDUCTANCE). The coeffi-
cient of heat transmission (surface to surface) through a build-
ing component or assembly, equal to the time rate of heat flow
per unit area and the unit temperature difference between the
warm side and cold side surfaces (Btu/h ftt x °F) [W/(mz x K)].
CODE OFFICIAL. The officer or other designated authority
charged with the administration and enforcement of this code,
or a duly authorized representative.
COMMERCIAL BUILDING. For this code, all buildings
that are not included in the definition of "Residential build-
ings."
CONDITIONED FLOOR AREA. The horizontal projection
of the floors associated with the conditioned space.
CONDITIONED SPACE. An area or room within a building
being heated or cooled, containing uninsulated ducts, or with a
fixed opening directly into an adjacent conditioned space.
CRAWL SPACE WALL. The opaque portion of a wall that
encloses a crawl space and is partially or totally below grade.
CURTAIN WALL. Fenestration products used to create an
external nonload-bearing wall that is designed to separate the
exterior and interior environments.
DAYLIGHT ZONE.
1. Under skylights. The area under skylights whose hori-
zontal dimension, in each direction, is equal to the sky-
light dimension in that direction plus either the floor -to -
ceiling height or the dimension to a ceiling heightopaque
partition, or one-half the distance to adjacent skylights or
vertical fenestration, whichever is least.
2. Adjacent to vertical fenestration. The area adjacent to
vertical fenestration which receives daylight through the
fenestration. For purposes of this definition and unless
more detailed analysis is provided, the daylight zone
depth is assumed to extend into the space a distance of 15
feet (4572 mm) or to the nearest ceiling height opaque
partition, whichever is less. The daylight zone width is
assumed to be the width of the window plus 2 feet (610
mm) on each side, or the window width plus the distance
to an opaque partition, or the window width plus
one-half the distance to adjacent skylight or vertical fen-
estration, whichever is least.
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
DEFINITIONS
DEMAND CONTROL VENTILATION (DCV). A ventila-
tion system capability that provides for the automatic reduction
of outdoor air intake below design rates when the actual occu-
pancy of spaces served by the system is less than design occu-
pancy.
DUCT. A tube or conduit utilized for conveying air. The air
passages of self-contained systems are not to be construed as
air ducts.
DUCT SYSTEM. A continuous passageway for the transmis-
sion of air that, in addition to ducts, includes duct fittings,
dampers, plenums, fans and accessory air -handling equipment
and appliances.
DWELLING UNIT. A single unit providing complete inde-
pendent living facilities for one or more persons, including per-
manent provisions for living, sleeping, eating, cooking and
sanitation.
ECONOMIZER, AIR. A duct and damper arrangement and
automatic control system that allows a cooling system to sup-
ply outside air to reduce or eliminate the need for mechanical
cooling during mild or cold weather.
ECONOMIZER, WATER. A system where the supply air of
a cooling system is cooled indirectly with water that is itself
cooled by heat or mass transfer to the environment without the
use of mechanical cooling.
ENERGY ANALYSIS. A method for estimating the annual
energy use of the proposed design and standard reference
design based on estimates of energy use.
ENERGY COST. The total estimated annual cost for pur-
chased energy for the building functions regulated by this code,
including applicable demand charges.
ENERGY RECOVERY VENTILATION SYSTEM. Sys-
tems that employ air-to-air heat exchangers to recover energy
from exhaust air for the purpose of preheating, precooling,
humidifying or dehumidifying outdoor ventilation air prior to
supplying the air to a space, either directly or as part of an
HVAC system.
ENERGY SIMULATION TOOL. An approved software
program or calculation -based methodology that projects the
annual energy use of a building.
ENTRANCE DOOR. Fenestration products used for ingress,
egress and access in nonresidential buildings, including, but
not limited to, exterior entrances that utilize latching hardware
and automatic closers and contain over 50-percent glass specif-
ically designed to withstand heavy use and possibly abuse.
EXTERIOR WALL. Walls including both above -grade walls
and basement walls.
FAN BRAKE HORSEPOWER (BHP). The horsepower
delivered to the fan's shaft. Brake horsepower does not include
the mechanical drive losses (belts, gears, etc.).
FAN SYSTEM BHP. The sum of the fan brake horsepower of
all fans that are required to operate at fan system design condi-
tions to supply air from the heating or cooling source to the
conditioned space(s) and return it to the source or exhaust it to
the outdoors.
FAN SYSTEM DESIGN CONDITIONS. Operating condi-
tions that can be expected to occur during normal system oper-
ation that result in the highest supply fan airflow rate to
conditioned spaces served by the system.
FAN SYSTEM MOTOR NAMEPLATE HP. The sum of the
motor nameplate horsepower of all fans that are required to
operate at design conditions to supply air from the heating or
cooling source to the conditioned space(s) and return it to the
source or exhaust it to the outdoors.
.FENESTRATION. Skylights, roof windows, vertical win-
dows (fixed or moveable), opaque doors, glazed doors, glazed
block and combination opaquelglazed doors. Fenestration
includes products with glass and nonglass glazing materials.
F-FACTOR. The perimeter heat loss factor for slab -on -grade
floors (Btu/h x ft x °F) [W/(m x K)].
HEAT TRAP. An arrangement of piping and fittings, such as
elbows, or a commercially available heat trap that prevents
thermosyphoning of hot water during standby periods.
HEATED SLAB. Slab -on -grade construction in which the
heating elements, hydronic tubing, or hot air distribution sys-
tem is in contact with, or placed within or under, the slab.
HIGH -EFFICACY LAMPS. Compact fluorescent lamps,
T-8 or smaller diameter linear fluorescent lamps, or lamps with
a minimum efficacy of:
1. 60 lumens per watt for lamps over 40 watts,
2. 50 lumens per watt for lamps over 15 watts to 40 watts,
and
3. 40 lumens per watt for lamps 15 watts or less.
HUMIDISTAT. A regulatory device, actuated by changes in
humidity, used for automatic control of relative humidity.
INFILTRATION. The uncontrolled inward air leakage into a
building caused by the pressure effects of wind or the effect of
differences in the indoor and outdoor air density or both.
INSULATING SHEATHING. An insulating board with a
core material having a minimum R-value of R-2.
LABELED. Equipment, materials or products to which have
been affixed a label, seal, symbol or other identifying mark of a
nationally recognized testing laboratory, inspection agency or
other organization concerned with product evaluation that
maintains periodic inspection of the production of the
above -labeled items and whose labeling indicates either that
the equipment, material or product meets identified standards
or has been tested and found suitable for a specified purpose.
LISTED. Equipment, materials, products or services included
in a list published by an organization acceptable to the code
official and concerned with evaluation of products or services
that maintains periodic inspection of production of listed
equipment or materials or periodic evaluation of services and
whose listing states either that the equipment, material, product
or service meets identified standards or has been tested and
found suitable for a specified purpose.
LOW -VOLTAGE LIGHTING. Lighting equipment powered
through a transformer such as a cable conductor, a rail conduc-
tor and track lighting.
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
DEFINITIONS
MANUAL. Capable of being operated by personal interven-
tion (see "Automatic").
'NAMEPLATE HORSEPOWER. The nominal motor horse-
power rating stamped on the motor nameplate.
PROPOSED DESIGN. A description of the proposed build-
ing used to estimate annual energy use for determining compli-
ance based on total building performance.
READILY ACCESSIBLE. Capable of being reached quickly
for operation, renewal or inspection without requiring those to
whom ready access is requisite to climb over or remove obsta-
cles or to resort to portable ladders or access equipment (see
"Accessible").
REPAIR. The reconstruction or renewal of any part of an exist-
ing building.
RESIDENTIAL BUILDING. For this code, includes R-3
buildings, as well as R-2 and R-4 buildings three stories or less
in height above grade.
ROOF ASSEMBLY. A system designed to provide weather
protection and resistance to design loads. The system consists
of a roof covering and roof deck or a single component serving
as both the roof covering and the roof deck. A roof assembly
includes the roof covering, underlayment, roof deck, insula-
tion, vapor retarder and interior finish.
R-VALUE (THERMAL RESISTANCE). The inverse of the
time rate of heat flow through a body from one of its bounding
surfaces to the other surface for a unit temperature difference
between the two surfaces, under steady state conditions, per
unit area (h • ft2 - °FBtu) [(W - K)/W].
SCREW LAMP HOLDERS. A lamp base that requires a
screw -in -type lamp, such as a compact -fluorescent, incandes-
cent, or tungsten -halogen bulb.
SERVICE WATER HEATING. Supply of hot water for pur-
poses other than comfort heating.
SKYLIGHT. Glass or other transparent or translucent glazing
material installed at a slope of 15 degrees (0.26 rad) or more
from vertical. Glazing material in skylights, including unit sky-
lights, solariums, sunrooms, roofs and sloped walls is included
in this definition.
SLEEPING UNIT. A room or space in which people sleep,
which can also include permanent provisions for living, eating,
and either sanitation or kitchen facilities but not both. Such
rooms and spaces that are also part of a dwelling unit are not
sleeping units.
SOLAR HEAT GAIN COEFFICIENT (SHGC). The ratio
of the solar heat gain entering the space through the fenestra-
tion assembly to the incident solar radiation. Solar heat gain
includes directly transmitted solar heat and absorbed solar
radiation which is then reradiated, conducted or convected into
the space.
STANDARD REFERENCE DESIGN. A version of the pro-
posed design that meets the minimum requirements of this
code and is used to determine the maximum annual energy use
requirement for compliance based on total building perfor-
mance.
STOREFRONT. A nonresidential system of doors and win-
dows mulled as a composite fenestration structure that has been
designed to resist heavy use. Storefront systems include, but are
not limited to, exterior fenestration systems that span from the
floor level or above to the ceiling of the same story on commer-
cial buildings.
SUNROOM. A one-story structure attached to a dwelling with
a glazing area in excess of 40 percent of the gross area of the
structure's exterior walls and roof.
THERMAL ISOLATION. Physical and spare conditioning
separation from conditioned space(s). The conditioned
space(s) shall be controlled as separate zones for heating and
cooling or conditioned by separate equipment.
THERMOSTAT. An automatic control device used to main-
tain temperature at a fixed or adjustable set point.
U-FACTOR (THERMAL TRANSMITTANCE). The coef-
ficient of heat transmission (air to air) through a building com-
ponent or assembly, equal to the time rate of heat flow per unit
area and unit temperature difference between the warm side
and cold side air films (Btu/h - ft2 - °F) [W/(m2 - K)].
VENTILATION. The natural or mechanical process of sup-
plying conditioned or unconditioned air to, or removing such
air from, any space.
VENTILATION AIR. That portion of supply air that comes
from outside (outdoors) plus any recirculated air that has been
treated to maintain the desired quality of air within a designated
space.
ZONE. A space or group of spaces within a building with heat-
ing or cooling requirements that are sufficiently similar so that
desired conditions can be maintained throughout using a single
controlling device.
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
CHAPTER 3
DESIGN CONDITIONS
TABLE 302.1
EXTERIOR DESIGN CONDITIONS
* Revise footnotes b and c and add footnote d under table 302.1 as follows:
b. The degree days heating (base 60"F) and cooling (base 60°F) shall be selected from NOAA "Annual Degree
Days to Selected Bases Derived from the 1961-1990 Normals," the ASHRAE Handbook ojFundamentals,
data available from adjacent military installations, or other source of local weather data. acceptable to the
code official.
c. The climate zone shall be selected from the map provided in Figure 302.1(1) on the following page.
d. Load calculations may be determined by using ACCA Manual J for residential,
and ACCA Manual N for commercial.
* Add the following FIGURES: 302.1(1) showing the four climate zones in Arkansas with a list of counties and
their associated climate zones, and Table 302.2 Arkansas HDD and zones; and add FIGURE 501.3 showing the
two commercial climate zones in Arkansas that apply to Chapter 5 of the 2009 IECC and ASHRAE 90.1-2007.
Arkansas Energy Code for New Building Construction Supplements and Amendments 13
f
Arkansas Climate Zones for Residential Construction.
Applies to Commercial Construction up to 12/31/2012
ARKANSAS
Zone
County
Zone
County
6B
Arkansas (H)
8
Lawrence
6B
Ashley (H)
7B
Lee (H)
9B
Baxter
6B
Lincoln (H)
9B
Benton
6B
Little River (H)
98
Boone
7B
Logan (H)
6B
Bradley (H)
7B
Lonoke(H)
6B
Calhoun (H)
9B
Madison
9B
Carroll
9B
Marion
6B
Chicot (H)
6B
Miller (H)
6B
Clark (H)
8
Mississippi
8
Clay
7B
Monroe (H)
8
Cleburne
8
Montgomery
6B
Cleveland (H)
6B
Nevada (H)
63
Columbia (H)
9B
Newton
7B
Conway (H)
6B
Ouachita (H)
8
Craighead
7B
Perry (H)
8
Crawford
7B
Phillips (H)
7B
Crittenden (H)
7B
Pike (H)
7B
Cross (H)
8
Poinsett
6B
Dallas (H)
8
Polk
6B
Desha(H)
8
Pope
6B
Drew (H)
7B
Prairie (H)
7B
Faulkner (H)
7B
Pulaski (H)
8
Franklin
8
Randolph
8
Fulton
7B
Saline (H)
7B
Garland (H)
7B
Scott (H)
68
Grant (H)
9B
Searcy
8
Greene
8
Sebastian
7B
Hempstead (H)
78
Sevier (H)
7B
Hot Spring (H)
8
Sharp
7B
Howard (H)
7B
St Francis (H)
8
Independence
9B
Stone
8
Izard
6B
Union (H)
8
Jackson
8
Van Buren
6B
Jefferson (H)
96
Washington
8
Johnson
7B
While (H)
6B
Lafayette (H)
7B
Woodruff (H)
7B
Yell (H)
Table 302.2 Arkansas HDD* and zones
Zone
HDD
6B
2,500 — 2,999
7B
3,000 — 3,499
8
3,500 — 3,999
9B
4,000 — 4,499
* HDD = Heating Degree Days
Note: Counties identified with
(H) shall be considered "hot and
humid climate areas" for
purposes of the application of
Section 502.1.1.
Arkansas Energy Code for New Building Construction Supplements and Amendments 14
CHAPTER 3
GENERAL REQUIREMENTS
SECTION 301
CLIMATE ZONES
301.1 General. Climate zones from Figure 301.1 or Table
301.1 shall be used in determining the applicable requirements
from Chapters 4 and 5. Locations not in Table 301.1 (outside
the United States) shall be assigned a climate zone based on
Section 301.3.
'301.2 Warm humid counties. Warm humid counties are iden-
tified in Table 301.1 by an asterisk.
301.3 International climate zones. The climate zone for any
location outside the United States shall be determined by
y applying Table 301.3(1) and then Table 301.3(2).
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
�4
d,
d
GENERAL REQUIREMENTS
TABLE 301.1
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
Note: Table 301.1 in the 2006 edition has been replaced in its entirety. Margin lines are omitted for clarity.
Key: A — Moist, B —
Dry, C — Marine. Absence
of moisture designation indicates moisture regime is irrelevant.
Asterisk (•) indicates a warm -humid location.
US STATES
ALABAMA
3A Henry*
ALASKA
5B Coconino
3A Desha
3A Autauga*
3A Houston*
7 Aleutians East
4B Gila
3A Drew
2A Baldwin*
3A Jackson
7 Aleutians West
3B Graham
3A Faulkner
3A Barbour*
3A Jefferson
7 Anchorage
3B Greenlee
3A Franklin
3A Bibb
3A Lamar
8 Bethel
2B La Paz
4A Fulton
3A Blount
3A Lauderdale
7 Bristol Bay
2B Maricopa
3A Garland
3A Bullock*
3A Lawrence
7 Denali
3B Mohave
3A Grant
3A Butler*
3A Lee
8 Dillingham
5B Navajo
3A Greene
3A Calhoun
3A Limestone
8 Fairbanks North
2B Pima
3A Hempstead*
3A Chambers
3A Lowndes*
Star
2B Pinal
3A Hot Spring
3A Cherokee
3A Macon*
7 Haines
3B Santa Cruz
3A Howard
3A Chilton
3A Madison
7 Juneau
4B Yavapai
3A Independence
3A Choctaw*
3A Marengo*
7 Kenai Peninsula
2B Yuma
4A Izard
3A Clarke*
3A Marion
7 Ketchikan Gateway
ARKANSAS
3A Jackson
3A Clay
3A Marshall
7 Kodiak Island
3A Arkansas
3A Jefferson
3A Cleburne
2A Mobile*
7 Lake and Peninsula
3A Ashley
3A Johnson
3A Coffee*
3A Monroe*
7 Matanuska-Susitna
4A Baxter
3A Lafayette*
3A Colbert
3A Montgomery*
8 Nome
4A Benton
3A Lawrence
3A Conecuh*
3A Morgan
8 North Slope
4A Boone
3A Lee
3A Coosa
3A Perry*
8 Northwest Arctic
3A Bradley
3A Lincoln
3A Covington*
g
3A Pickens
7 Prince of Wales-
Outer Ketchikan
3A Calhoun
3A Little River*
3A Crenshaw*
3A Pike*
7 Sitka
4A Carroll
3A Logan
3A Cullman
3A Randolph
7 Skagway-Hoonah-
3A Chicot
3A Lonoke
3A Dale*
3A Russell*
Angoon
3A Clark
4A Madison
3A Dallas*
3A Shelby
8 Southeast Fairbanks
3A Clay
4A Marion
3A DeKalb
3A St. Clair
7 Valdez -Cordova
3A Cleburne
3A Miller*
3A Elmore*
3A Sumter
8 Wade Hampton
3A Cleveland
3A Mississippi
3A Escambia*
3A Talladega
7 Wrangell-
3A Columbia*
3A Monroe
3A Etowah
3A Tallapoosa
Petersburg
3A Conway
3A Montgomery
3A Fayette
3A Tuscaloosa
7 Yakutat
3A Craighead
3A Nevada
3A Franklin
3A Walker
8 Yukon -Koyukuk
3A Crawford
4A Newton
3A Geneva*
3A Washington*
ARIZONA
3A Crittenden
3A Ouachita
3A Greene
3A Wilcox*
5B Apache
3A Cross
3A Perry
3A Hale
3A Winston
3B Cochise
3A Dallas
3A Phillips
(continued)
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 11
GENERAL
3A Pike
3A Poinsett
3A Polk
3A Pope
3A Prairie
3A Pulaski
3A Randolph
3A Saline
3A Scott
4A Searcy
3A Sebastian
3A Sevier*
3A Sharp
3A St. Francis
4A Stone
3A Union*
3A Van Buren
4A Washington .
3A White
3A Woodruff
3A Yell
CALIFORNIA
3C Alameda
6B Alpine
4B Amador
3B Butte
4B Calaveras
3B Colusa
3B Contra Costa
4C Del Norte
4B El Dorado
3B Fresno
3B Glenn
4C Humboldt
2B Imperial
4B Inyo
3B Kern
3B Kings
4B Lake
5B Lassen
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
3B Los Angeles
3B Madera
3C Marin
4B Mariposa
3C Mendocino
3B Merced
5B Modoc
6B Mono
3C Monterey
3C Napa
5B Nevada
3B Orange
3B Placer
5B Plumas
3B Riverside
3B Sacramento
3C San Benito
3B San
Bernardino
3B San Diego
3C San Francisco
3B San Joaquin
3C San Luis Obispo
3C San Mateo
3C Santa Barbara
3C Santa Clara
3C Santa Cruz
3B Shasta
5B Sierra
5B Siskiyou
3B Solano
3C Sonoma
3B Stanislaus
3B Sutter
3B Tehama
4B Trinity
3B Tulare
4B Tuolumne
3C Ventura
3B Yolo
3B Yuba
COLORADO
5B Adams
6B Alamosa
5B Arapahoe
6B Archuleta
4B Baca
5B Bent
5B Boulder
6B Chaffee
5B Cheyenne
7. Clear Creek
6B Conejos
6B Costilla
5B Crowley
6B Custer
5B Delta
5B Denver
6B Dolores
5B Douglas
6B Eagle
5B Elbert
5B El Paso
5B Fremont
5B Garfield
5B Gilpin
7 Grand
7 Gunnison
7 Hinsdale
5B Huerfano
7 Jackson
5B Jefferson
5B Kiowa
5B Kit Carson
7 Lake
5B La Plata
5B Latimer
4B Las Animas
5B Lincoln
5B Logan
5B Mesa
7 Mineral
6B Moffat
5B Montezuma
5B Montrose
5B Morgan
4B Otero
6B Ouray
7 Park
5B Phillips
7 Pitkin
5B Prowers
5B Pueblo
6B Rio Blanco
7 Rio Grande
7 Routt
6B Saguache
7 San Juan
6B San Miguel
5B Sedgwick
7 Summit
5B Teller
5B Washington
5B Weld
5B Yuma
CONNECTICUT
5A (all)
DELAWARE
4A (all)
DISTRICT OF
COLUMBIA
4A (all)
FLORIDA
2A Alachua*
2A Baker*
2A Bay*
2A Bradford*
2A Brevard*
lA Broward*
2A Calhoun*
2A Charlotte*
2A Citrus*
2A Clay*
2A Collier*
2A Columbia*
2A DeSoto*
2A Dixie*
2A Duval*
2A Escambia*
2A Flagler*
2A Franklin*
2A Gadsden*
2A Gilchrist*
2A Glades*
2A Gulf*
2A Hamilton*
2A Hardee*
2A Hendry*
2A Hernando*
2A Highlands*
2A Hillsborough*
2A Holmes*
2A Indian River*
2A Jackson*
2A Jefferson*
2A Lafayette*
2A Lake*
2A Lee*
2A Leon*
2A Levy*
2A Liberty*
2A Madison*
2A Manatee*
2A Marion*
2A Martin*
IA Miami -Dade*
IA Monroe*
2A Nassau*
2A Okaloosa*
2A Okeechobee*
(continued)
12 2009 INTERNATIONAL ENERGY CONSERVATION CODE'
City Of FayettevillBGENERAL REQUIREMENTS
Building Safety Division
113 W. Mountain St.
F
AR 72701
TABLE 301.1—continuedayetteville,
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY
STATE, COUNTY AND TERRITORY
2A Orange*
2A Camden*
4A Gilmer
3A Monroe
3A Twiggs*
2A Osceola*
3A Candler*
3A Glascock
3A Montgomery*
4A Union
2A Palm Beach*
3A Carroll
2A Glynn*
3A Morgan
3A Upson
2A Pasco*
4A Catoosa
4A Gordon
4A Murray
4A Walker
2A Pinellas*
2A Charlton*
2A Grady*
3A Muscogee
3A Walton
2A Polk*
2A Chatham*
3A Greene
3A Newton
2A Ware*
2A Putnam*
3A Chattahoochee*
3A Gwinnett
3A Oconee
3A Warren
2A Santa Rosa*
4A Chattooga
4A Habersham
3A Oglethorpe
3A Washington
2A Sarasota*
3A Cherokee
4A Hall
3A Paulding
2A Wayne*
2A Seminole*
3A Clarke
3A Hancock
3A Peach*
3A Webster*
2A St. Johns*
3A Clay*
3A Haralson
4A Pickens
3A Wheeler*
2A St. Lucie*
3A Clayton
3A Hams
2A Pierce*
4A White
2A Sumter*
2A Clinch*
3A Hart
3A Pike
4A Whitfield
2A Suwannee*
3A Cobb
3A Heard
3A Polk
3A Wilcox*
2A Taylor*
3A Coffee*
3A Henry
3A Pulaski*
3A Wilkes
2A Union*
2A Colquitt*
3A Houston*
3A Putnam
3A Wilkinson
2A Volusia*
3A Columbia
3A Irwin*
3A Quitman*
3A Worth*
2A Wakulla*
2A Cook*
3A Jackson
4A Rabun
HAWAII
2A Walton*
3A Coweta
3A Jasper
3A Randolph*
IA (all)*
2A Washington*
3A Crawford
2A Jeff Davis*
3A Richmond
3A Crisp*
3A Jefferson
3A Rockdale
IDAHO
GEORGIA
4A Dade
3A Jenkins*
3A Schley*
5B Ada
2A Appling*
4A Dawson
3A Johnson*
3A Screven*
6B Adams
2A Atkinson*
2A Decatur*
3A Jones
2A Seminole*
6B Bannock
2A Bacon*
3A DeKalb
3A Lamar
3A Spalding
6B Bear Lake
2A Baker*
3A Dodge*
2A Lanier*
4A Stephens
5B Benewah
3A Baldwin
3A Dooly*
3A Laurens*
3A Stewart*
6B Bingham
4A Banks
3A Dougherty*
3A Lee*
3A Sumter*
6B Blaine
3A Barrow
3A Douglas
2A Liberty*
3A Talbot
6B Boise
3A Bartow
3A Early*
3A Lincoln
3A Taliaferro
6B Bonner
3A Ben Hill*
2A Echols*
2A Long*
2A Tattnall*
6B Bonneville
2A Berrien*
2A Effingham*
2A Lowndes*
3A Taylor*
6B Boundary
3A Bibb
3A Elbert
4A Lumpkin
3A Telfair*
6B Butts
3A Bleckley*
3A Emanuel*
3A Macon*
3A Terrell*
6B Camas
2A Brantley*
2A Evans*
3A Madison
2A Thomas*
5B Canyon
2A Brooks*
4A Fannin
3A Marion*
3A Tift*
6B Caribou
2A Bryan*
3A Fayette
3A McDuffie
2A Toombs*
5B Cassia
3A Bulloch*
4A Floyd
2A McIntosh*
4A Towns
6B Clark
3A Burke
3A Forsyth
3A Meriwether
3A Treutlen*
5B Clearwater
3A Butts
4A Franklin
2A Miller*
3A Troup
6B Custer
3A Calhoun*
3A Fulton
2A Mitchell*
3A Tumer*
5B Elmore
(continued)
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 13
GENERAL REQUIREMENTS
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
6B Franklin
5A Cook
4A Macoupin
4A Wayne
5A Henry
6B Fremont
4A Crawford
4A Madison
4A White
5A Howard
5B Gem
5A Cumberland
4A Marion
5A Whiteside
5A Huntington
5B Gooding
5A DeKalb
5A Marshall
5A Will
4A Jackson
5B Idaho
5A De Witt
5A Mason
4A Williamson
5A Jasper
6B Jefferson
5A Douglas
4A Massac
5A Winnebago
5A Jay
5B Jerome
5A DuPage
5A McDonough
5A Woodford
4A Jefferson
5B Kootenai
5A Edgar
5A McHenry
INDIANA
4A Jennings
5B Latah
4A Edwards
5A McLean
5A Adams
5A Johnson
6B Lemhi
4A Effingham
5A Menard
5A Allen
4A Knox
5B Lewis
4A Fayette
5A Mercer
5A Bartholomew
5A Kosciusko
5B Lincoln
5A Ford
4A Monroe
5A Benton
5A Lagrange
6B Madison
4A Franklin
4A Montgomery
5A Blackford
5A Lake
5B Minidoka
5A Fulton
5A Morgan
5A Boone
5A La Porte
5B Nez Perce
4A Gallatin
5A Moultrie
4A Brown
4A Lawrence
6B Oneida
5A Greene
5A Ogle
5A Carroll
5A Madison
5B Owyhee
5A Grundy
5A Peoria
5A Cass
5A, Marion
5B Payette
4A Hamilton
4A Perry
4A Clark
5A Marshall
5B Power
5A Hancock
5A Piatt
5A Clay
4A Martin
5B Shoshone
4A Hardin
5A Pike
5A Clinton
5A Miami
6B Teton
5A Henderson
4A Pope
4A Crawford
4A Monroe
5B Twin Falls
5A Henry
4A Pulaski
4A Daviess
5A Montgomery
6B Valley
5A Iroquois
SA Putnam
4A Dearborn
5A Morgan
5B Washington
4A Jackson
4A Randolph
5A Decatur
5A Newton
ILLINOIS
4A Jasper
4A Richland
5A De Kalb
5A Noble
5A Adams
4A Jefferson
5A Rock Island
5A Delaware
4A Ohio
4A Alexander
5A Jersey
4A Saline
4A Dubois
4A Orange
4A Bond
5A Jo Daviess
5A Sangamon
5A Elkhart
5A Owen
5A Boone
4A Johnson
5A Schuyler
5A Fayette
5A Parke
5A Brown
5A Kane
5A Scott
4A Floyd
4A Perry
5A Bureau
5A Kankakee
4A Shelby
5A Fountain
4A Pike
5A Calhoun
5A Kendall
5A Stark
5A Franklin
5A Porter
5A Carroll
5A Knox
4A St. Clair
5A Fulton
4A Posey
5A Cass
5A Lake
5A Stephenson
4A Gibson
5A Pulaski
5A Champaign
5A La Salle
5A Tazewell
5A Grant
5A Putnam
4A Christian
4A Lawrence
4A Union
4A Greene
5A Randolph
5A Clark
5A Lee
5A Vermilion
5A Hamilton
4A Ripley
4A Clay
5A Livingston .
4A Wabash
5A Hancock
5A Rush
4A Clinton
5A Logan
5A Warren
4A Harrison
4A Scott
5A Coles
5A Macon
4A Washington
5A Hendricks
5A Shelby
(continued)
14 2009INTERNATIONAL ENERGY CONSERVATION CODE®
GENERAL REQUIREMENTS
4A Spencer
5A Starke
5A Steuben
5A St. Joseph
4A Sullivan
4A Switzerland
5A Tippecanoe
5A Tipton
5A Union
4A Vanderburgh
5A Vermillion
5A Vigo
5A Wabash
5A Warren
4A Warrick
4A Washington
5A Wayne
5A Wells
5A White
5A Whitley
IOWA
5A Adair
5A Adams
6A Allamakee
5A Appanoose
5A Audubon
5A Benton
6A Black Hawk
5A Boone
6A Bremer
6A Buchanan
6A Buena Vista
6A Butler
6A Calhoun
5A Carroll
5A Cass
5A Cedar
6A Cerro Gordo
6A Cherokee
6A Chickasaw
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
5A Clarke
6A Clay
6A Clayton
5A Clinton
5A Crawford
5A Dallas
5A Davis
5A Decatur
6A Delaware
5A Des Moines
6A Dickinson
5A Dubuque
6A Emmet
6A Fayette
6A Floyd
6A Franklin
5A Fremont
5A Greene
6A Grundy
5A Guthrie
6A Hamilton
6A Hancock
6A Hardin
5A Harrison
5A Henry
6A Howard
6A Humboldt
6A Ida
5A Iowa
5A Jackson
5A Jasper
5A Jefferson
5A Johnson
5A Jones
5A Keokuk
6A Kossuth
5A Lee
5A Linn
5A Louisa
5A Lucas
6A Lyon
5A Madison
5A Mahaska
5A Marion
5A Marshall
5A Mills
6A Mitchell
5A Monona
5A Monroe
5A Montgomery
5A Muscatine
6A O'Brien
6A Osceola
5A Page
6A Palo Alto
6A Plymouth
6A Pocahontas
5A Polk
5A Pottawattamie.
5A Poweshiek
5A Ringgold
6A Sac
5A Scott
5A Shelby
6A Sioux
5A Story
5A Tama
5A Taylor
5A Union
5A Van Buren
5A Wapello
5A Warren
5A Washington
5A Wayne
6A Webster
6A Winnebago
6A Winneshiek
5A Woodbury
6A Worth
6A Wright
(continued)
KANSAS
4A Allen
4A Anderson
4A Atchison
4A Barber
4A Barton
4A Bourbon
4A Brown
4A Butler
4A Chase
4A Chautauqua
4A Cherokee
5A Cheyenne
4A Clark
4A Clay
5A Cloud
4A Coffey
4A Comanche
4A Cowley
4A Crawford
5A Decatur
4A Dickinson
4A Doniphan
4A Douglas
4A Edwards
4A Elk
5A Ellis
4A Ellsworth
4A Finney
4A Ford
4A Franklin
4A Geary
5A Gove
5A Graham
4A Grant
4A Gray
5A Greeley
4A Greenwood
5A Hamilton
4A Harper
4A Harvey
4A Haskell
4A Hodgeman
4A Jackson
4A Jefferson
5A Jewell
4A Johnson
4A Kearny
4A Kingman
4A Kiowa
4A Labette
5A Lane
4A Leavenworth
4A Lincoln
4A Linn
5A Logan
4A Lyon
4A Marion
4A Marshall
4A McPherson
4A Meade
4A Miami
5A Mitchell
4A Montgomery
4A Morris
4A Morton
4A Nemaha
4A Neosho
5A Ness
5A Norton
4A Osage
5A Osborne
4A Ottawa
4A Pawnee
5A Phillips
4A Pottawatomie
4A Pratt
5A Rawlins
4A Reno
5A Republic
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 15
GENERAL REQUIREMENTS
4A Rice
4A Riley
5A Rooks
4A Rush
4A Russell
4A Saline
5A Scott
4A Sedgwick
4A Seward
4A Shawnee
5A Sheridan
5A Sherman
5A Smith
4A Stafford
4A Stanton
4A Stevens
4A Sumner
5A Thomas
SA Trego
4A Wabaunsee
5A Wallace
4A Washington
5A Wichita
4A Wilson
4A Woodson
4A Wyandotte
KENTUCKY
4A (all)
LOUISIANA
2A Acadia*
2A Allen*
2A Ascension*
2A Assumption*
2A Avoyelles*
2A Beauregard*
3A Bienville*
3A Bossier*
3A Caddo*
2A Calcasieu*
3A Caldwell*
TABLE 301.1-continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
2A Cameron*
3A Catahoula*
3A Claiborne*
3A Concordia*
3A De Soto*
2A East Baton
Rouge*
3A East Carroll
2A East Feliciana*
2A Evangeline*
3A Franklin*
3A Grant*
2A Iberia*
2A Iberville*
3A Jackson*
2A Jefferson*
2A Jefferson Davis*
2A Lafayette*
2A Lafourche*
3A La Salle*
3A Lincoln*
2A Livingston*
3A Madison*
3A Morehouse
3A Natchitoches*
2A Orleans*
3A Ouachita*
2A Plaquemines*
2A Pointe Coupee*
2A Rapides*
3A Rod River*
3A Richland*
3A Sabine*
2A St. Bernard*
2A St. Charles*
2A St. Helena*
2A St. James*
2A St. John the
Baptist* .
2A St. Landry*
2A St. Martin*
2A St. Mary*
2A St. Tammany*
2A Tangipahoa*
3A Tensas*
2A Terrebonne*
3A Union*
2A Vermilion*
3A Vernon*
2A Washington*
3A Webster*
2A West Baton
Rouge*
3A West Carroll
2A West Feliciana*
3A Winn*
MAINE
6A Androscoggin
7 Aroostook
6A Cumberland
6A Franklin
6A Hancock
6A Kennebec
6A Knox
6A Lincoln
6A Oxford
6A Penobscot
6A Piscataquis
6A Sagadahoc
6A Somerset
6A Waldo
6A Washington
6A York
MARYLAND
4A Allegany
4A Anne Arundel
4A Baltimore
4A Baltimore (city)
4A Calvert
4A Caroline
4A Carroll
(continued)
4A Cecil
4A Charles
4A Dorchester
4A Frederick
5A Garrett
4A Harford
4A Howard
4A Kent
4A Montgomery
4A Prince
George's
4A Queen Anne's
4A Somerset
4A St. Mary's
4A Talbot
4A Washington
4A Wicomico
4A Worcester
MASSACHUSETTS
5A (all)
MICHIGAN
6A Alcona
6A Alger
5A Allegan
6A Alpena
6A Antrim
6A Arenac
7 Baraga
5A Barry
5A Bay
6A Benzie
5A Berrien
5A Branch
5A Calhoun
5A Cass
6A Charlevoix
6A Cheboygan
7 Chippewa
6A Clare
5A Clinton
6A Crawford
6A Delta
6A Dickinson
5A Eaton
6A Emmet
5A Genesee
6A Gladwin
7 Gogebic
6A Grand Traverse
5A Gratiot
5A Hillsdale
7 Houghton
6A Huron
5A Ingham
5A Ionia
6A Iosco
7 Iron
6A Isabella
5A Jackson
5A Kalamazoo
6A Kalkaska
5A Kent
7 Keweenaw
6A Lake
5A Lapeer
6A Leelanau
5A Lenawee
5A Livingston
7 Luce
7 Mackinac
5A Macomb
6A Manistee
6A Marquette
6A Mason
6A Mecosta
6A Menominee
5A Midland
6A Missaukee
5A Monroe
5A Montcalm
r
16 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
GENERAL REQUIREMENTS
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
6A Montmorency
7 Cook
7 Pennington
3A Carroll
3A Montgomery
5A Muskegon
6A Cottonwood
7 Pine
3A Chickasaw
3A Neshoba
6A Newaygo
7 Crow Wing
6A Pipestone
3A Choctaw
3A Newton
5A Oakland
6A Dakota
7 Polk
3A Claiborne*
3A Noxubee
6A Oceana
6A Dodge
6A Pope
3A Clarke
3A Oktibbeha
6A Ogemaw
6A Douglas
6A Ramsey
3A Clay
3A Panola
7 Ontonagon
6A Faribault
7 Red Lake
3A Coahoma
2A Pearl River*
6A Osceola
6A Fillmore
6A Redwood
3A Copiah*
3A Perry*
6A Oscoda
6A Freeborn
6A Renville
3A Covington*
3A Pike*
6A Otsego
6A Goodhue
6A Rice
3A De3oto
3A Pontotoc
5A Ottawa
7 Grant
6A Rock
3A Forrest*
3A Prentiss
6A Presque Isle
6A Hennepin
7 Roseau
3A Franklin*
3A Quitman
6A Roscommon
6A Houston
6A Scott
3A George*
3A Rankin*
5A Saginaw
7 Hubbard
6A Sherburne
3A Greene*
3A Scott
6A Sanilac
6A Isanti
6A Sibley
3A Grenada
3A Sharkey
7 Schoolcraft
7 Itasca
6A Stearns
2A Hancock*
3A Simpson*
5A Shiawassee
6A Jackson
6A Steele
2A Harrison*
3A Smith*
5A St. Clair
7 Kanabec
6A Stevens
3A Hinds*
2A Stone*
5A St. Joseph
6A Kandiyohi
7 St. Louis
3A Holmes
3A Sunflower
5A Tuscola
7 Kittson
6A Swift
3A Humphreys
3A Tallahatchie
5A Van Buren
7 Koochiching
6A Todd
3A Issaquena
3A Tate
5A Washtenaw
6A Lac qui Parle
6A Traverse
3A Itawamba
3A Ti ah
PP
5A Wayne
7 Lake
6A Wabasha
2A Jackson*
3A Tishomingo
6A Wexford
7 Lake of the Woods
7 Wadena
3A Jasper
3A Tunica
6A Le Sueur
3A Jefferson*
3A Union
MINNESOTA
6A Lincoln
6A Waseca
3A Jefferson Davis
7 Aitkm
6A Lyon
6A Washington
3A Jones*
3A Walthall*
6A Anoka
7 Mahnomen
6A Watonwan
3A Kemper
3A Warren *
7 Becker
7 Marshall
7 Wilkin
3A Lafayette
3A Washington
7 Beltrami
6A Martin
6A Winona
3A Lamar*y
3A Wayne*
6A Benton
6A McLeod
6A Wright
g
3A Lauderdale
3A Webster
6A Big Stone
6A Meeker
6A Yellow
3A Lawrence*
3A Wilkinson*
Medicine
3A Winston
6A Blue Earth
7 Mille Lacs
3A Leake
6A Brown
6A Morrison
MISSISSIPPI
3A Lee
3A Yalobusha
7 Carlton
6A Mower
3A Adams*
3A Leflore
3A Yazoo
6A Carver
6A Murray
3A Alcorn
3A Lincoln*
MISSOURI
7 Cass
6A Nicollet
3A Amite*
3A Lowndes
5A Adair
6A Chippewa
6A Nobles
3A Attala
3A Madison
5A Andrew
6A Chisago
7 Norman
3A Benton
3A Marion*
5A Atchison
7 Clay
6A Olmsted
3A Bolivar
3A Marshall
4A Audrain
7 Clearwater
7 Otter Tail
3A Calhoun
3A Monroe
4A Barry
(continued)
2009INTERNATIONAL ENERGY CONSERVATION CODE®
17
GENERAL REQUIREMENTS
4A Barton
4A Bates
4A Benton
4A Bollinger
4A Boone
5A Buchanan
4A Butler
5A Caldwell
4A Callaway
4A Camden
4A Cape Girardeau
4A Carroll
4A Carter
4A Cass
4A Cedar
5A Chariton
4A Christian
5A Clark
4A Clay
5A Clinton
4A Cole
4A Cooper
4A Crawford
4A Dade
4A Dallas
5ADaviess
5A DeKalb
4A Dent
4A Douglas
4A Dunklin
4A Franklin
4A Gasconade
5A Gentry
4A Greene
5A Grundy
5A Harrison
4A Henry
4A Hickory
5A Holt
4A Howard
4A Howell
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
4A Iron
4A Jackson
4A Jasper
4A Jefferson
4A Johnson
5A Knox
4A Laclede
4A Lafayette
4A Lawrence
5A Lewis
4A Lincoln
5A Linn
5A Livingston
5A Macon
4A Madison
4A Manes
5A Marion
4A McDonald
5A Mercer
4A Miller
4A Mississippi
4A Moniteau
4A Monroe
4A Montgomery
4A Morgan
4A New Madrid
4A Newton
5A Nodaway
4A Oregon
4A Osage
4A Ozark
4A Pemiscot
4A Perry
4A Pettis
4A Phelps
5A Pike
4A Platte
4A Polk
4A Pulaski
5A Putnam
5A Ralls
4A Randolph
4A Ray
4A Reynolds
4A Ripley
4A Saline
5A Schuyler
5A Scotland
4A Scott
4A Shannon
5A Shelby
4A St. Charles
4A St. Clair
4A Ste. Genevieve
4A St. Francois
4A St. Louis
4A St. Louis (city)
4A Stoddard
4A Stone
5A Sullivan
4A Taney
4A Texas
4A Vernon
4A Warren
4A Washington
4A Wayne
4A Webster
5A Worth
4A Wright
MONTANA
6B (all)
NEBRASKA
5A (all)
NEVADA
5B Carson City
(city)
5B Churchill
3B Clark
5B Douglas
5B Elko
5B Esmeralda
(continued)
5B Eureka
5B Humboldt
5B Lander
5B Lincoln
5B Lyon
5B Mineral
5B Nye
5B Pershing
5B Storey
5B Washoe
5B White Pine
NEW
HAMPSHIRE
6A Belknap
6A Carroll
5A Cheshire
6A Coos
6A Grafton
5A Hillsborough
6A Merrimack
5A Rockingham
5A Strafford
6A Sullivan
NEW
JERSEY
4A Atlantic
5A Bergen
4A Burlington
4A Camden
4A Cape May
4A Cumberland
4A Essex
4A Gloucester
4A Hudson
5A Hunterdon
5A Mercer
4A Middlesex
4A Monmouth
5A Moms
4A Ocean
5A Passaic
4A Salem
5A Somerset
5A Sussex
4A Union
5A Warren
NEW MEXICO
4B Bernalillo
5B Catron
3B Chaves
4B Cibola
5B Colfax
4B Curry
4B DeBaca
3B Dona Ana
3B Eddy
4B Grant
4B Guadalupe
5B Harding
3B Hidalgo
3B Lea
4B Lincoln
5B Los Alamos
3B Luna
5B McKinley
5B Mora
3B Otero
4B Quay
5B Rio Arriba
4B Roosevelt
5B Sandoval
5B San Juan
5B San Miguel
5B Santa Fe
4B Sierra
4B Socorro
5B Taos
5B Torrance
4B Union
4B Valencia
1a 2009INTERNATIONAL ENERGY CONSERVATION COD&
GENERAL REQUIREMENTS
NEW YORK
5A Albany
6A Allegany
4A Bronx
6A Broome
6A Cattaraugus
5A Cayuga
5A Chautauqua
5A Chemung
6A Chenango
6A Clinton
5A Columbia
5A Cortland
6A Delaware
5A Dutchess
5A Erie
6A Essex
6A Franklin
6A Fulton
SA Genesee
5A Greene
6A Hamilton
6A Herkimer
6A Jefferson
4A Kings
6A Lewis
5A Livingston
6A Madison
5A Monroe
6A Montgomery
4A Nassau
4A New York
5A Niagara
6A Oneida
5A Onondaga
5A Ontario
5A Orange
5A Orleans
5A Oswego
6A Otsego
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
5A Putnam
4A Queens
5A Rensselaer
4A Richmond
5A Rockland
5A Saratoga
5A Schenectady
6A Schoharie
6A Schuyler
5A Seneca
6A Steuben
6A St. Lawrence
4A Suffolk
6A Sullivan
5A Tioga
6A Tompkins
6A Ulster
6A Warren
5A Washington
5A Wayne
4A Westchester
6A Wyoming
5A Yates
NORTH
CAROLINA
4A Alamance
4A Alexander
5A Alleghany
3A Anson
5A Ashe
5A Avery
3A Beaufort
4A Bertie
3A Bladen
3A Brunswick*
4A Buncombe
4A Burke
3A Cabarrus
4A Caldwell
3A Camden
3A Carteret*
4A Caswell
4A Catawba
4A. Chatham
4A Cherokee
3A Chowan
4A Clay
4A Cleveland
3A Columbus*
3A Craven
3A Cumberland
3A Currituck
3A Dare
3A Davidson
4A Davie
3A Duplin
4A Durham
3A Edgecombe
4A Forsyth
4A Franklin
3A Gaston
4A Gates
4A Graham
4A Granville
3A Greene
4A Guilford
4A Halifax
4A Harnett
4A Haywood
4A Henderson
4A Hertford
3A Hoke
3A Hyde
4A Iredell
4A Jackson
3A Johnston
3A Jones
4A Lee
3A Lenoir
4A Lincoln
4A Macon
(continued)
4A Madison
3A Martin
4A McDowell
3A Mecklenburg
5A Mitchell
3A Montgomery
3A Moore
4A Nash
3A New Hanover*
4A Northampton
3A Onslow*
4A Orange
3A Pamlico
3A Pasquotank
3A Pender*
3A Perquimans
4A Person
3A Pitt
4A Polk
3A Randolph
3A Richmond
3A Robeson
4A Rockingham
3A Rowan
4A Rutherford
3A Sampson
3A Scotland
3A Stanly
4A Stokes
4A Surry
4A Swain
4A Transylvania
3A Tyrrell
3A Union
4A Vance
4A Wake
4A Warren
3A Washington
5A Watauga
3A Wayne
4A Wilkes
3A Wilson
4A Yadkin
5A Yancey
NORTH DAKOTA
6A Adams.
7 Barnes
7 Benson
6A Billings
7 Bottineau
6A Bowman
7 Burke
6A Burleigh
7 Cass
7 Cavalier
6A Dickey
7 Divide
6A Dunn
7 Eddy
6A Emmons
7 Foster
6A Golden Valley
7 Grand Forks
6A Grant
7 Griggs
6A Hettinger
7 Kidder
6A LaMoure
6A Logan
7 McHenry
6A McIntosh
6A McKenzie
7 McLean
6A Mercer
6A Morton
7 Mountrail
7 Nelson
6A Oliver
7 Pembina
7 Pierce
7 Ramsey
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
19
GENERAL REQUIREMENTS
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
6A Ransom
5A Fairfield
5A Perry
3A Coal
3A Okmulgee
7 Renville
5A Fayette
5A Pickaway
3A Comanche
3A Osage
6A Richland
5A Franklin
4A Pike
3A Cotton
3A Ottawa
7 Rolette
5A Fulton
5A Portage
3A Craig
3A Pawnee
6A Sargent
4A Gallia
5A Preble
3A Creek
3A Payne
7 Sheridan
5A Geauga
5A Putnam
3A Custer
3A Pittsburg
6A Sioux
5A Greene
5A Richland
3A Delaware
3A Pontotoc
6A Slope
5A Guernsey
5A Ross
3A Dewey
3A Pottawatomie
6A Stark
4A Hamilton
5A Sandusky
3A Ellis
3A Pushmataha
7 Steele
5A Hancock
4A Scioto
3A Garfield
3A Roger Mills
7 Stutsman
5A Hardin
SA Seneca
3A Garvin
3A Rogers
7 Towner
5A Harrison
5A Shelby3A
Grad y
3A Seminole
7 Traill
5A Henry
SA Stark
3A Grant
3A Sequoyah
7 Walsh
5A Highland
5A Summit
3A Greer
3A Stephens
7 Ward
5A Hocking
5A Trumbull
3A Harmon
4B Texas
7 Wells
5A Holmes
5A T uscarawas
3A Harper
3A Tillman
7 Williams
SA H
Huron
SA Union
3A Haskell
3A Tulsa
OHIO
SA Jackson
SA Van Wert
3A Hughes
3A Wagoner
4A Adams
SA Jefferson
SA Vinton
3A Jackson
3A Washington
SA Allen
SA Knox
SA Warren
3A Jefferson
3A Washita
5A Ashland
SA Lake
4A Washington
3A Johnston
3A Woods
5A Ashtabula
4A Lawrence
5A Wayne
3A Ka
3A Woodward
SA Athens
5A Licking
SA Williams
3A Kingfisher
�
5A Auglaize
SA Logan
5A Wood
3A Kiowa
OREGON
5A Belmont
5A Lorain
5A Wyandot
3A Latimer
Baker
SA Lucas
3A Le Flore
4C Benton
4A Brown
5A Madison
OKLAHOMA
3A Lincoln
4C Clackamas
SA Butler
5A Mahoning
3A Adair
3A Loan
4C Clatsop
5A Carroll
5A Marion
3A Alfalfa
3A
3A Love
4C Columbia
SA Champaign
5A Medina
3A Atoka
3A Major
4C Coos
5A Clark
5A Meigs
4B Beaver
3A Marshall
5B Crook
4A Clermont
5A Mercer
3A Beckham
3A Mayes
4C Curry
5A Clinton
5A Miami
3A Blaine
3A McClain
5B Deschutes
5A Columbiana
5A Monroe
3A Bryan
3A McCurtain
4C Douglas
5A Coshocton
5A Montgomery
3A Caddo
3A McIntosh
5B Gilliam
5A Crawford
5A Morgan
3A Canadian
3A Murray
5B Grant
5A Cuyahoga
5A Morrow
3A Carter
3A Muskogee
5B Harney
5A Darke
5A Muskingum
3A Cherokee
3A Noble
5B Hood River
5A Defiance
5A Noble
3A Choctaw
3A Nowata
4C Jackson
5A Delaware
5A Ottawa
4B Cimarron
3A Okf iskee
5B Jefferson
5A Erie
5A Paulding
3A Cleveland
3A Oklahoma
4C Josephine
(continued)
20
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
GENERAL REQUIREMENTS
5B Klamath
5B Lake
4C Lane
4C Lincoln
4C Linn
5B Malheur
4C Marion
5B Morrow
4C Multnomah
4C Polk
5B Sherman
4C Tillamook
5B Umatilla
5B Union
5B Wallowa
5B Wasco
4C Washington
5B Wheeler
4C Yatnhill
PENNSYLVANIA
5A Adams
5A Allegheny
5A Armstrong
5A Beaver
5A Bedford
5A Berks
5A Blair
5A Bradford
4A Bucks
5A Butler
5A Cambria
6A Cameron
5A Carbon
5A Centre
4A Chester
5A Clarion
6A Clearfield
5A Clinton
5A Columbia
5A Crawford
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
5A Cumberland
5A Dauphin
4A Delaware
6A Elk
5A Erie
5A Fayette
5A Forest
5A Franklin
5A Fulton
5A Greene
5A Huntingdon
5A Indiana
5A Jefferson
5A Juniata
5A Lackawanna
5A Lancaster
5A Lawrence
5A Lebanon
5A Lehigh
5A Luzeme
5A Lycoming
6A McKean
5A Mercer
5A Mifflin
5A Monroe
4A Montgomery
5A Montour
5A Northampton
5A Northumberland
5A Perry
4A Philadelphia
5A Pike
6A Potter
5A Schuylkill
5A Snyder
5A Somerset
5A Sullivan
6A Susquehanna
6A Tioga
5A Union
5A Venango
5A Warren
5A Washington
6A Wayne
5A Westmoreland
5A Wyoming
4A York
RHODE ISLAND
5A (all)
SOUTH
CAROLINA
3A Abbeville
3A Aiken
3A Allendale*
3A Anderson
3A Bamberg*
3A Barnwell*
3A Beaufort*
3A Berkeley*
3A Calhoun
3A Charleston*
3A Cherokee
3A Chester
3A Chesterfield
3A Clarendon
3A Colleton*
3A Darlington
3A Dillon
3A Dorchester*
3A Edgefield
3A Fairfield
3A Florence
3A Georgetown*
3A Greenville
3A Greenwood
3A Hampton*
3A Horry*
3A Jasper*
3A Kershaw
3A Lancaster
3A Laurens
(continued)
3A Lee
3A Lexington
3A Marion
3A Marlboro
3A McCormick
3A Newberry
3A Oconee
3A Orangeburg
3A Pickens
3A Richland
3A Saluda
3A Spartanburg
3A Sumter
3A Union
3A Williamsburg
3A York
SOUTH DAKOTA
6A Aurora
6A Beadle
5A Bennett
5A Bon Homme
6A Brookings
6A Brown
6A Brute
6A Buffalo
6A Butte
6A Campbell
5A Charles Mix
6A Clark
5A Clay
6A Codington
6A Corson
6A Custer
6A Davison
6A Day
6A Deuel
6A Dewey
5A Douglas
6A Edmunds
6A Fall River
6A Faulk
6A Grant
5A Gregory
6A Haakon
6A Hamlin
6A Hand
6A Hanson
6A Harding
6A Hughes
5A, Hutchinson
6A Hyde
5A Jackson
6A Jerauld
6A Jones
6A Kingsbury
6A Lake
6A Lawrence
6A Lincoln
6A Lyman
6A Marshall
6A McCook
6A McPherson
6A Meade
5A Mellette
6A Miner
6A Minnehaha
6A Moody
6A Pennington
6A Perkins
6A Potter
6A Roberts
6A Sanborn
6A Shannon
6A Spink
6A Stanley
6A Sully
5A Todd
5A Tripp
6A Turner
5A Union
6A Walworth
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 21
GENERAL REQUIREMENTS
5A Yankton
6A Ziebach
4A Anderson
4A Bedford
4A Benton
4A Bledsoe
4A Blount
4A Bradley
4A Campbell
4A Cannon
4A Carroll
4A Carter
4A Cheatham
3A Chester
4A Claiborne
4A Clay
4A Cocke
4A Coffee
3A Crockett
4A Cumberland
4A Davidson
4A Decatur
4A DeKalb
4A Dickson
3A Dyer
3A Fayette
4A Fentress
4A Franklin
4A Gibson
4A Giles
4A Grainger
4A Greene
4A Grundy
4A Hamblen
4A Hamilton
4A Hancock
3A Hardeman
3A Hardin
4A Hawkins
TABLE 301.1--continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
3A Haywood
3A Henderson
4A Henry
4A Hickman
4A Houston
4A Humphreys
4A Jackson
4A Jefferson
4A Johnson
4A Knox
3A Lake
3A Lauderdale
4A Lawrence
4A Lewis
4A Lincoln
4A Loudon
4A Macon
3A Madison
4A Marion
4A Marshall
4A Maury
4A McMinn
3A McNairy
4A Meigs
4A Monroe
4A Montgomery
4A Moore
4A Morgan
4A Obion
4A Overton
4A Perry
4A Pickett
4A Polk
4A Putnam
4A Rhea
4A Roane
4A Robertson
4A Rutherford
4A Scott
4A Sequatchie
4A Sevier
3A Shelby
4A Smith
4A Stewart
4A Sullivan
4A Sumner
3A Tipton
4A Trousdale
4A Unicoi
4A Union
4A Van Buren
4A Warren
4A Washington
4A Wayne
4A Weakley
4A White
4A Williamson
4A Wilson
TEXAS
2A Anderson*
3B Andrews
2A Angelina*
2A Aransas*
3A Archer
4B Armstrong
2A Atascosa*
2A Austin*
4B Bailey
2B Bandera*
2A Bastrop*
3B Baylor
2A Bee*
2A Bell*
2A Bexar*
3A Blanco*
39 Borden
2A Bosque*
3A Bowie*
2A Brazoria*
2A Brazos*
3B Brewster
(continued)
4B Briscoe
2A Brooks*
3A Brown*
2A Burleson*
3A Bumet*
2A Caldwell*
2A Calhoun*
3B Callahan
2A Cameron*
3A Camp*
4B Carson
3A Cass*
4B Castro
2A Chambers*
2A Cherokee*
3B Childress
3A Clay
4B Cochran
3B Coke
3B Coleman
3A Collin*
3B Collingsworth
2A Colorado*
2A Coma?
3A Comanche*
3B Concho
3A Cooke
2A Coryell*
3B Cottle
3B Crane
3B Crockett
3B Crosby
3B Culberson
4B Dallam
3A Dallas*
3B Dawson
4B Deaf Smith
3A Delta
3A Denton*
2A DeWitt*
3B Dickens
2B Dimmit*
4B Donley
2A Duval*
3A Eastland
3B Ector
2B Edwards*
3A Ellis*
3B El Paso
3A Erath*
2A Falls*
3A Fannin
2A Fayette*
3B Fisher
4B Floyd
3B Foard
2A Fort Bend*
3A Franklin*
2A Freestone*
2B Frio*
3B Gaines
2A Galveston*
3B Garza
3A Gillespie*
3B Glasscock
2A Goliad*
2A Gonzales*
4B Gray
3A Grayson
3A Gregg*
2A Grimes*
2A Guadalupe*
4B Hale
3B Hall
3A Hamilton*
4B Hansford
3B Hardeman
2A Hardin*
2A Harris*.
3A Harrison*
4B Hartley
3B Haskell
22 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
GENERAL REQUIREMENTS
2A Hays*
3B Hemphill
3A Henderson*
2A Hidalgo*
2A Hill*
4B Hockley
3A Hood*
3A Hopkins*
2A Houston*
3B Howard
3B Hudspeth
3A Hunt*
4B Hutchinson
3B Irion
3A Jack
2A Jackson*
2A Jasper*
3B Jeff Davis
2A Jefferson*
2A Jim Hogg*
2A Jim Wells*
3A Johnson*
3B Jones
2A Kames*
3A Kaufman*
3A Kendall*
2A Kenedy*
3B Kent
3B Kerr
3B Kimble
3B King
2B Kinney*
2A Kleberg*
3B Knox
3A Lamar*
4B Lamb
3A Lampasas*
2B La Salle*
2A Lavaca*
2A Lee*
2A Leon*
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
2A Liberty*
2A Limestone*
4B Lipscomb
2A Live Oak*
3A Llano*
3B Loving
3B Lubbock
3B Lynn
2A Madison*
3A Marion*
3B Martin
3B Mason
2A Matagorda*
2B Maverick*
3B McCulloch
2A McLennan*
2A McMullen*
2B Medina*
3B Menard
3B Midland
2A Milam*
3A Mills*
3B Mitchell
3A Montague
2A Montgomery*
4B Moore
3A Morris*
3B Motley
3A Nacogdoches*
3A Navarro*
2A Newton*
3B Nolan
2A Nueces*
4B Ochiltree
4B Oldham
2A Orange*
3A Palo Pinto*
3A Panola*
3A Parker*
4B Parmer
3B Pecos
2A Polk*
4B Potter
3B Presidio
3A Rains*
4B Randall
3B Reagan
2B Real*
3A Red River*
3B Reeves
2A Refugio*
4B Roberts
2A Robertson*
3A Rockwall*
3B Runnels
3A Rusk*
3A Sabine*
3A San Augustine*
2A San Jacinto*
2A San Patncio*
3A San Saba*
3B Schleicher
3B Scurry
3B Shackelford
3A Shelby*
4B Sherman
3A Smith*
3A Somervetl*
2A Starr*
3A Stephens
3B Sterling
3B Stonewall
3B Sutton
4B Swisher
3A Tarrant*
3B Taylor
3B Terrell
3B Terry
3B Throckmorton
3A Titus*
3B Tom Green
2A Travis*
(continued)
2A Trinity*
2A Tyler*
3A Upshur*
3B Upton
2B Uvalde*
2B Val Verde*
3A Van Zandt*
2A Victoria*
2A Walker*
2A Waller*
3B Ward
2A Washington*
2B Webb*
2A Wharton*
3B Wheeler
3A Wichita
3B Wilbarger
2A Willacy*
2A Williamson*
2A Wilson*
3B Winkler
3A Wise
3A Wood*
4B Yoakum
3A Young
2B Zapata*
2B Zavala*
UTAH
5B Beaver
6B Box Elder
6B Cache
6B Carbon
6B Daggett
5B Davis
6B Duchesne
5B Emery
5B Garfield
5B Grand
5B Iron
5B Juab
5B Kane
5B Millard
6B Morgan
5B Piute
6B Rich
5B Salt Lake
5B San Juan
5B Sanpete
5B Sevier
6B Summit
5B Tooele
6B Uintah
5B Utah
6B Wasatch
3B Washington
5B Wayne
5B Weber
VERMONT
6A (all)
VIRGINIA
4A (all)
WASHINGTON
5B Adams
5B Asotin
5B Benton
5B Chelan
4C Clallam
4C Clark
5B Columbia
4C Cowlitz
5B Douglas
6B Ferry
5B Franklin
5B Garfield
5B Grant
4C Grays Harbor
4C Island
4C Jefferson
4C King
4C Kitsap
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 23
GENERAL REQUIREMENTS
5B Kittitas
5B Klickitat
4C Lewis
5B Lincoln
4C Mason
6B Okanogan
4C Pacific
6B Pend Oreille
4C Pierce
4C San Juan
4C Skagit
5B Skamania
4C Snohomish
5B Spokane
6B Stevens
4C Thurston
4C Wahkiakum
5B Walla Walla
4C Whatcom
5B Whitman
5B Yakima
WEST VIRGE41A
5A Barbour
4A Berkeley
4A Boone
4A Braxton
5A Brooke
4A Cabell
4A Calhoun
4A Clay
5A Doddridge
5A Fayette
4A Gilmer
5A Grant
5A Greenbrier
5A Hampshire
5A Hancock
5A Hardy
5A Harrison
4A Jackson
4A Jefferson
TABLE 301.1—continued
CLIMATE ZONES, MOISTURE REGIMES, AND WARM -HUMID DESIGNATIONS
BY STATE, COUNTY AND TERRITORY
4A Kanawha
5A Lewis
4A Lincoln
4A Logan
5A Marion
5A Marshall
4A Mason
4A McDowell
4A Mercer
5A Mineral
4A Mingo
5A Monongalia
4A Monroe
4A Morgan
5A Nicholas
5A Ohio
5A Pendleton
4A Pleasants
5A Pocahontas
5A Preston
4A Putnam
5A Raleigh
5A Randolph
4A Ritchie
4A Roane
5A Summers
SA Taylor
5A Tucker
4A Tyler
5A Upshur
4A Wayne
5A Webster
5A Wetzel
4A Wirt
4A Wood
4A Wyoming
WISCONSIN
6A Adams
7 Ashland
6A Barron
7 Bayfield
6A Brown
6A Buffalo
7 Burnett
6A Calumet
6A Chippewa
6A Clark
6A Columbia
6A Crawford
6A Dane
6A Dodge
6A Door
7 Douglas
6A Dunn
6A Eau Claire
7 Florence
6A Fond du Lac
7 Forest
6A Grant
6A Green
6A Green Lake
6A Iowa
7 Iron
6A Jackson
6A Jefferson
6A Juneau
6A Kenosha
6A Kewaunee
6A La Crosse
6A Lafayette
7 Langlade
7 Lincoln
6A Manitowoc
6A Marathon
6A Marinette
6A Marquette
6A Menominee
6A Milwaukee
6A Monroe
6A Oconto
7 Oneida
6A Outagamie
6A Ozaukee
6A Pepin
6A Pierce
6A Polk
6A Portage
7 Price
6A Racine
6A Richland
6A Rock
6A Rusk
6A Sauk
7 Sawyer
6A Shawano
6A Sheboygan
6A St. Croix
7 Taylor
6A Trempealeau
6A Vernon
7 Vilas
6A Walworth
7 Washburn
6A Washington
6A Waukesha
6A Waupaca
6A Waushara
6A Winnebago
6A Wood
WYOMING
6B Albany
6B Big Hom
6B Campbell
6B Carbon
6B Converse
6B Crook
6B Fremont
5B Goshen
6B Hot Springs
6B Johnson
6B Laramie
7 Lincoln
6B Natrona
6B Niobrara
6B Park
5B Platte
6B Sheridan
7 Sublette
6B Sweetwater
7 Teton
6B Uinta
6B Washakie
6B Weston
US
TERRITORIES
AMERICAN
SAMOA
lA (all)*
GUAM
IA (all)*
NORTHERN
MARIANA
ISLANDS
IA (all)*
PUERTO RICO
IA (all)*
VIRGINISLANDS
IA (all)*
24
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
GENERAL REQUIREMENTS
TABLE 301.3(1)
INTERNATIONAL CLIMATE ZONE DEFINITIONS
MAJOR CLIMATE TYPE DEFINMONS
Marine (C) Definition —Locations meeting all four criteria:
1. Mean temperature of coldest month between -3°C (27°F) and 18°C (65°F)
2. Warmest month mean < 22°C (72°F)
3. At least four months with mean temperatures over 10°C (50°F)
4. Dry season in summer. The month with the heaviest precipitation in the cold season has at least three times as much precipita-
tion as the month with the least precipitation in the rest of the year. The cold season is October through March in the Northern
Hemisphere and April through September in the Southern Hemisphere.
Dry (B) Definition —Locations meeting the following criteria: Not marine and
P;,,<0.44x(TF-19.5) [Pn„<2.0x(TC+7)inSIunits)
where:
P„ = Annual precipitation in inches (cm)
T = Annual mean temperature in °F (°C)
Moist (A) Definition —Locations that are not marine and not dry.
Warm -humid Definition —Moist (A) locations where either of the following wet -bulb temperature conditions shall occur during the warmest
six consecutive months of the year:
1. 67°F (19.4°C) or higher for 3,000 or more hours; or
2. 73°F (22.8°C) or higher for 1,500 or more hours
For SI: °C = [(°F)-32yL8; 1 inch = 2.54 cm.
TABLE 301.3(2)
INTERNATIONAL CLIMATE ZONE DEFINITIONS
ZONE
NUMBER
THERMAL CRITERIA
IP Units
SI Units
1
9000<CDD50°F
5000<CDD10°C
2
6300 < CDD50°F <_ 9000
3500 < CDD10°C 5 5000
3A and 3B
- -
4500 < CDD50°F < 6300
AND HDD65°F <_ 5400
2500 < CDD10°C <_ 3500
AND HDD18°C 5 3000
4A and 4B
CDD50°F 5 4500 AND
HDD65017<_5400
CDD 10°C 5 2500 AND
HDD180C<3000
3C
HDD65°F <_ 3600
HDD180C <_ 2000
4C
3600 < HDD65°17< 5400
2000 < HDD18°C <_ 3000
5
5400 < HDD65°F < 7200
3000 < HDD18°12<_ 4000
6
7200 < HDD65°F < 9000
4000 < HDD 18°C <_ 5000
7
9000 < HDD65°F < 12600
5000 < HDD 18°C <_ 7000
8
12600<HDD65°F
7000<HDD18°C
For SI: °C = [(°F)-32]/L8
SECTION 302
DESIGN CONDITIONS
302.1 Interior design conditions. The interior design temper-
atures used for heating and cooling load calculations shall be a
maximum of 72°F (22°C) for heating and minimum of 75°F
(24°C) for cooling.
SECTION 303
MATERIALS, SYSTEMS AND EQUIPMENT
303.1 Identification. Materials, systems and equipment shall
be identified in a manner that will allow a determination of
compliance with the applicable provisions of this code.
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 25
GENERAL
303.1.1 Building thermal envelope insulation. An R-value
identification mark shall be applied by the manufacturer to
each piece of building thermal envelope insulation 12
inches (305 mm) or greater in width. Alternately, the insula-
tion installers shall provide a certification listing the type,
manufacturer and R-value of insulation installed in each ele-
ment of the building. thermal envelope. For blown or
sprayed insulation (fiberglass and cellulose), the initial
installed thickness, settled thickness, settled R-value,
installed density, coverage area and number of bags
installed shall be listed on the certification. For sprayed
polyurethane foam (SPF) insulation, the installed thickness
of the areas covered and R-value of installed thickness shall
be listed on the certification. The insulation installer shall
sign, date and post the certification in a conspicuous loca-
tion on the job site.
303.1.1.1 Blown or sprayed roof/ceiling insulation.
The thickness of blown -in or sprayed roof/ceiling insula-
tion (fiberglass or cellulose) shall be written in inches
(mm) on markers that are installed at least one for every
300 square feet (28 mz) throughout the attic space. The
markets shall be affixed to the trusses or joists and
marked with the minimum initial installed thickness with
numbers a minimum of 1 inch (25 mm) in height. Each
marker shall face the attic access opening. Spray poly-
urethane foam thickness and installed R-value shall be
listedon certification provided by the insulation installer.
303.1.2 Insulation mark installation. Insulating materials
shall be installed such that the manufacturer's R-value mark
is readily observable upon inspection.
303.1.3 Fenestration product rating. U-factors of fenes-
tration products (windows, doors and skylights) shall be
determined in accordance with NFRC 100 by an accredited,
independent laboratory, and labeled and certified by the
manufacturer. Products lacking such a labeled U-factor
shall be assigned a default U-factor from Table 303.1.3(1)
or 303.1.3(2). The solar heat gain coefficient (SHGC) of
glazed fenestration products (windows, glazed doors and
skylights) shall be determined in accordance with NFRC
200 by an accredited, independent laboratory, and labeled
and certified by the manufacturer. Products lacking such a
labeled SHGC shall be assigned a default SHGC from Table
303.1.3(3).
TABLE 303.1.3(1)
DEFAULT GLAZED FENESTRATION U-FACTOR
FRAME TYPE
SINGLE
PANE
DOUBLE
PANE
SKYLIGHT
Single
Double
Metal
1.20
0.80
2.00
1.30
Metal with Thermal Break
1.10
0.65
1.90
L10
Nonmetal or Metal Clad
0.95
0.55
1.75
1.05
Glazed Block
1 0.60
TABLE 303.1.3(2)
DEFAULT DOOR U-FACTORS
DOOR TYPE
U-FACTOR
Uninsulated Metal
1.20
Insulated Metal
0.60
Wood
0.50
Insulated, nonmetal edge, max 45% glazing,
any glazing double pane
0.35
TABLE 303.1.3(3)
DEFAULT GLAZED FENESTRATION SHGC
SINGLE GLAZED
DOUBLE I I I ,
GLAZED BLOCK
Clear
Tinted
Clear
1 1 iited
0.8
0.7
0.7
1 0.6
1 0.6
303.1.4 Insulation product rating. The thermal resistance
(R-value) of insulation shall be determined in accordance
with the U.S. Federal Trade Commission R-value rule (CFR
Title 16, Part 460, May 31, 2005) in units of h x ftz x °F/Btu
at a mean temperature of 75OF (240C).
303.2Installation. All materials, systems and equipment shall
be installed in accordance with the manufacturer's installation
instructions and the International Building Code.
303.2.1 Protection of exposed foundation insulation.
Insulation applied to the exterior of basement walls, crawl -
space walls and the perimeter of slab -on -grade floors shall
have a rigid, opaque and weather -resistant protective cover-
ing to prevent the degradation of the insulation's thermal
performance. The protective covering shall cover the
exposed exterior insulation and extend a minimum of 6
inches (153 mm) below grade.
303.3 Maintenance information. Maintenance instructions
shall be furnished for equipment and systems that require pre-
ventive maintenance. Required regular maintenance actions
shall be clearly stated and incorporated on a readily accessible
label. The label shall include the title or publication number for
the operation and maintenance manual for that particular
model and type of product.
i
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
CHAPTER 4
RESIDENTIAL BUILDING DESIGN BY SYSTEMS ANALYSIS AND DESIGN OF
BUILDINGS UTILIZING RENEWABLE ENERGY SOURCES
* Delete Section 402.2.3.1.3 FENESTRATION SYSTEM SOLAR HEAT GAIN
COEFFICIENT, STANDARD DESIGN without substitution.
City of Fayetteville
Building Safety Division
113 W. Mountain St.
CHAPTER 4 Fayetteville, AR 72701
RESIDENTIAL ENERGY EFFICIENCY
SECTION 401
GENERAL
401.1 Scope. This chapter applies to residential buildings
401.2 Compliance. Projects shall comply with Sections 401,
402.4, 402.5, and 403.1, 403.2.2, 403.2.3, and 403.3 through
403.9 (referred to as the mandatory provisions) and either:
1. Sections 402.1 through 402.3, 403.2.1 and 404.1 (pre-
scriptive); or .
2. Section 405 (performance).
401.3 Certificate. A permanent certificate shall be posted on or
in the electrical distribution panel. The certificate shall not cover
or obstruct the visibility of the circuit directory label, service dis-
connect label or other required labels. The certificate shall be
completed by the builder or registered design professional. The
certificate shall list the predominant R-values of insulation
installed in or on ceilinghoof, walls, foundation (slab, basement
wall, crawlspace wall and/or floor) and ducts outside condi-
tioned spaces; 11-factors for fenestration and the solar heat gain
coefficient (SHGC) of fenestration. Where there is more than one
value for each component, the certificate shall list the value cover-
ing the largest area The certificate shall list the types and efficien-
cies of heating, cooling and service water heating equipment
Where a gas -fired unvented room heater, electric furnace, or base-
board electric heater is installed in the residence, the certificate
shall list "gas -fired unvented room heater," "electric furnace" or
"baseboard electric heater," as appropriate. An efficiency shall not
be listed for gas -fired unvented room heaters, electric furnaces or
electric baseboard heaters.
SECTION 402
BUILDING THERMAL ENVELOPE
402.1 General (Prescriptive).
402.1.1 Insulation and fenestration criteria. The building
thermal envelope shall meet the requirements of Table
402.1.1 based on the climate zone specified in Chapter 3.
402.1.2 R-value computation. Insulation material used in
layers, suchas framing cavity insulation and insulating
sheathing, shall be summed to compute the component
R-value. The manufacturer's settled R-value shall be used
for blown insulation. Computed R-values shall not include
an R-value for other building materials or air films.
TABLE 402.1.1
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT'
CRAWL
GLAZED
WOOD
MASS
BASEMENT`
SLAB°
SPACE`
CLIMATE
FENESTRATION
SKYLIGHT°
FENESTRATION
CEILING
FRAME WALL
WALL
FLOOR
WALL
R-VALUE
WALL
ZONE
LLFACTORh
aFACTOR
SHGCb•e
R-VALUE
R-VALUE
R-VALUE'
&VALUE
R-VALUE
&DEPTH
R-VALUE
1
1.2
0.75
0.30
30
13
314
13
0
0
0
2
0.65i
0.75
0.30
30
13
4/6
13
0
0
0
3
0.50i
0.65
0.30
30
13
5/8
19
5/131
0
5/13
4except
0.35
0.60
NR
38
13
5110
19
10/13
10,2It
10/13
Marine
5 and
0.35
0.60
NR
38
20 or 13+51
13117
309
10/13
10, 2 It
10/13
Marine 4
6
0.35
0.60
NR
49
20 or 13+Sh
15119
309
15/19
10, 4 h
10113
7 and 8
0.35
0.60
NR
49
21
19/21
389
15/19
10, 4 ft
10/13
For SI: I foot = 304.8 mm.
a. R-values areminimums. U-factors and SHGC are maximums.R-19 baascumpressed into a nominal 2 x 6 fmmingcavity such thattheR-valueis reducedby R-I or
more shall be marked with the compressed baltR-value in addition to the full thickness R-value.
b: The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration.
a "15/19"means R-15 continuous insulated sheathing onthe interior or exterior of the home or R- 19 cavity insulation at the interior of the basement wall."15/l9"
shall be permitted to be met with R-13 cavity insulation on the interior of the basement wall plus R-5 continuous insulated sheathing on the interior m exterior of the
home. "10/13" means R-10 continuous insulated sheathing on the interior or exterior of the home or R-13 cavity insu lation at the interior of the basement wall.
d. R-5 shall be added to the required slab edge R-values for heated slabs. Insulation depth shall be the depth of the footing or 2 feet, whichever is less in Zones I
through 3 for heated slabs.
e. There are no SHGC requirements in the Marine Zone.
I. Basement wall insulation is not required in warm -humid locations as defined by Figure 301.1 and Table 301.1.
g. Or insulation sufficient to fill the framing cavity, R-19 minimum.
It. "13+5" means R-13 cavity insulation plus R-5 insulated sheathing. If structural sheathing covers 25 percent or less of the exterior, insulating sheathing is not
required where structural sheathing is used. If structural sheathing covers more than 25 percent of exterior, structural sheathing shall be supplemented with insu-
lated sheathing of at least R-2.
i. The second R-value applies when more than half the insulation is on the interior of the mass wall.
j. For impactrated fenestrationcomplying with SectionR301.2.1.2ofthe/nternationalResidential CodeorSection 1609.1.2oftheinlermuionalBuilding Code, the
maximum U-factor shall be 0.75 in Zone 2 and 0.65 in Zone 3.
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 27
RESIDENTIAL ENERGY EFFICIENCY
TABLE 402.1.3
EQUIVALENT U-FACTORS°
CLIMATE
ZONE
FENESTRATION
U-FACTOR
SKYLIGHT
U-FACTOR
CEILING
tl-FACTOR
FRAME
WALL
U-FACTOR
MASS WALL
U-FACTOR^
FLOOR
U•FACTOR
BASEMENT
WALL
U-FACTOR
CRAWL
SPACE
WALL
U-FACTOW
1
1.20
0.75
0.035
0.082
0.197
0.064
0.360
0.477
2
0.65
0.75
0.035
0.082
0.165
0.064
0.360
0.477
3
0.50
0.65
0.035
0.082
0.141
0.047
0.091°
0.136
4 except Marine
0.35
0.60
0.030
0.082
0.141
0.047
0.059
0.065
5 and Marine 4
0.35
0.60
0.030
0.057
0.082
0.033
0.059
0,065
6
0.35
0.60
0,026
0.057
0.060
0.033
0.050
0.065
7 and 8
0.35
0.60
0.026
0.057
0.057
0.028
0.050
0.065
a. Nonfenesuation U-factors shall be obtained from measurement, calculation or an approved source.
' b. When more than half the insulation is on the interior, the mass will U-factors shall be a maximumof 0. 17 in Zone 1,0.14 in Zone2,0.12 in Zone 3, 0.10 in Zone4
except Marine, and the same as the frame wall U-factor in Marine Zone 4 and Zones 5 through 8.
c. Basement wall U-factor of 0.360 in warm -humid locations as defined by Figure 301.1 and Table 301.1.
402.1.3 U-factor alternative. An assembly with a U-fac-
for equal to or less than that specified in Table 402.1.3 shall
be permitted as an alternative to the R-value in Table
402.1.1.
402.1.4 Total UA alternative. If the total building thermal
envelope UA (sum of U-factor times assembly area) is less
than or equal to the total UA resulting from using the
U-factors in Table 402.1.3 (multiplied by the same assem-
bly area as in the proposed building), the building shall be
considered in compliance with Table 402,1.1. The UA cal-
culation shall be done using a method consistent with the
ASHRAE Handbook of Fundamentals and shall include
the thermal bridging effects of framing materials. The
SHGC requirements shall be met in addition to UA com-
pliance.
402.2 Specific insulation requirements (Prescriptive).
402.2.1 Ceilings with attic spaces. When Section 402.1.1
would require R-38 in the ceiling, R-30 shall be deemed to
satisfy the requirement for R-38 wherever the full height of
uncompressed R-30 insulation extends over the wall top
plate at the eaves. Similarly, R-38 shall be deemed to satisfy
the requirement for R-49 wherever the full height of uncom-
pressed R-38 insulation extends over the wall top plate at the
eaves. This reduction shall not apply to the U-factor altema-
five approach in Section 402.1.3 and the total UA alternative
in Section 402.1.4.
402.2.2 Ceilings without attic spaces. Where Section
402.1.1 would require insulation levels above R-30 and the
design of the roof/ceiling assembly does not allow sufficient
space for the required insulation, the minimum required
insulation for such roof/ceiling assemblies shall be R-30.
This reduction of insulation from the requirements of Sec-
tion 402.1.1 shall be limited to 500 square feet (46 mz) or 20
percent of the total insulated ceiling area, whichever is less.
This reduction shall not apply to the U-factor alternative
approach in Section 402.1.3 and the total UA alternative in
Section 402.1.4.
402.2.3 Access hatches and doors. Access doors from
conditioned spaces to unconditioned spaces (e.g., attics
and crawl spaces) shall be weatherstripped and insulated to
a level equivalent to the insulation on the surrounding sur-
faces. Access shall be provided to all equipment that pre-
vents damaging or compressing the insulation. A wood
framed or equivalent baffle or retainer is required to be
provided when loose fill insulation is installed, the purpose
of which is to prevent the loose fill insulation from spilling
into the living space when the attic access is opened, and to
provide a permanent means of maintaining the installed
R-value of the loose fill insulation.
402.2.4 Mass walls. Mass walls for the purposes of this
chapter shall be considered above -grade walls of concrete
block, concrete; insulated concrete form (ICF), masonry
cavity, brick (other than brick veneer), earth (adobe, com-
pressed earth block, rammed earth) and solid timber/logs.
402.2.5 Steel -frame ceilings, walls, and floors. Steel -
frame ceilings, walls and floors shall meet the insulation
requirements of Table 402.2.5 or shall meet the U-factor
requirements in Table 402.1.3. The calculation of the U-fac-
tor for a steel -frame envelope assembly shall use a series -
parallel path calculation method.
Exception: In Climate Zones 1 and 2, the continuous
insulation requirements in Table 402.2.5 shall be permit -
led to be reduced to R-3 for steel frame wall assemblies!
with studs spaced at 24 inches (610 mm) on center. l .
28 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL ENERGY EFFICIENCY
TABLE 402.2.5
STEEL -FRAME CEILING, WALL AND FLOOR INSULATION
(R-VALUE)
WOOD FRAME
R-VALUE
REQUIREMENT
COLD -FORMED STEEL
EQUIVALENT R-VALUE'
Steel Truss Ceilings b
R-30
R-38 or R-30 + 3 or R-26 + 5
R-38
R-49 or R-38 + 3
R49
R-38 + 5
Steel Joist Ceilings b
R-30
R-38 in 2 x 4 or 2 x 6 or 2 x 8
R-49 in any framing
R-38
R49in2x4or2x6or2x8or2x10
Steel -Framed Wail
R-13
R-13+5orR-15+4orR-21+3orR-0+10
R-19
R-13 + 9 or R-19 + 8 or R-25 + 7
R-21
R-13 + 10 or R-19 + 9 or R-25 + 8
Steel Joist Floor
R-13
R-.19in2x6
R-19 + 6 in 2 x 8 or 2 x 10
R-19
R-19+6in2x6
R-19 + 12 in 2 x 8 or 2 x 10
a. Cavity insulation R-value is listed first, followed by continuous insulation
R-value.
b. Insulation exceeding the height of the framing shall Cover the framing.
402.2.6 Floors. Floor insulation shall be installed to main-
tain permanent contact with the underside of the subfloor
decking.
402.2.7 Basement walls. Walls associated with conditioned
basements shall be insulated from the top of the basement
wall down to 10 feet (3048 mm) below grade or to the base-
ment floor, whichever is less. Walls associated with uncon-
ditioned basements shall meet this requirement unless the
floor overhead is insulated in accordance with Sections
402.1.1 and 402.2.6.
402.2.8 Slab -on -grade floors. Slab -on -grade floors with a
floor surface less than 12 inches (305 mm) below grade
shall be insulated in accordance with Table 402.1.1. The
insulation shall extend downward from the top of the slab on
the outside or inside of the foundation wall. Insulation
located below grade shall be extended the distance provided
in Table 402.1.1 by any combination of vertical insulation,
insulation extending under the slab or insulation extending
out from the building. Insulation extending away from the
building shall be protected by pavement or by a minimum of
10 inches (254 mm) of soil. The top edge of the insulation
installed between the exterior wall and the edge of the inte-
rior slab shall be permitted to be cut at a 45-degree (0.79 rad)
angle away from the exterior wall. Slab -edge insulation is
not required in jurisdictions designated by the code official
as having a very heavy termite infestation.
402.2.9 Crawl space walls. As an alternative to insulating
floors over crawl spaces, crawl space walls shall be permit-
ted to be insulated when the crawl space is not vented to the
outside. Crawl space wall insulation shall be permanently
fastened to the wall and extend downward from the floor to
the finished grade level and then vertically and/or horizon-
tally for at least an additional 24 inches (610 ram). Exposed
earth in unvented crawl space foundations shall be covered
with a continuous Class I vapor retarder in accordance with
the International Building Code. All joints of the vapor
retarder shall overlap by 6 inches (153 mm) and be sealed or
taped. The edges of the vapor retarder shall extend at least 6
inches (153 mm) up the stem wall and shall be attached to
the stem wall.
402.2.10 Masonry veneer. Insulation shall not be required
on the horizontal portion of the foundation that supports a
masonry veneer.
402.2.11 Thermally isolated sunroom insulation. The
minimum ceiling insulation R-values shall be R-19 in Zones
1 through 4 and R-24 in Zones 5 through 8. The minimum
wall R-value shall be R-13 in all zones. New wall(s) separat-
ing a sunroom from conditioned space shall meet the build-
ing thermal envelope requirements.
402.3 Fenestration. (Prescriptive).
402.3.1 U-factor. An area -weighted average of fenestration
products shall be permitted to satisfy the U-factor require-
ments.
402.3.2 Glazed fenestration SHGC. An area -weighted
average of fenestration products more than 50 percent
glazed shall be permitted to satisfy the SHGC requirements.
402.3.3 Glazed fenestration exemption. Up to 15 square
feet (1.4 mz) of glazed fenestration per dwelling unit shall be
permitted to be exempt from U-factor and SHGC require-
ments in Section 402.1.1. This exemption shall not apply to
the U-factor alternative approach in Section 402.1.3 and the
Total UA alternative in Section 402.1.4.
402.3.4 Opaque door exemption. One side -hinged opaque
door assembly up to 24 square feet (2.22 m2) in area is
exempted from the U-factor requirement in Section 402.1.1.
This exemption shall not apply to the U-factor alternative
approach in Section 402.1.3 and the total UA alternative in
Section 402.1.4.
402.3.5 Thermally isolated sunroom U-factor. For Zones
4 through 8, the maximum fenestration U-factor shall be
0.50 and the maximum skylight U-factor shall be 0.75. New
windows and doors separating the sunroom from condi-
tioned space shall meet the building thermal envelope
requirements.
402.3.6 Replacement fenestration. Where some or all of
an existing fenestration unit is replaced with a new fenestra-
tion product, including sash and glazing, the replacement
fenestration unit shall meet the applicable requirements for
U-factor and SHGC in Table 402.1.1.
402A Air leakage (Mandatory).
402.4.1 Building thermal envelope. The building thermal
envelope shall be durably sealed to limit infiltration. The
sealing methods between dissimilar materials shall allow
for differential expansion and contraction. The following
shall be caulked, gasketed, weatherstripped or otherwise
sealed with an air barrier material, suitable film or solid
material:
1. All joints, seams and penetrations.
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 29
RESIDENTIAL ENERGY EFFICIENCY
2. Site -built windows, doors and skylights.
3. Openings between window and door assemblies and
their respective jambs and framing.
4. Utility penetrations.
5. Dropped ceilings or chases adjacent to the thermal
envelope.
6. Knee walls.
7. Walls and ceilings separating a garage from condi-
tioned spaces.
8. Behind tubs and showers on exterior walls.
9. Common walls between dwelling units.
10. Attic access openings.
11. Rim joist junction.
12. Other sources of infiltration.
402.4.2 Air sealing and insulation. Building envelope air
tightness and insulation installation shall be demonstrated
to comply with one of the following options given by Sec-
tion 402.4.2.1 or 402.4.2.2:
402.4.2.1 Testing option. Building envelope tightness
and insulation installation shall be considered acceptable
when tested air leakage is less than seven air changes per
hour (ACH) when tested with a blower door at a pressure
of 50 pascals (1 psf). Testing shall occur after rough in
and after installation of penetrations of the building
envelope, including penetrations for utilities, plumbing,
electrical, ventilation and combustion appliances.
During testing:
1. Exterior windows and doors, fireplace and stove
doors shall be closed, but not sealed;
2. Dampers shall be closed, but not sealed, including
exhaust, intake, makeup air, backdrafr and flue
dampers;
3. Interior doors shall be open;
4. Exterior openings for continuous ventilation sys-
tems and heat recovery ventilators shall be closed
and sealed;
5. Heating and cooling system(s) shall be turned off,
6. HVAC ducts shall not be sealed; and
7. Supply and return registers shall not be sealed.
402A.2.2 Visual inspection option. Building envelope
tightness and insulation installation shall be considered
acceptable when the items listed in Table 402.4.2, appli-
cable to the method of construction, are field verified.
Where required by the code official, an approved party
independent from the installer of the insulation shall
inspect the air barrier and insulation.
402.4.3 Fireplaces. New wood-buming fireplaces shall
have gasketed doors and outdoor combustion air.
402.4.4 Fenestration air leakage. Windows, skylights and
sliding glass doors shall have an air infiltration rate of no
more than 0.3 cfm per square foot (1.5 Us/mz), and swing-
ing doors no more than 0.5 cfm per square foot (2.6 Ushnz),
when tested according to NFRC 400 or AAMA/WDMA/
CSA 101/l.S.2/A440 by an accredited, independent labora-
tory and listed and labeled by the manufacturer.
Exceptions: Site -built windows, skylights and doors
402.4.5 Recessed lighting. Recessed luminaires installed in
the building thermal envelope shall be sealed to limit air
leakage between conditioned and unconditioned spaces. All
recessed luminaires shall be IC -rated and labeled as meet-
ing ASTM E 283 when tested at 1.57 psf (75 Pa) pressure
differential with no more than 2.0 cfm (0.944 Us) of air
movement from the conditioned space to the ceiling cavity.
All recessed luminaires shall be sealed with a gasket or.
caulk between the housing and the interior wall or ceiling
covering.
402.5 Maximum fenestration U-factor and SHGC (Manda-
tory). The area -weighted average maximum fenestration
U-factor permitted using trade-offs from Section 402.1.4 or
405 shall be 0.48 in Zones 4 and 5 and 0.40 in Zones 6 through
8 for vertical fenestration, and 0.75 in Zones 4 through 8 for
skylights. The area -weighted average maximum fenestration
SHGC permitted using trade-offs from Section 405 in Zones 1
through 3 shall be 0.50.
SECTION 403
SYSTEMS
403.1 Controls (Mandatory). At least one thermostat shall be
provided for each separate heating and cooling system.
403.1.1 Programmable thermostat. Where the primary
heating system is a forced -air furnace, at least one thermo-
stat per dwelling unit shall be capable of controlling the
heating and cooling system on a daily schedule to maintain
different temperature set points at different times of the day.
This thermostat shall include the capability to set back or
temporarily operate the system to maintain zone tempera-
tures down to 55°F (13°C) or up to 85°F (29°C). The ther-
mostat shall initially be programmed with a heating
temperature set point no higher than 70°F (21°C) and a
cooling temperature set point no lower than 78°F (26°C).
403.1.2 Heat pump supplementary heat (Mandatory).
Heat pumps having supplementary electric -resistance heat
shall have controls that, except during defrost, prevent sup-
plemental heat operation when the heat pump compressor
can meet the heating load.
403.2 Ducts.
403.2.1 Insulation (Prescriptive). Supply ducts in attics
shall be insulated to a minimum of R-8. All other ducts shall
be insulated to a minimum of R-6.
Exception: Ducts or portions thereof located completely
inside the building thermal envelope.
403.2.2 Sealing (Mandatory). All ducts, air handlers, filter
boxes and building cavities used as ducts shall be sealed.
30 _ 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL ENERGY EFFICIENCY
Joints and seams shall comply with Section M1601.4.1 of
the International Residential Code.
Duct tightness shall be verified by either of the following:
Postconstmction test: Leakage to outdoors shall be
less than or equal to 8 cfm (226.5 Umin) per 100 It'
(9.29 mz) of conditioned floor area or a total leakage
less than or equal to 12 cfm (12 Umin) per 100 W
(9.29 mz) of conditioned floor area when tested at a
pressure differential of 0.1 inches w.g. (25 Pa) across
the entire system, including the manufacturer's air
handler enclosure. All register boots shall be taped or
otherwise sealed during the test.
2. Rough -in test: Total leakage shall be less than or
equal to 6 cfm (169.9 Umin) per 100 fe (9.29 mz) of
conditioned floor area when tested at a pressure dif-
ferential of 0.1 inches w.g. (25 Pa) across the roughed
in system, including the manufacturer's air handler
enclosure. All register boots shall be taped or other-
wise sealed during the test. If the air handler is not
installed at the time of the test, total leakage shall be
less than or equal to 4 cfm (113.3 Umin) per 100 ftz
(9.29 mz) of conditioned floor area.
Exceptions: Duct tightness test is not required if the air
handler and all ducts are located within conditioned
space.
TABLE 402.4.2
AIR BARRIER AND INSULATION INSPECTION COMPONENT CRITERIA
COMPONENT
CRITERIA
Exterior thermal envelope insulation for framed walls is installed in substantial contact
and continuous alignment with building envelope air barrier.
Air barrier and thermal barrier
Breaks or joints in the air barrier are filled or repaired.
Air -permeable insulation is not used as a sealing material.
Air -permeable insulation is inside of an air barrier.
Air barrier in any dropped ceiling/soffit is substantially aligned with insulation and any
Ceiling/attic
gaps are sealed.
Attic access (except unvented attic), knee wall door, or drop down stair is sealed.
Wall
Comers and headers are insulated.
.
Junction of foundation and sill plate is sealed.
Windows and doors
Space between window/doorjambs and framing is sealed.
Rim joists
Rim joists are insulated and include an air barrier.
Floors
Insulation is installed to maintain permanent contact with underside of subhoor decking.
(including above -garage and cantilevered floors) -
Air barrier is installed at any exposed edge of insulation.
Insulation is permanently attached to walls.
Crawl space walls
Exposed earth in unvented crawl spaces is covered with Class I vapor retarder with
overlapping joints taped.
Shafts, penetrations
Duct shafts, utility penetrations, knee walls and flue shafts opening to exterior or
unconditioned space are sealed.
Batts in narrow cavities are cut to fit, or narrow cavities are filled by sprayed/blown
Narrow cavities
insulation.
Garage separation
Air sealing is provided between the garage and conditioned spaces.
Recessed light fixtures are air tight, IC rated, and sealed to drywall.
Recessed lighting
Exception —fixtures in conditioned space.
Insulation is placed between outside and pipes. Batt insulation is cut to fit around wiring
Plumbing and wiring
and plumbing, or sprayed/blown insulation extends behind piping and wiring.
Showers and tubs on exterior walls have insulation and an air barrier separating them
Shower/tub on exterior wall
from the exterior wall.
Electricaltphone box on exterior walls
Air barrier extends behind boxes or air sealed -type boxes are installed.
Common wall
Air barrier is installed in common wall between dwelling units.
HVAC register boots
HVAC register boots that penetrate building envelope are sealed to subfloor or drywall.
Fireplace
Fireplace walls include an air barrier.
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
31
RESIDENTIAL ENERGY EFFICIENCY
403.2.3 Building cavities (Mandatory). Building framing
cavities shall not be used as supply ducts.
403.3 Mechanical system piping insulation (Mandatory).
Mechanical system piping capable of carrying fluids above
105OF (41 °C) or below 55°F (13°C) shall be insulated to a min-
imum of R-3.
403.4 Circulating hot water systems (Mandatory). All cir-
culating service hot water piping shall be insulated to at least
R-2. Circulating hot water systems shall include an automatic
or readily accessible manual switch that can turn off the hot-
water circulating pump when the system is not in use.
403.5 Mechanical ventilation (Mandatory). Outdoor air
intakes and exhausts shall have automatic or gravity dampers
that close when the ventilation system is not operating.
403.6 Equipment sizing (Mandatory). Heating and cooling
equipment shall be sized in accordance with Section M 1401.3
of the International Residential Code.
403.7 Systems serving multiple dwelling units (Mandatory).
Systems serving multiple dwelling units shall comply with Sec-
tions 503 and 504 in lieu of Section 403.
403.8 Snow melt system controls (Mandatory). Snow- and
ice -melting systems, supplied through energy service to the
building, shall include automatic controls capable of shutting
off the system when the pavement temperature is above 50°F,
and no precipitation is falling and an automatic or manual con-
trol that will allow shutoff when the outdoor temperature is
above 40'R
403.9 Pools (Mandatory). Pools shall be provided with
energy -conserving measures in accordance with Sections
403.9.1 through 403.9.3.
403.9.1 Pool heaters. All pool heaters shall be equipped
with a readily accessible on -off switch to allow shutting off
the heater without adjusting the thermostat setting. Pool
heaters fired by natural gas or LPG shall not have continu-
ously burning pilot lights.
403.9.2 Time switches. Time switches that can automati-
cally turn off and on heaters and pumps according to a preset
schedule shall be installed on swimming pool heaters and
pumps.
Exceptions:
1. Where public health standards require 24-hour
pump operation.
2. Where pumps are required to operate solar- and .
waste -heat -recovery pool heating systems.
403.9.3 Pool covers. Heated pools shall be equipped with a
vapor -retardant pool cover on or at the water surface. Pools
heated to more than 90OF (32°C) shall have a pool cover
with a minimum insulation value of R-12.
Exception: Pools deriving over 60 percent of the energy
for heating from site -recovered energy or solar energy
source.
SECTION 404
ELECTRICAL POWER AND LIGHTING SYSTEMS
404.1 Lighting equipment A minimum of 50 percent of the
lamps in permanently installed lighting fixtures shall be
high -efficacy lamps.
SECTION 405
SIMULATED PERFORMANCE ALTERNATIVE
(Performance)
405.1 Scope. This section establishes criteria for compliance
using simulated energy performance analysis. Such analysis
shall include heating, cooling, and service water heating
energy only.
405.2 Mandatory requirements. Compliance with this sec-
tion requires that the mandatory provisions identified in Sec-
tion 401.2 be met. All supply and return ducts not completely
inside the building thermal envelope shall be insulated to a
minimum of R-6.
405.3 Performance -based compliance. Compliance based on
simulated energy performance requires that a proposed resi-
dence (proposed design) be shown to have an annual energy
cost that is less than or equal to the annual energy cost of the
standard reference design. Energy prices shall be taken from a
source approved by the code official, such as the Department of
Energy, Energy Information Administration's State Energy
Price and Expenditure Report. Code officials shall be permit-
ted to require time -of -use pricing in energy cost calculations.
Exception: The energy use based on source energy
expressed in Btu or Btu per square foot of conditioned floor
area shall be permitted to be substituted for the energy cost.
The source energy multiplier for electricity shall be 3.16.
The source energy multiplier for fuels other than electricity
shall be 1.1.
405A Documentation.
405A.1 Compliance software tools. Documentation veri-
fying that the methods and accuracy of the compliance soft-
ware tools conform to the provisions of this section shall be
provided to the code official.
405.4.2 Compliance report. Compliance software tools
shall generate a report that documents that the proposed
design complies with Section 405.3. The compliance docu-
mentation shall include the following information:
1. Address or other identification of the residence;
2. An inspection checklist documenting the building
component characteristics of the proposed design as
listed in Table 405.5.2(1). The inspection checklist
shall show results for both the standard reference
design and the proposed design, and shall document
all inputs entered by the user necessary to reproduce
the results;
3. Name of individual completing the compliance
report; and
32 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL ENERGY EFFICIENCY
4. Name and version of the compliance software tool.
405.6.2 Specific approval. Performance analysis tools
meeting the applicable sections of Section 405 shall be per -
Exception: Multiple orientations. When an other-
mitted to be approved. Tools are permitted to be approved
wise identical building model is offered in multiple
based on meeting a specified threshold for a jurisdiction.
orientations, compliance for any orientation shall
The code official shall be permitted to approve tools for a
be permitted by documenting that the building
specified application or limited scope.
meets the performance requirements in each of the
four cardinal (north, east, south and west) orienta-
405.6.3 Input values. When calculations require input val-
tions.
ues not specified by Sections 402, 403, 404 and 405, those
I
input values shall be taken from an approved source.
405.4.3 Additional documentation. The code official shall
be permitted to require the following documents:
1. Documentation of the building component character-
istics of the standard reference design.
2. A certification signed by the builder providing the
building component characteristics of the proposed
design as given in Table 405.5.2(1).
3. Documentation of the actual values used in the soft-
ware calculations for the proposed design.
405.5 Calculation procedure.
405.5.1 General. Except as specified by this section, the
standard reference design and proposed design shall be
configured and analyzed using identical methods and tech-
niques.
405.5.2 Residence specifications. The standard reference
design and proposed design shall be configured and ana-
lyzed as specified by Table 405.5.2(1). Table 405.5.2(i)
shall include by reference all notes contained in Table
402.1.1.
405.6 Calculation software tools.
405.6.1 Minimum capabilities.. Calculation procedures
used to comply with this section shall be software tools
capable of calculating the annual energy consumption of all
building elements that differ between the standard refer-
ence design and the proposed design and shall include the
following capabilities:
1. Computer generation of the standard reference
design using only the input for the proposed design.
The calculation procedure shall not allow the user to
directly modify the building component characteris-
tics of the standard reference design.
2. Calculation of whole -building (as a single zone) sizing
for the heating and cooling equipment in the standard
reference design residence in accordance with Section
M1401.3 of the International Residential Code.
3. Calculations that account for the effects of indoor and
outdoor temperatures and part -load ratios on the per-
formance of heating, ventilating and air-conditioning
equipment based on climate and equipment sizing.
4. Printed code official inspection checklist listing each
of the proposed design component characteristics
from Table 405.5.2(l) determined by the analysis to
provide compliance, along with their respective per-
formance ratings (e.g., R-value, U-factor, SHGC,
HSPF, AFUE, SEER, EF, etc.).
33
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL ENERGY EFFICIENCY
TABLE 405.5.2(t)
SPECIFICATIONS FOR THE ATeNne Rn nr=Eo=ure Aran
BUILDING COMPONENT
STANDARD REFERENCE DESIGN
PROPOSED DESIGN
Type: mass wall if proposed wall is mass; otherwise wood frame.
As proposed
Gross area: same as proposed
As proposed
Above -grade walls
U-factor: from Table 402.1.3
As proposed
Solar absorptance = 0.75
As proposed
Emittance = 0.90
As proposed
Type: same as proposed
-
Basement and crawl space walls
Gross area: same as proposed -
As proposed
As proposed
U-factor: from Table 402.1.3, with insulation layer on
interior side of walls.
As proposed
Type: wood frame
As proposed
Above -grade floors
Gross area: same as proposed
As proposed
U-factor: from Table 402.1.3
As proposed
Type: wood frame -
As proposed
Ceilings
Gross area: same as proposed
As proposed
U-factor: from Table 402.1.3
As proposed
Type: composition shingle on wood sheathing
As proposed
Roofs
Gross area: same as proposed
As proposed
Solar absorptance = 0.75
As proposed
Emittance = 0.90
As proposed
Attics
Type: vented with aperture = 1 ft2 per 300 W ceiling area
As proposed
Foundations
Type: same as proposed foundation wall area above and below grade
As proposed
and soil characteristics: same as proposed.
As proposed
Area: 40150
As proposed
Doors
Orientation: North
As proposed
U-factor: same as fenestration from Table 402.1.3.
As proposed
-
Total area" =
As proposed
(a) The proposed glazing area; where proposed glazing area is less
than 15% of the conditioned floor area.
(b)15% of the conditioned floor area; where the proposed glazing
area is 15% or more of the conditioned floor area.
-
Orientation: equally distributed to four cardinal compass
As, proposed
Glazinga
orientations IN, E, S & W).
U-factor: from Table 402.1.3
As proposed
SHGC: From Table 402.1.1 except that for climates with no
As proposed
requirement (NR) SHGC = 0.40 shall be used.
Same as standard reference design
Interior shade fraction:
Summer (all hours when cooling is required) = 0.70
Winter (all hours when heating is required) = 0.85°
External shading: none
As proposed
Skylights
None
As proposed
Thermally isolated sunrooms I
None
As proposed
(continued)
34 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
RESIDENTIAL ENERGY EFFICIENCY
TABLE 405.5.2(1}—continued
FOR THE STANDARD REFERENCE AND PROPOSED DESIGNS
BUILDING COMPONENT
STANDARD REFERENCE DESIGN
PROPOSED DESIGN
For residences that are not tested, the
same as the standard reference design.
For residences without mechanical
ventilation that are tested in
accordance with ASHRAE 119,
Section 5.1, the measured air exchange
rater but not less than 0.35 ACH
-
For residences with mechanical
Air exchange rate
Specific leakage area (SLAT = 0.00036 assuming no energy
ventilation that are tested in
recovery
accordance with ASHRAE 119,
Section 5.1, the measured air
exchange rate° combined with the
mechanical ventilation rate, f which
-
shall not be less than 0.01 x CIA +7.5
x (Ny,+l)
where:
CFA = conditioned floor area
N& = number of bedrooms
None, except where mechanical ventilation is specified by the
proposed design, in which case:
Annual vent fan energy use:
Mechanical ventilation
kWh/yr = 0.03942 x CFA + 29.565 x (Nh, +1)
As proposed
where:
CFA = conditioned floor area
N,, = number of bedrooms
Internal gains
IGain = 17,900 + 23.8 x CFA +4104 x Ny,
Same as standard reference design
_
(Btu/day per dwelling unit)
Same as standard reference design, plus
Internal mass
An internal mass for furniture and contents of 8 pounds per
any additional mass specifically
designed as a thermal storage
.
square foot of floor area.
q
elements but not integral to the
building envelope or structure
For masonry floor slabs, 80% of floor area covered by R-2
As proposed
carpet and pad, and 20% of floor directly exposed to room
air.
Structural mass
For masonry basement walls, as proposed, but with insulation
required by Table 402.1.3 located on the interior side of the
As proposed
walls
For other walls, for ceilings, floors, and interior walls, wood
frame construction
As proposed
As proposed
Heating systemsh
Capacity: sized in accordance with Section M1401.3 of the
As proposed
International Residential Code
As proposed
Cooling systemsh-i
Capacity: sized in accordance with Section M1401.3 of the
As proposed
International Residential Code
Service HZO heatingh• k i -
As proposed
As proposed
Use: same as proposed design
gal/day = 30 + (10 x Ny)
A thermal distribution system efficiency (DSE) of 0.88 shall be
applied to both the heating and cooling system efficiencies
Thermal distribution systems
for all systems other than tested duct systems. Duct
As tested or as specified in Table
insulation: From Section 403.2.1. For tested duct systems, the
405.5.2(2) if not tested
leakage rate shall be the applicable maximum rate from
Section 403.2.2.
Thermostat
Type: Manual, cooling temperature setpoint = 75°F;
Same as standard reference
Heating temperature setpoint = 72OF
(continued)
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 35
RESIDENTIAL ENERGY EFFICIENCY
TABLE 405.5.2(ly—continued /
For SI: 1 square foot = 0.93 m'; 1 British thermal unit = 1055 J; I pound per square foot = 4.88 kg/m'; I gallon (U.S.) = 3.785 L; eC = (°F-3)l1.8,
1 degree = 0.79 md.
a. Glazing shall be defined as sunlight -transmitting fenestration, includingthe area of sash, curbing orother framingelements, thatenclose conditioned space. Glaz-
ing includes the areaof sunlight -transmitting fenestration assemblies in walls boundingconditionedbasements. Fordoorswherethe sunlight-transmitttngopening
is less than 50 percent of the door area, the glazing area is the sunlight transmitting opening. area. For all other doors, the glazing area is the rough frame opening
area for the door including the door and the frame.
b. For residences with conditioned basements, R-2 and R-4 residences and townhouses, the following formula shall be used to determine glazing area:
AF=A,x FAxF
where: .
AF = Total glazing area.
A, = Standard reference design total glazing area.
FA = (Above -grade thermal boundary gross wall area)/(above-grade boundary wall area + 0.5 x below -grade boundary wall area).
F = (Above -grade thermal boundary wall area)/(above-grade thermal boundary wall area + common wall area) or 0.56, whichever is greater.
and where:
Thermal boundary wall is any wall that separates conditioned space from unconditioned space or ambient conditions.
Above -grade thermal boundary wall is any thermal boundary wall component not in contact with soil.
Below -grade boundary wall is any thermal boundary wall in soil contact.
Common wall area is the area of walls shared with an adjoining dwelling unit.
c. For fenestrations facing withinl5 degrees (0.26rad) oftme south that are directly coupled to thermal storagemass, the winter interior shade fraction shall be per-
mitted to be increased to 0.95 in the proposed design.
d. Where leakage area (L) is defined in accordance with Section 5.1 of ASHRAE 119 and where:
SL4 = IJCFA
where L and CFA are in the same units.
e. Tested envelope leakage shall be determined and documented by an independentparty approved by the code official. Hourly calculations as specified in the 2001
ASHRAE Handbook of Fundamenrals, Chapter 26, page 26.21, Equation 40 (Sherman-Grimsmd model) or the equivalent shall be used to determine the energy
loads resulting from infiltration.
f. The combined air exchange rate for infiltration and mechanical ventilation shall be determined in accordance with Equation 43 of 2001 ASHRAE Handbook of
Fundamentals, page 26.24and the "Whole -house Ventilation' provisions of 2001 ASHRAE Handbook ofFmtdanmemals, page 26.19 for intermittent mechanical
ventilation.
g. Thernalstorageelementshallmamaccmponentnotpartofthe floors, walls orceilings thatis part ofapassive solarsystem, and thatprovides thermal storage such
as enclosedwatercolumm, mckbeds, orphase-changecontainem. Athermal storageelementmustbeln thes imeroom as fenestration thatfaces within 15 degrees
(0.26 rad) of true south, or must be connected to such a room with pipes or ducts that allov the element to be actively charged. '
h. Foraproposed design with multiple heating, cooling orwater heating systems using different fuel types, the applicable standard reference design systemcapacities
and fuel types shall be weighted in accordance with their respective loads as calculated by accepted engineering practice for each equipment and fuel type present.
I. For a proposed design without a proposed heating system, a heating system with the prevailing federal minimum efficiency shall be assumed for both the standard
reference design and proposed design. For electric heating systems, the prevailing federal minimum efficiency air -source heat pump shall be used for the standard
reference design. -
j. For a proposed design home without a proposed cooling system, an electric air conditioner with the prevailing federal minimum efficiency shall be assumed for
both the standard reference design and the proposed design.
k. For a proposed design with a nonstorage-type water heater, a40-gallon storage -type water heater with the prevailing federal minimum energy factor for the same
fuel as the predommantheatingfuel type shall beassumed. For the meofapmposeddesignwithout aproposed waterheates, a40-gallon storage -type water heater
with the prevailing federal minimum efficiency for the same fuel as the predominant heating fuel type shall be assumed for both the proposed design and standard
reference design.
TABLE 405.5.2(2)
DEFAULT DISTRIBUTION SYSTEM EFFICIENCIES FOR PROPOSED DESIGNS'
DISTRIBUTION SYSTEM CONFIGURATION AND CONDITION:
FORCED AIR SYSTEMS
HYDRONIC SYSTEMS°
Distribution system components located in unconditioned space
—
0.95
Untested distribution systems entirely located in conditioned spacee
0.88
1
"Ductless" systemsd
1
For SL l cubic foot per minute = 0.47 Us; 1 square foot = 0.093 mr; 1 pound per square inch = 6895 Pa; 1 inch water gauge = 1250 Pa.
a. Default values given by this table are for untested distribution systems, which must still meet minimum requirements for duct system insulation.
b. Hydronic systems shall mean thosesystems thatdistributeheating and cooling energy directly to individual spaces using liquids pumped throughclosedloop pip-
ing and that do not depend on dueled, forced airflow to maintain space temperatures.
c. Entire system in conditioned space shall mean that no component of the distribution system, including the air handler unit, is located outside of the conditioned
space.
d. Ductless systems shall beallowed to have forced airflow across a coil but shall not have any ducted airflow external to the manufacturer's air handlerenclosure.
36 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
CHAPTER 8—In effect until 12/31/2012
DESIGN BY ACCEPTABLE PRACTICE FOR COMMERCIAL BUILDINGS
* Replace the International Mechanical Code with the Arkansas Mechanical Code in Sections
803.2.5 VENTILATION, 803.2.6 COOLING WITH OUTDOOR AIR, 803.2.8.1 DUCT
CONSTRUCTION, 803.2.8.1.1 HIGH- AND MEDIUM -PRESSURE DUCT SYSTEMS,
803.2.8.1.2 LOW-PRESSURE DUCT SYSTEMS, 803.3.4 REQUIREMENTS FOR COMPLEX
MECHANICAL SYSTEMS SERVING MULTIPLE ZONES, and 803.3.8.1 AIR SYSTEM
BALANCING.
* Replace ASHRAE/IESNA 90.1 with ANSI/ASHRAE/IESNA 90.1-2001 in Sections
801.2 APPLICATIONS, SECTION 802 BUILDING ENVELOPE REQUIREMENTS, 802.1
GENERAL, and 802.2 CRITERIA.
Arkansas Commercial Climate Zones
in effect on and after 1/1/2013
FIGURE 501.3
ARKANSAS COMMERCIAL CLIMATE ZONES
Climate Zones 3 and 4 are referenced in ANSI/ASHRAE/IESNA 90.1-2007 and Chapter 5 of the 2009 International
Energy Conservation Code. These codes take effect on and after 1/1/2013.
Climate Zone 4 contains counties of Baxter, Benton, Boone, Carroll, Fulton, Izard, Madison, Marion, Newton,
Search, Stone and Washington.
Climate Zone 3 contains counties of Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark, Clay, Cleburne, Cleveland,
Columbia, Conway, Craighead, Crawford, Crittenden, Dross, Dallas, Desha, Drew, Faulkner, Franklin, Garland,
Grant, Greene, Hempstead, Hot Spring, Howard, Independence, Jackson, Jefferson, Johnson, Lafayette, Lawrence,
Lee, Lincoln, Little River, Logan, Lonoke, Miller, Mississippi, Monroe, Montgomery, Nevada, Ouachita, Perry,
Phillips, Pike, Poinsett, Polk, Pope, Prairie, Pulaski, Randolph, Saline, Scott, Sebastian, Sevier, Sharp, St. Francis,
Union, Van Buren, White, Woodruff and Yell.
Arkansas Energy Code for New Building Construction Supplements and Amendments 17
CHAPTER 5
COMMERCIAL ENERGY EFFICIENCY
SECTION 501
GENERAL
501.1 Scope. The requirements contained in this chapter are
applicable to commercial buildings, or portions of commercial
buildings. These commercial buildings shall meet either the
requirements of ASHRAEAESNA Standard 90.1, Energy
Standard for Buildings Exceptfor L.ow-Rise Residential Build-
ings, or the requirements contained in this chapter.
501.2 Application. The commercial building project shall
comply with the requirements in Sections 502 (Building enve-
lope requirements), 503 (Building mechanical systems), 504
(Service water heating) and 505 (Electrical power and lighting
systems) in its entirety. As an alternative the commercial build-
ing project shall comply with the requirements of
ASHRAE/IESNA 90.1 in its entirety.
Exception: Buildings conforming to Section 506, provided
Sections 502.4, 503.2, 504, 505.2, 505.3, 505.4, 505.6 and
505.7 are each satisfied.
SECTION 502
BUILDING ENVELOPE REQUIREMENTS
502.1 General (Prescriptive).
502.1.1 Insulation and fenestration criteria. The building
thermal envelope shall meet the requirements of Tables
502.2(1) and 502.3 based on the climate zone specified in
Chapter 3. Commercial buildings or portions of commercial
buildings enclosing Group R occupancies shall use the
R-values from the "Group R" column of Table 502.2(1).
Commercial buildings or portions of commercial buildings
enclosing occupancies other than Group R shall use the
R-values from the "All other" column of Table 502.2(1).
Buildings with a vertical fenestration area or skylight area
that exceeds that allowed in Table 502.3 shall comply with
the building envelope provisions of ASHRAE/IESNA 90.1.
502.1.2 U-factor alternative. An assembly with a U-factor,
C-factor, or F-factor equal or less than that specified in
Table 502.1.2 shall be permitted as an alternative to the
R-value in Table 502.2(1). Commercial buildings or por-
tions of commercial buildings enclosing Group R occupan-
cies shall use the U-factor, C-factor, or F-factor from the
"Group R" column of Table 502.1.2. Commercial buildings
or portions of commercial buildings enclosing occupancies
other than Group R shall use the U-factor, C-factor or F-fac-
tor from the "All other" column of Table 502.1.2.
502.2 Specific insulation requirements (Prescriptive).
Opaque assemblies shall comply with Table 502.2(1).
502.2.1 Roof assembly. The minimum thermal resistance
(R-value) of the insulating material installed either between
the roof framing or continuously on the roof assembly shall
be as specified in Table 502.2(1), based on construction,
materials used in the roof assembly.
Exception: Continuously insulated roof assemblies where
the thickness of insulation varies 1 inch (25 nun) or less and
where the area -weighted U-factor is equivalent to the same
assembly with the R-value specified in Table 502.2(1).
Insulation installed on a suspended ceiling with remov-
able ceiling riles shall not be considered part of the mini-
mum thermal resistance of the roof insulation.
502.2.2 Classification of walls. Walls associated with the
building envelope shall be classified in accordance with
Section 502.2.2.1 or 502.2.2.2.
502.2.2.1 Above -grade walls. Above -grade walls are
those walls covered by Section 502.2.3 on the exterior of
the building and completely above grade or walls that are
more than 15 percent above grade.
502.2.2.2 Below -grade walls. Below -grade walls cov-
ered by Section 502.2.4 are basement or first -story walls
associated with the exterior of the building that are at
least 85 percent below grade.
502.2.3 Above -grade walls. The minimum thermal resis-
tance (R-value) of the insulating material(s) installed in the
wall cavity between the framing members and continuously
on the walls shall be as specified in Table 502.2(1), based on
framing type and construction materials used in the wall
assembly. The R-value of integral insulation installed in con-
crete masonry units (Ch" shall not be used in determining
compliance with Table 502.2(1). "Mass walls" shall include
walls weighing at least (1) 35 pounds per square foot (170
kg/m2) of wall surface area or (2) 25 pounds per square foot
(120 kg/mz) of wall surface area if the material weight is not
more than 120 pounds per cubic foot (1900 kg/m3).
502.2.4 Below -grade walls. The minimum thermal resis-
tance (R-value) of the insulating material installed in, or
continuously on, the below -grade walls shall be as specified
in Table 502.2(1),. and shall extend to a depth of 10 feet
(3048 mm) below the outside finished ground level, or to the
level of the floor, whichever is less.
502.2.5 Floors over outdoor air or unconditioned space.
The minimum thermal resistance (R-value) of the insulating
material installed either between the floor framing or con-
tinuously on the floor assembly shall be as specified in Table
502.2(1), based on construction materials used in the floor
assembly.
"Mass floors" shall include floors weighing at least (1) 35
pounds per square foot (170 kghn2) of floor surface area or
(2) 25 pounds per square foot (120 kg/m2) of floor surface
area if the material weight is not more than 12 pounds per
cubic foot (1,900 kg/m3).
2009 INTERNATIONAL ENERGY CONSERVATION CODE° 37
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TABLE 502.1.2
BUILDING ENVELOPE REQUIREMENTS OPAQUE ELEMENT. MAXIMUM U-FACTORS
-
1
2
3
4
EXCEPT MARINE
5 AND
MARINE
6
7
8
CLIMATE ZONE
All other
Group R
All other
Group R
All other
Group R
All other
Group R
All other
Group R
All other
Group R
All other
Group R
All other
Group R
Roots
Insulation entirely
above deck
U-0.063
U-0.048
U-0.048
U-0.048
U-0.048
U-0.048
U-0.048
U-0.048
U-0.048
U-0.048
U-0.048
U-0.048
U-0.039
U-0.039
U-0.039
U-0.039
Metal buildings
U-0.065
U-0,065
U-0.055
U-0.055
U-0.055
U-0.055
U-0.055
U-0.055
U-0.055
U-0.055
U-0.049
U-0.049
U-0.049
U-0.049
U-0.035
U-0.035
Attic and other
U-0.034
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
U-0.027
.: Wells, Above Grade
Mass
U-0.058PU-0.124
U-0.151
U-0.123
U-0.123
U-0.104
U-0.104
U-0.090
U-0.90
U-0.80
U-0.080
U-0.071
U-0.071
U-0.071
U-0.071
U-0.052
Metal building
U-0.093
U-0.093
U-0.093
U-0.084
U-0.084
U-0.084
U-0.084
U-0.069
U-0.069
U-0.069
U-0.069
U-0.057
U-0.057
U-0.057
U-0.057
Metal framed
U-0.124
U-0.124
U-0.064
U-0.084
U-0.064
U-0.064
U-0.064
U-0.064
U-0.064
U-0.064
U-0.057
U-0.051U-0.052
U-0.064
U-0.037
Wood framed and other
U-0.089
U-0.089
U-0.089
U-0.089
U-0.089
U-0.089
U-0.064
U-0.064
U-0.051
U-0.051
U-0.051
U-0.051
U-0.051
U-0.036
U-0.036
Walls, Below Grade
Below -grade walla
C-1.140
C-1.140
C-1.140
C-1.140
C-1.140
C-1.140
C-1.140
C-0.119
C-0.119
C-0.119
C-0.119
C-0.119
C-0. 119
C-0.092
C-0.119
C-Q.075
Floors
Mass
U-0.322
U-0.322
U-0.107
U-0.087
U-0.107
U-0.087
U-0.087
U-0.074
U-0.074
U-0.064
U-0.064
U-0.057
U-0.064
U-0.051
U-0.057
U-0.051
Joist/Framing
U-0.282
U-0.282
U-0.052
U-0.052
-
U-0.033
U-0.033
U-0.033
U-0.033
U-0.033
U-0.033
U-0.033
U-0.033
U-0.033
U-0.033
U-0.033
- Slab -on -Grade Floors
Unheated slabs
F-0.730
F-0.730
F-0.730
F-0.730
F-0.730
F-0.730
F-0.730
F-0.540
F-0.730
F-0.540
F-0.540
F-0.520
F-0.520
F-0.520
F-0.520
F-0.510
Heated slabs
F-1.020
F-1.020
F-1.020
F-1.020
F-0.900
F-0.900
-
F-0.860
F-0.860
F-0.860
F-0.860
F-0.688
F-0.830
F-0.688
F-0.688
F-0.688
a. When heated slabs are placed below -grade, below grade walls must meet the F-factor requirements for perimeter insulation according to the heated slab -on -grade construction.
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TABLE 502.2(1)
..� rscnrneeaacturc _ nDAAIIF ASSEMBLIES
2
tour-DINGENVEWrc
3EXCEPT
-..------------
4
MARINE
5
AND MARINE 4
7
8
CLIMATEZONE
Group R
All other
Group R
All other
Group R
All other Group R
All other
Group R
Ail other
Group R
Allother
Group R
All other
Group R
Roofs
Insulation entirely
P
R-20ci
R-20ci
R-20ci
R-20ci
R-20ciR-20ci
R-20ci
R-20ci
R-20ci
R-20ci
R-20ci
R-25ciR-25ci
R-25ci
R-25ci
above deckR-13+
Met al buildings(wab
R-5 thermal blocks
R-19
R-13
R-13+
R-13
R-13+
R-13
R-19
R-13+"
R-13 R-19
R-13+
R-13
R-19R-19
R-13+
R-19
R-13+
R-19
R-19+R-11+
R-10
R-19
R-19+
R-10
Attic and other
R-30
R-38
R-38
R-38
R-38
R-38
R-38 R-38
R-38
R-38
R-38
R-39
R-38
R-38
R-49
R-49
Walls, Above Grade
NR
R-16
R-5.7cP
R-16
R-5.7ci`
R-16
R-7.6ci
R•16
R-7.fici
R-19
R-9.Sci
R-19
R-9.
R-19 `
R-11.4ci
R-19
R-11.4ci
R-13+
R-5.6ci
R-13.3 ci
R-13+
R-5.6ci
R-13.3ci
R-13+
R-5.6ci
R-15.2ci
R-13+
R-5.6ci
R-15.2ci
R-19+
R-5.6ci
R-15.2ci
R-19+
R-5.6ci
R-256
R-19+
R-5.6ci
R-25ci
R-19+
R-5.6ci
Mass
Metal building,
R-13
R-13
R-13+
7.56
R-13+
R-3.86
R-13+
R-7.Sci
R-13+
R-7.5
R-13+
R-7.56
R-13+
R-7.5 ci
R-13+
R-7.5ci
R-13+
R-7.5ci
R-13+
R-7.51
R-13+
R-7.5,i
R-13+
R-15.66
R-13+
R-7.5 ci
R- +
R-18.8ci
Metal framed
R-13
R-13
R-13
R-13
R-13
R-13
R-13
11
R-13
R-13+
R-3.8ci
R-13+
R-3.86
R-13+
R-3.8
R-13+
R-7.5
R-13+
R-7.5
R-13+
R-7.56
R-13
+7.5ci
R-13+
R-15.6ci
R-I +
15.6ci
Wood framed and
other
Walls, Below Grade
NR
NR
I NR
NR
NR
NR
R-7.5ci
R-7.56
R-7.5ci
R-7.5ci
R-7.Sci
R-7.Sci
R-10ci
R-7.Sci
R-12.5ci
Below wall'
NR
grade
Floors
NR
NR
R-6.3ci
R-19
R-8.3ci
R-30
R-6.3ci
R•19
R-8.3ci
R-30
R-IOci"
y
R-30
R-10Aci
R-30
R-lOci
R-30
R-12.S1
R-30
R-12.Sci
R-30
R-14.6ci
R-30`
R-15ci
R-30
R-16.7ci
R-30`
R-15ci
R-30`
R-16.7ci
R-30`
Mass
NR
JoisvkF in
NR
(steel/wood)
Slab -on -Grade Floors
Unbeated slabs
NR
NR
NR
NR
NR
p R-10 for
NR below 24 in.
NR
R-10 for
below
R-10 for
blow
R-15 for
below
R-15 for
below
R-15 for
below
R-15 for
blow
R-20 for
below
Healed slabs
R-7.5 for
below
R-7.5 for R-7.5 for R-7.5 for
bel w below below
R-10 fot
below
R-10 for
below
R-15 for R-15 for
below below
R-15 for
below
R-15 for
below
R-15 for
b 1 ow
R-20 for
below
R-20 for
below
R-20 for
below
R-20 for
below
R-20n. for
below
Opaque doors
Swinging
Rnit-,in nr sliding
U-0.70
U-1.45
U-0.70
U-1.45
U-0.70
U-1.45
U-0.70
U-1.45
U-0.70
U-1.45
U-0.70
U-1.45
U-0.70 U-0.70
U-0.50 I U-0.50
U-0.70
I U-0.50
U-0.70
I U-0.50
U-0.70
U-0.50
-
U-0.50
I U-0.50
U-0.50
I U-0.50
U-0.50
I U-0.50
U-0.50
I U-0.50
U-0.50
U-0.50
For SI: 1 inch = 25.4 nun.
ci = Continuous insulation. NR = No requirement.
ck is required, otherwise use the U-factor compliance method. [see Tables 502.1.2 and 502.2(2)].
a. When using R-value compliance method, a thermal spacer bin
b. Assembly descriptions can be found in Table 502.2(2).
c. R-5.7 ci is allowed to be substituted with concrete blockwalls complying with ASTM C 90, ungrouted or partially grouted at 32 inches or less on center vertically and 48 inches or less on center horizontally, with
ungrouted cores filled with material having a maximum thermal conductivity of 0.44 Btu-in./lu - fl' - °F.
W d. When heated slabs are placed below grade, below -grade walls must meet the exterior insulation requirements for perimeter insulation according to the heated slab -on -grade construction.
e. Steel floor joist systems shall to be R-38.
COMMERCIAL ENERGY EFFICIENCY
TABLE 502.2(2)
BUILDING ENVELOPE REQUIREMENTS —OPAQUE ASSEMBLIES
ROOFS
DESCRIPTION `
REFERENCE
R-19
Standing seam roof with single fiberglass insulation layer.
This construction is R-19 faced fiberglass insulation baits draped
perpendicular over the purlins. A minimum R-3.5 thermal spacer block is
ASHRAEQESNA 90.1
Table A2.3 including Addendum "G"
placed above the purlin/batt, and the roof deck is secured to the purlins.
Standing seam roof with two fiberglass insulation layers.
R-13 + R-13
The first R-value is for faced fiberglass insulation baits draped over purlins.
ASHRAE/IESNA 90.1
R-13 + R-19
The second R-value is for unfaced fiberglass insulation baits installed parallel
Table A2.3 including Addendum "G"
to the purlins. A minimum R-3.5 thermal spacer block is placed above the
purlin/batt, and the roof deck is secured to the purlins.
Filled cavity fiberglass insulation.
R-11 + R-19 FC
A continuous vapor barrier is installed below the purlins and uninterrupted by
framing members. Both layers of uncompressed, unfaced fiberglass insulation
rest on top of the vapor barrier and are installed parallel, between the purlins.
ASHRAEJIESNA 90.1
Table A2.3 including Addendum "G"
A minimum R-3.5 thermal spacer block is placed above the purfin/batt, and
the roof deck is secured to the purlins.
WALLS
R-16, R-19
Single fiberglass insulation layer.
-
ASHRAEIIESNA 90.1
The construction is faced fiberglass insulation baits installed vertically and
Table A3.2 including Addendum "G"
compressed between the metal wall panels and the steel framing. -
R-13 + R-5.6 ci
The first R-value is for faced fiberglass insulation baits installed
R-19 + R-5.6 ci
perpendicular and compressed between the metal wail panels and the steel
framing. The second rated R-value is for continuous rigid insulation installed
between the metal wall panel and steel framing, or on the interior of the steel
ASHRAE/IESNA 90.1
Table A3.2 including Addendum "G"
framing.
502.2.6 Slabs on grade. The minimum thermal resistance
(R-value) of the insulation around the perimeter of unheated
or heated slab -on -grade floors shall be as specified in Table
502.2(1). The insulation shall be placed on the outside of the
foundation or on the inside of a foundation wall. The insula-
tion shall extend downward from the top of the slab for a
minimum distance as shown in the table or to the top of the
footing, whichever is less, or downward to at least the bot-
tom of the slab and then horizontally to the interior or exte-
rior for the total distance shown in the table.
502.2.7 Opaque doors. Opaque doors (doors having less
than 50 percent glass area) shall meet the applicable require-
ments for doors as specified in Table 502.2(1) and be con-
sidered as part of the gross area of above -grade walls that are
part of the building envelope.
502.3 Fenestration (Prescriptive). Fenestration shall comply
with Table 502.3.
502.3.1 Maximum area. The vertical fenestration area (not
including opaque doors) shall not exceed the percentage of
the gross wall area specified in Table 502.3. The skylight
area shall not exceed the percentage of the gross roof area
specified in Table 502.3.
502.3.2 Maximum U-factor and SHGC. For vertical fenes-
tration, the maximum U-factor and solar heat gain coeffi-
cient (SHGC) shall be as specified in Table 502.3, based on
the window projection factor. For skylights, the maximum
U-factor and solar heat gain coefficient (SHGC) shall be as
specified in Table 502.3.
The window projection factor shall be determined in
accordance with Equation 5-1.
PF = AM (Equation5-1)
where:
PF= Projection factor (decimal).
A = Distance measured horizontally from the furthest
continuous extremity of any overhang, eave, or per-
manently attached shading device to the vertical sur-
face of the glazing.
B = Distance measured vertically from the bottom of the
glazing to the underside of the overhang, Cave, or per-
manently attached shading device.
Where different windows or glass doors have different
PF values, they shall each be evaluated separately, or an
area -weighted PF value shall be calculated and used for all
windows and glass doors.
502.4 Air leakage (Mandatory).
502A.1 Window and door assemblies. The air leakage of(
window and sliding or swinging door assemblies that are
part of the building envelope shall be determined in accor-
dance with AAMA/WDMA/CSA 101/I.S.2/A440, or
NFRC 400 by an accredited, independent laboratory, and
40 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
labeled and certified by the manufacturer and shall not
exceed the values in Section 402.4.2.
Exception: Site -constructed windows and doors that are
weatherstripped or sealed in accordance with Section
502.4.3.
502A.2 Curtain wall, storefront glazing and commercial
entrance doors. Curtain wall, storefront glazing and com-
mercial -glazed swinging entrance doors and revolving
doors shall be tested for air leakage at 1.57 pounds per
square foot (psf) (75 Pa) in accordance with ASTM E 283.
For curtain walls and storefront glazing, the maximum air
leakage rate shall be 0.3 cubic foot per minute per square
foot (cfm/ft2) (5.5 m3/h x in) of fenestration area. For com-
mercial glazed swinging entrance doors and revolving
doors, the maximum air leakage rate shall be 1.00 cfm/ft2
(18.3 m3/h x in) of door area when tested in accordance
with ASTM E 283.
502.4.3 Sealing of the building envelope. Openings and
penetrations in the building envelope shall be sealed with
caulking materials or closed with gasketing systems com-
patible with the construction materials and location. Joints
and seams shall be sealed in the same manner or taped or
covered with a moisture vapor -permeable wrapping mate-
rial. Sealing materials spanning joints between construction
materials shall allow for expansion and contraction of the
construction materials.
502.4.4 Hot gas bypass limitation. Cooling systems shall
not use hot gas bypass or other evaporator pressure control
systems unless the system is designed with multiple steps of
unloading or continuous capacity modulation. The capacity
of the hot gas bypass shall be limited as indicated in Table
502.4.4.
Exception: Unitary packaged systems with cooling
capacities not greater than 90,000 Broth (26 379 W).
TABLE 502.4.4
MAXIMUM HOT GAS BYPASS CAPACITY
MAXIMUM HOT GAS BYPASS
CAPACITY
RATED CAPACITY
(%of total capacity)
<_ 240,000 Btu/h
50%
> 240,000 Btu/h
25%
For SL 1 Btu/h = 0.29 watts.
502.4.5 Outdoor air intakes and exhaust openings. Stair
and elevator shaft vents and other outdoor air intakes and
exhaust openings integral to the building envelope shall be
equipped with not less than a Class I motorized, leak-
age -rated damper with a maximum leakage rate of 4 cfm per
square foot (6.8 Us • C m2) at 1.0 inch water gauge (w.g.)
(1250 Pa) when tested in accordance with AMCA 5001).
Exception: Gravity (nonmotorized) dampers are per-
mitted to be used in buildings less than three stories in
height above grade.
502.4.6 Loading dock weatherseals. Cargo doors and
loading dock doors shall be equipped with weatherseals to
restrictinfiltration when vehicles are parked in the doorway.
TABLE 502.3
BUILDING ENVELOPE REQUIREMENTS: FENESTRATION
CLIMATE ZONE
7
2
3
4
EXCEPT MARINE I
5
AND MARINE
6
7
8
Vertical fenestration (40% maximum of above -grade wall)
U-factor
Framing materials other than metal with or without metal reinforcement or cladding
11-factor
1.20
1 0.75
0.65
0.40
0.35
0.35
1 0.35
0.35
Metal framing with or without thermal break
Curtain wall/storefront U-factor
1.20
0.70
0.60
0.50
0.45
0.45
0.40
0.40
Entrance door U-factor
1.20
1.10
0.90
0.85
0.80
0.80
0.80
0.80
All other U-factor°
1.20
0.75
0.65
0.55
0.55
0.55
0.45
0.45
SHGC-all frame types
SHGC: PF <0.25
0.25
0.25
0.25
0.40
0.40
0.40
0.45
0.45
SHGC: 0.25:5 PF < 0.5
0.33
0.33
0.33
NR
NR
NR
NR
NR
SHGC: PF>_ 0.5
0.40
0.40
0.40
NR
NR
NR
NR
NR
Skylights (3% maximum)
U-factor
0.75
0.75
0.65
0.60
0.60
0.60
0.60
0.60
SHGC
1 0.35
1 0.35
1 0.35
0.40
1 0.40
0.40
NR
NR
NR = No requirement.
PF = Projection factor (see Section 502.3.2).
a. All others includes operable windows, fixed windows and nonentrance doors.
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 41
COMMERCIAL ENERGY EFFICIENCY
N*
502.4.7 Vestibules. A door that separates conditioned space
from the exterior shall be protected with an enclosed vestibule,
with all doors opening into and out of the vestibule equipped
with self -closing devices. Vestibules shall be designed so that
in passing through the vestibule it is not necessary for the inte-
rior and exterior doors to open at the same time.
Exceptions:
1. Buildings in climate Zones I and 2 as indicated in
Figure 301.1 and Table 301.1.
2. Doors not intended to be used as a building
entrance door, such as doors to mechanical or
electrical equipment rooms.
3. Doors opening directly from a sleeping unit or
dwelling unit. r
4. Doors that open directly from a space less than
3,000 square feet (298 m2) in area.
5. Revolving doors.
6. Doors used primarily to facilitate vehicular move-
ment or material handling and adjacent personnel
doors.
502.4.8 Recessed lighting. Recessed luminaires installed in
the building thermal envelope shall be sealed to limit air
leakage between conditioned and unconditioned spaces. All
recessed luminaires shall be IC -rated and labeled as meet-
ing ASTM E 283 when tested at 1.57 psf (75 Pa) pressure
differential with no more than 2.0 cfm (0.944 Us) of air
movement from the conditioned space to the ceiling cavity.
All recessed luminaires shall be sealed with a gasket or
caulk between the housing and interior wall or ceiling cov-
ering.
SECTION 503
BUILDING MECHANICAL SYSTEMS
503.1 General. Mechanical systems and equipment serving
the building heating, cooling or ventilating needs shall comply
with Section 503.2 (referred to as the mandatory provisions)
and either:
1. Section 503.3 (Simple systems), or
2. Section 503.4 (Complex systems).
503.2 Provisions applicable to all mechanical systems
(Mandatory).
503.2.1 Calculation of heating and cooling loads. Design
loads shall be determined in accordance with the procedures
described in the ASHRAE/ACCA Standard 183. Heating
and cooling loads shall be adjusted to account for load
reductions that are achieved when energy recovery systems
are utilized in the HVAC system in accordance with the
ASHRAE HVAC Systems and Equipment Handbook. Alter-
natively, design loads shall be determined by an approved
equivalent computation procedure, using the design param-
eters specified in Chapter 3.
503.2.2 Equipment and system sizing. Equipment and
system sizing. Heating and cooling equipment and systems
capacity shall not exceed the loads calculated in accordance
with Section 503.2.1. A single piece of equipment provid-
ing both heating and cooling must satisfy this provision for
one function with the capacity for the other function as
small as possible, within available equipment options.
Exceptions:
1. Required standby equipment and systems pro-
vided with controls and devices that allow such
systems or equipment to operate automatically
only when the primary equipment is not operating.
2. Multiple units of the same equipment type with
combined capacities exceeding the design load
and provided with controls that have the capability
to sequence the operation of each unit based on
load.
503.2.3 HVAC equipment performance requirements.
Equipment shall meet the minimum efficiency require-
ments of Tables 503.2.3(1), 503.2.3(2), 503.2.3(3),
503.2.3(4), 503.2.3(5), 503.2.3(6) and 503.2.3(7) when
tested and rated in accordance with the applicable test pro-
cedure. The efficiency shall be verified through certification
under an approved certification program or, if no certifica-
tion program exists, the equipment efficiency ratings shall
be supported by data furnished by the manufacturer. Where
multiple rating conditions or performance requirements are
provided, the equipment shall satisfy all stated require-
ments. Where components, such as indoor or outdoor coils,
from different manufacturers are used, calculations and
supporting data shall be furnished by the designer that dem-
onstrates that the combined efficiency of the specified com-
ponents meets the requirements herein.
Exception: Water-cooled centrifugal water -chilling
packages listed in Table 503.2.3(7) not designed for
operation at ARHI Standard 550/590 test conditions of
44°F (7°C) leaving chilled water temperature and 850F
(29°C) entering condenser water temperature with 3
gpmhon (0.054 Us.kW) condenser water flow shall have
maximum full load and NPLV ratings adjusted using the
following equations:
Adjusted maximum full load kW/ton rating = [full
load kW/ton from Table 503.2.3(7)]/Kj
Adjusted maximum NPLV rating = [IPLV from Table
503.2.3(7)]/Kwj
where:
K,; = 6.174722 - 0.303668(X) +
0.00629466(X)2 - 0.000045780(X)3
X = DTs + LIFT
DT,id = 124+[full load kW/ton from Table
503.2.3(7)] x 6.831/Flow
Flow = Condenser water flow (GPM)/Cooling
Full Load Capacity (tons)
LIFT = CEWT — CLWT (°F)
CEWT= Full Load Condenser Entering Water
Temperature (°F)
CLWT= FullLoadLeavingChilledWaterTem-
perature (°F)
42. 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
•r
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The adjusted full load and NPLV values are only
applicable over the following full -load design ranges:
Minimum Leaving Chilled
Water Temperature: 38°F (3.3cC)
Maximum Condenser Entering
Water Temperature: 102°F (38.9°C)
Condensing Water Flow: 1 to 6 gpm/ton 0.018 to
0.1076 1/s • kW) and X >_ 39 and < 60
Chillers designed to operate outside of these ranges or
applications utilizing fluids or solutions with secondary
coolants (e.g., glycol solutions or brines) with a freeze point
of 27cF (-2.8cC) or lower for freeze protection are not cov-
ered by this code.
TABLE 503.2.3(1)
uNITARV Ala rnNnITIf1NF0R ANn rnNnFNRING UNITS_ ELECTRICALLY OPERATED. MINIMUM EFFICIENCY REQUIREMENTS
SUBCATEGORY OR
EQUIPMENT TYPE
SIZE CATEGORY
RATING CONDITION
MINIMUM EFFICIENCY°
TEST PROCEDURE'
Split system
13.0 SEER
<65,000 Btu/h'
Single package
13.0 SEER
10.3 EERc
AHRI 210/240
>t 65,000 Btu/h
Split system and
(before Jan 1, 2010)
and
< 135,000 Bluth
single package
11.2 EERc
(as of Jan 1, 2010)
9.7 EERc
>_ 135,000 Btu/h
Split system and
(before Jan 1, 2010)
and
single package
11.0 EER°
<240,and Btu/h
(as of Jan 1, 2010)
Air conditioners,
-
9.SEER`
Air cooled
9.7 IPLVc
2 240,000 Btu/h
Split system and
(before Jan 1, 2010)
and
<760,000Btu/h
single package
AHRI3401360
10.0EERc 9.7IPLV9
(as of Jan 1, 2010)
9.2 EERc
9.4IPLVc
Split system and
(before Jan 1, 2010)
>_ 760,000 Btu/h
single package
9.7 EERc
9.4IPLVc
(as of Jan 1, 2010)
10.9 SEER
(before Jan 23, 2010)
Split system
12.0 SEER
Through -the -wall,
< 30,000 Btu/h a
(as of Jan 23, 2010)
AHRI 210/240
Air cooled
10.6 SEER
(before Jan 23, 2010)
Single package
12.0 SEER
(as of Jan 23, 2010)
<65,000 Bluth
Split system and
Split
EER
single package
>_ 65,000 Btu/h
AHRI 210/240
and
Split system and
11.5 EERc
Air conditioners, Water
< 135,000 Btu/h
single package
> 135,000 Btu/h
Split system and
and evaporatively cooled
and
package
11.0 EERc
< 240,000 Btu/h
AHRI 340/360
AHRI
>_ 240,000 B
Btu/h
Split system and
Split
EERc
single package
For SI: I British thermal unit per hour = 0.2931 W.
a. Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. IPLVs are only applicable to equipment with capacity modulation.
c. Deduct 0.2 from the required EERc and IPLVs for units with a heating section other than electric resistance heat.
d. Single-phase air-cooled air conditioners <65,000 Btu/h me regulated by the National Appliance Energy Conservation Act of 1987 (NAECA); SEER values are
those set by NAECA.
e 2009 INTERNATIONAL ENERGY CONSERVATION CODE® 43
COMMERCIAL ENERGY EFFICIENCY
TABLE S03.2.3(2)
UNITARY AIR CONDITIONERS AND CONDENSING UNITS. ELECTRIC -al 1 v nPPRATFn MINIMI IM RFF1nIFNCV RFn111RPMPMTC
SUBCATEGORY OR
EQUIPMENT TYPE
SIZE CATEGORY
RATING CONDITION
MINIMUM EFFICIENCY^
TEST PROCEDUREa
Split system
13.0 SEER
< 65,000 Btu/hd
Single package
13.0 SEER
>_ 65,000 Btu/h
10.1 EERc
AHRI 210/240
and
Split system and
(before Jan 1, 2010)
< 135,000 Bm/h
single package
11.0 EERc
(as of Jan 1, 2010)
Air cooled,
> 135,000 Bm/h
9.3 EERc
(Cooling mode)
and:
Split system and
(before Jan 1, 2010)
< 240,000 Bm/h
single package
10.6 EERc
(as of Jan 1, 2010)
9.0 EERc
AHRI 340/360
9.2IPLVc
>_ 240,000 Btu/h
Split system and
(before Jan 1, 2010)
single package
9.5 EERc
9.2IPLVC
(as of Jan 1, 2010)
10.9 SEER
Split system
(before Jan 23, 2010)
12.0 SEER
Through -the -Wall
(as of Jan 23, 2010)
(Air cooled, cooling
< 30,000 Btu/hd
AHRI 210/240
mode)
10.6 SEER
Single package
(before Jan 23, 2010)
12.0 SEER
(as of Jan 23, 2010)
< 17,000 Btu/h
86°F entering water
11.2 EER
AHR11ASHRAE 13256-1
Water Source
> 17,000 Btu/h
(Cooling mode)
and
86"F entering water
12.0 EER
AHRIASHRAE 13256-1
< 135,000 Btu/h
Groundwater Source
(Cooling mode)
< 135,000 Btu/h
59°F entering water
16.2 EER
AHRI/ASHRAE 13256-1
Ground source
(Cooling mode)
< 135,000 Btu/h
77T entering water
13.4 EER
AHRVASHRAE 13256-1
< 65,000 Btu/hd
Split system
7.7 HSPF
Single package
7.7 HSPF
(Cooling capacity)
>_ 65,000 Btu/h
3.2 COP
AHRI 210/240
Air cooled
and
47°F db/43"F wb Outdoor air
(before Jan 1, 2010)
(Healing mode)
< 135,000 Btu/h
3.3 COP
(Cooling capacity)
(asof Jan1, 2010)
3.1 COP
> 135,000 Btu/b
(Cooling capacity)
47F db/43cF wb Outdoor air
(before Jan 1, 2010)
3.2 COP
AHRI 340/360
(as of Jan 1, 2010)
(continued)
44 - 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
TABLE 503.2.3(2)--continued
UNITARY AIR CONDITIONERS AND CONDENSING UNITS, ELECTRICALLY OPERATED, MINIMUM EFFICIENCY REQUIREMENTS
EQUIPMENT TYPE
SIZE CATEGORY
SUBCATEGORY OR
RATING CONDITION
MINIMUM EFFICIENCY"
TEST PROCEDUREe
7.1 HSPE
(before Jan 23, 2010)
Split System
7.4 HSPF
Through -the -wall
< 30,000 Bluth
(as of Jan 23, 2010)
AHRI 210/240
(Air cooled, heating mode)
7.0 HSPF
(before Jan 23, 2010)
Single package
7.4 HSPF
(as of Jan 23, 2010)
Water source
< 135,000 Broth
68"F entering water
4.2 COP
AHRI/ASHRAE 13256-1
(Heating mode)
(Cooling capacity)
Groundwater source
< 135,000 Btu/h
50OF entering water
3.6 COP
AHRI/ASHRAE 13256-1
(Heating mode)
(Cooling capacity)
Ground source
< 135,000 Btu/h
32OF entering water
3.1 COP
AHRI/ASHRAE 13256-1
(Heating mode)
(Cooling capacity)
For SI: °C = [("F) - 32]/1.8, 1 British thermal unit per hour = 0.2931 W.
db = dry-bulb temperature, °F; wb = wet -bulb temperature, °F.
a. Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year tersion of the test procedure.
b. IPLVs and Part load rating conditions are only applicable to equipment with capacity modulation,
c. Deduct 0.2 from the required EERs and IPLVs for units with a heating section other than electric resistance heat.
d. Single-phase air-cooled heat pumps <65,000 Btu/h are regulated by the National Appliance Energy Conservation Actof 1987(NAECA), SEER and HSPF values
are those set by NAECA.
TABLE 503.2.3(3)
PACKAGED TERMINAL AIR CONDITIONERS AND PACKAGED TERMINAL HEAT PUMPS
EQUIPMENT TYPE
SIZE CATEGORY
(INPUT)
SUBCATEGORY OR
RATING CONDITION
MINIMUM EFFICIENCY°
TEST PROCEDURE'
PTAC (Cooling mode)
All capacities
95°F db outdoor air
12.5 - (0.213 • Cap/1000) EER
New construction
PTAC (Cooling mode)
All capacities
95°F db outdoor air
10.9 - (0.213 - Cap/1000) EER
Replacements`
PTHP (Cooling mode)
All capacities
950E db outdoor air
12.3 - (0.213 • Cap/1000) EER
New construction
AHRI 310/380
PTHP (Cooling mode)
All capacities
95°F db outdoor air
10.8 - (0.213 - Cap/1000) EER
Replacements`
PTHP (Heating mode)
All capacities
—
3.2 - (0.026 • Cap/1000) COP
New construction
PTHP (Heating mode)
All capacities
—
2.9 - (0.026 - Cap/1000) COP
Replacements°
For SI: °C - [(°F) - 32]/1.8, 1 British thermal unit per hour - 02931 W.
db = dry-bulb temperature, °E
wb = wet -bulb temperature, "F.
a. Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. Cap means the rated cooling capacity of the product in Bluth. If the unit's capacity is less than 7,000 Btwb, use 7,000 Broth in the calculation. If the unit's capacity
is greater than 15,000 Bluth, use 15,000 Btu/h in the calculation.
c. Replacement units must be factory labeled as follows: "MANUFACTURED FOR REPLACEMENT APPLICATIONS ONLY: NOT TO BE INSTALLED IN
NEW CONSTRUCTION PROJECTS." Replacement efficiencies apply only to units with existing sleeves less than 16 inches (406 mm) high and less than 42
inches (1067 mm) wide.
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 45
i COMMERCIAL ENERGY EFFICIENCY
j-:
l
TABLE 503.2.3(4)
WARM AIR FURNACES AND COMBINATION WARM AIR FURNACES/AIR-CONDITIONING UNITS,
WARM AIR DUCT FURNACES AND UNIT HEATERS, MINIMUM EFFICIENCY REQUIREMENTS
SIZE CATEGORY
SUBCATEGORY OR
MINIMUM
EQUIPMENT TYPE
(INPUT)
RATING CONDITION
EFFICIENCY a•e
TEST PROCEDURE'
78% AFUE
DOE 10 CFR Part 430
Warm air furnaces,
< 225,000 Btu/h
—
or
or ANSI Z21.47
gas fined
80% E,°
>_ 225,000 Broth
Maximum capacity°
80% E,f
ANSI Z21.47
78% AFUE
DOE 10 CFR Part 430
Warm air furnaces,
< 225,000 Bluth
—
or
or UL 727
oil fired
80% E,e
>_ 225,000 Btu/h
Maximum capacity°
81% E,s
UL 727
Warm air duct furnaces,
All capacities
Maximum capacity"
80% E,
ANSI Z83.8
gas feed
Warm air unit heaters,
All capacities
Maximum capacity"
80% E,
ANSI Z83.8
gas fired
Warm air unit heaters,
All capacities
Maximum capacityb
80% E,
UL 731
oil fired
For SI: 1 British thermal unit per hour = 0.2931 W.
a. Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
b. Minimum and maximum ratings as provided for and allowed by the unit's controls.
c. Combinafionunits notcovered by the National Appliance Energy Conservation Act of 1987 (NAECA) (3-phasepowerorwolingcapacitygeaterthan orequalto
65,000 Btu/h (19 kW]) shall comply with either rating.
d. E, = Thermal efficiency. See test procedure for detailed discussion.
e. E, = Combustion efficiency (100% less flue losses). See test procedure for detailed discussion.
f. E, = Combustion efficiency. Units must also include an IID, have jackets not exceeding 0,75 percent of the input rating, and have either power venting or a flue
damper. A vent damper is an acceptable alternative to a flue damper for those furnaces where combustion air is drawn from the conditioned space.
g. E,= Thermal efficiency. Units must also include an IID, havejacket losses not exceeding 0.75 percent of the input rating, and have eitherpower venting or a flue
damper. A vent damper is an acceptable alternative to a flue damper for those furnaces where combustion air is drawn from the conditioned space.
C;+,r of Fayetteville
Building Safety Division,
113 W Mountain SL
Fay,edevii1p, AR 72701
46 2009 INTERNATIONAL ENERGY CONSERVATION CODE'®
COMMERCIAL ENERGY EFFICIENCY
TABLE 503.2.3(5)
BOILERS, GAS- AND OIL -FIRED, MINIMUM EFFICIENCY REQUIREMENTS
SUBCATEGORY OR RATING
EQUIPMENTTYPE'
SIZE CATEGORY
CONDITION
MINIMUM EFFICIENCY°
TESTPROCEDURE
Hot water
80% AFUE
DOE 10 CFR
< 300,000 Btu/h
Part 430
Steam
75%AFUE
>_ 300,000 Btu/h
and
Minimum capacity"
75% E and 80% E
Boilers, Gas -fired
< 2,500,000 Btu/h
(See Note c, d)
80% E,
DOE 10 CFR
.
Hot water
(See Note c, d)
Part 431
> 2,500,000 Btu/h'
Steam
80% E,
(See Note c, d)
< 300,000 Btu/h
—
80% AFUE
DOE 10 CFR
Part 430
>_ 300,000 Bugh
and
Minimum capacity"
78% E and 83% E,
Boilers, Oil -fired
2,500,000 Btu/h
(See Note c, d)
83% E,
DOE 10 CFR
Ho[ water
(See Note c, d)
Part 431
> 2,500,000 Btu/h'
Steam
83% E,
(See Note c, d)
>_ 300,000 Bw/h
and
Minimum capacityb
78% E and 83% E
< 2,500,000 Btu/h
(See Note c, d)
Boilers, Oil -tired
83% E°
DOE 10 CFR
(Residual)
Hot water -
(See Note c, d)
Part 431
> 2,500,000 Btu&
Steam
83% E,
' (See Note c, d) .
For SI: 1 British thermal unit per hour = 0.2931 W.
a. Chapter 6 contains a complete specification of the referenced test procedure, including the, referenced year.version of the test procedure.
b. Minimum ratings as provided for and allowed by the uniPs controls.
c. E.= Combustion efficiency (100 percent less flue losses). See reference document for detailed information.
d. E,= Thermal efficiency. See reference document for detailed information.
e. Alternative test procedures used at the manufacturer's option are ASME PTC-4.1 for units greater than 5,000,000 Btu/h input, or ANSI Z21.13 for units greater
than or equal to 300,000 Btu/h and less than or equal to 2,500,000 Btu/h input
f. These requirements apply to boilers with rated input of 8,000,000 Btu/h or less that are not packaged boilers, and to all packaged boilers. Minimum efficiency
requirements for boilers cover all capacities of packaged boilers.
TABLE 503.2.3(6)
CONDENSING UNITS, ELECTRICALLY OPERATED, MINIMUM EFFICIENCY REQUIREMENTS
EQUIPMENT TYPE
SIZE CATEGORY
MINIMUM EFFICIENCY°
TEST PROCEDURE'
Condensing units,
>_ 135,000 Btu/h11.2IPLV
10.1 EER
air cooled
AHRI 365
Condensing units,
>_ 135,000 Bluth
13.1 EER
water or evaporatively cooled
13.1 IPLV
For SI: 1 British thermal unit per hour = 0.2931 W.
a. Chapter 6 contains a complete specification of the referenced test procedure, including the referenced year .version of the test procedure.
b. IPLVs are only applicable to equipment with capacity modulation
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 47
s'',!"• COMMERCIAL ENERGY EFFICIENCY
TABLE 503.2.3(7)
WATER CHILLING PACKAGES, EFFICIENCY REQUIREMENTS'
BEFORE111/2010
AS OF 1/112010`
PATH A
PATH B
FULL
SIZE
TEST
EQUIPMENT TYPE
CATEGORY
UNITS
FULL LOAD
IPLV
FULL LOAD
IPLV
LOAD
IPLV
PROCEDURE"
< 150 tons
EER
>_ 9.562
>_ 12.500
Air-cooled chillers
>_ 9.562
> 10.416
>_ 150 tons
EER
? 9.562
>_ 12.750
Air cooled without
Air-cooled chillers without condensers must
condenser, electrical
All
EER
>_ 10.586
> 11.782
be rated with matching condensers and
operated
capacities
comply with the air-cooled chiller efficiency
requirements
Water cooled,
All
Reciprocating units must comply with water
electrically operated,
kW/ton
<_ 0.837
< 0.696
cooled positive displacement efficiency
reciprocating
capacities
requirements
<75tons
kW/ton
<0.780
<0.630
<0.800
50.600
>_75tons
<0.790
50.676
and -
kW/ton
< 0.775
<_ 0.615
<_ 0.790
5 0.586
Water cooled,
-
< 150 tons
AHRI
electrically operated,
550/590
positive displacement
>>> 150 tons
and
kW/ton
50.717
<0.627
<0.680
<0.580
<0.718
<0.540
< 300 tons
>_ 300 tons
kW/ton
<_ 0.639
< 0.571
50.620
<_ 0.540
5 0.639
5 0.490
< 150 tons
kW/ton
5 0.703
5 0.669
>_ 150 tons
< 0.634
50.596
5 0.639
5 0.450
and
kW/ton
<0.634
<0.596
Water cooled,
<300tons
electrically operated,
centrifugal
> 300 tons
and
kW/ton
<0.576
<_0.549
50.576
50.549
<0.600
<_0.400
< 600 tons
>_ 600 tons
kW/ton
< 0.576
<_ 0.549
<_ 0.570
< 0.539
<_ 0.590
< 0.400
Air cooled, absorption
All
COP
>_ 0.600
NRe
>_ 0.600
NRe
NAd
NAd
single effect
capacities
Water-cooled,
All
absorption single
COP
? 0.700
NRe
? 0.700
NRe
NAd
NAd
effect
capacities
AHRI 560
Absorption double
All
COP
>_ 1:000
>_ 1.050
>_ 1.000
>_ 1.050
NAd
NAd
effect, indirect -fired
capacities
Absorption double
All
COP
>_ 1.000
>_ 1.000
>_ 1.000
>_ 1.000
NAd
NAd
effect, direct fired
capacities
For SI: I ton = 3517 W, 1 British thermal unit per hour = 0.2931 W.
a. The chiller equipment requirements do not apply for chillers used in low -temperature applications where the design leaving fluid temperature is <40°E
b. Section 12 contains a complete specification of the referenced test procedure, including the referenced year version of the test procedure.
c. Compliance with this standard can be obtainedby meeting the minimumrequirements of Path A or B. However, both the full load and IPLV must be met to fulfill
the requirements of Path A or B.
d. NA means that this requirement is not applicable and cannot be used for compliance.
e. NR means that there are no minimum requirements for this category.
48 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
503.2A HVAC system controls. Each heating and cooling
system shall be provided with thermostatic controls as
required in Section 503.2.4.1, 503.2.4.2, 503.2.4.3,
503.2.4.4, 503.4.1, 503.4.2, 503.4.3 or 503.4.4.
503.2.4.1 Thermostatic controls. The supply of heating
and cooling energy to each zone shall be controlled by
individual thermostatic controls capable of responding
to temperature within the zone. Where humidification or
dehumidification or both is provided, at least one humid-
ity control device shall be provided for each humidity
control system.
Exception: Independent perimeter systems that are
designed to offset only building envelope heat losses
or gains or both serving one or more perimeter zones
also served by an interior system provided:
1. The perimeter system includes at least one ther-
mostatic control zone for each building expo-
sure having exterior walls facing only one
orientation (within +/- 45 degrees) (0.8 rad) for
more than 50 contiguous feet (15.2 m); and
2. The perimeter system heating and cooling sup-
ply is controlled by a thermostat(s) located
within the zone(s) served by the system.
503.2A.1.1 Heat pump supplementary heat. Heat
pumps having supplementary electric resistance heat
shall have controls that, except during defrost, prevent
supplementary heat operation when the heat pump
can meet the heating load.
503.2.4.2 Set point overlap restriction. Where used to
control both heating and cooling, zone thermostatic con-
trols shall provide a temperature range or deadband of at
least 5°F (2.8°C) within which the supply of heating and
cooling energy to the zone is capable of being shut off or
reduced to a minimum.
Exception: Thermostats requiring manual change-
over between heating and cooling modes.
503.2.4.3 Off -hour controls. Each zone shall be provided
with thermostatic setback controls that are controlled by
either an automatic time clock or programmable control
system.
Exceptions:
1. Zones that will be operated continuously.
2. Zones with a full HVAC load demand not
exceeding 6,800 Btu/h (2 kW) and having a
readily accessible manual shutoff switch.
503.2.4.3.1 Thermostatic setback capabilities.
Thermostatic setback controls shall have the capabil-
ity to set back or temporarily operate the system to
maintain zone temperatures down to 55°F (13°C) or
up to 85°F (29°C).
503.2.4.3.2 Automatic setback and shutdown
capabilities. Automatic time clock or programmable
controls shall be capable of starting and stopping the
system for seven different daily schedules per week
and retaining their programming and time setting dur-
ing a loss of power for at least 10 hours. Additionally,
the controls shall have a manual override that allows
temporary operation of the system for up to 2 hours; a
manually operated timer capable of being adjusted to
operate the system for up to 2 hours; or an occupancy
sensor.
503.2.4.4 Shutoff damper controls. Both outdoor air
supply and exhaust ducts shall be equipped with motor-
ized dampers that will automatically shut when the sys-
tems or spaces served are not in use.
Exceptions:
1. Gravity dampers shall be permitted in buildings
less than three stories in height.
2. Gravity dampers shall be permitted for build-
ings of any height located in Climate Zones 1, 2
and 3.
3. Gravity dampers shall be permitted for outside
air intake or exhaust airflows of 300 cfm (0.14
m3/s) or less.
503.2.4.5 Snow melt system controls. Snow- and
ice -melting systems, supplied through energy service to
the building, shall include automatic controls capable of
shutting off the system when the pavement temperature
is above 50°F (10°C) and no precipitation is falling and
an automatic or manual control that will allow shutoff
when the outdoor temperature is above 40°F (4°C) so
that the potential for snow or ice accumulation is negligi-
ble.
503.2.5 Ventilation. Ventilation, either natural or mechani-
cal, shall be provided in accordance with Chapter 4 of the
International Mechanical Code. Where mechanical ventila-
tion is provided, the system shall provide the capability to
reduce the outdoor air supply to the minimum required by
Chapter 4 of the International Mechanical Code.
503.2.5.1 Demand controlled ventilation. Demand
control ventilation (DCV) is required for spaces larger
than 500 ft2 (50 m2) and with an average occupant load of
40 people per 1000 ftz (93 mz) of floor area (as estab-
lished in fable 403.3 of the International Mechanical
Code) and served by systems with one or more of the fol-
lowing:
1. An air -side economizer;
2. Automatic modulating control of the outdoor air
damper; or
3. A design outdoor airflow greater than 3,000 cfm
(1400 Us).
Exceptions:
1. Systems with energy recovery comply-
ing with Section 503.2.6.
2. Multiple -zone systems without direct
digital control of individual zones com-
municating with a central control panel.
3. System with a design outdoor airflow
less than 1,200 cfm (600 Us).
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 49
COMMERCIAL ENERGY EFFICIENCY
4. Spaces where the supply airflow rate
minus any makeup or outgoing transfer
air requirement is less than 1,200 cfm
(600 Us).
503.2.6 Energy recovery ventilation systems. Individual
fan systems that have both a design supply air capacity of
5,000 cfm (236 m3/s) or greater and a minimum outside air
supply of 70 percent or greater of the design supply air
quantity shall have an energy recovery system that provides
a change in the enthalpy of the outdoor air supply of 50 per-
cent or more of the difference between the outdoor air and
return air at design conditions. Provision shall be made to
bypass or control the energy recovery system to permit
cooling with outdoor air where cooling with outdoor air is
required.
Exception: An energy recovery ventilation system shall
not be required in any of the following conditions:
1. Where energy recovery systems are prohibited by
the International Mechanical Code.
2. Laboratory fume hood systems that include at least
one of the following features:
2.1. Variable -air -volume hood exhaust and
room supply systems capable of reducing
exhaust and makeup air volume to 50 per-
cent or less of design values.
2.2. Direct makeup (auxiliary) air supply equal
to at least 75 percent of the exhaust rate,
heated no warmer than 2°F (1. FQ below
room setpoint, cooled to no cooler than 3T
(1.7°C) above room setpoint, no
humidification added, and no simulta-
neous heating and cooling used for
dehumidification control.
3. Systems serving spaces that are not cooled and are
heated to less than 60OF (15.50C).
4. Where more than 60 percent of the outdoor heating
energy is provided from site -recovered or site
solar energy.
5. Heating systems in climates with less than 3,600
HDD.
6. Cooling systems in climates with a 1-percent cool-
ing design wet -bulb temperature less than 64°F
(18°C)•
7. Systems requiring dehumidification that employ
series -style energy recovery coils wrapped around
the cooling coil.
503.2.7 Duct and plenum insulation and sealing. All sup-
ply and return air ducts and plenums shall be insulated with
a minimum of R-5 insulation when located in uncondi-
tioned spaces and a minimum of R-8 insulation when
located outside the building. When located within a building
envelope assembly, the duct or plenum shall be separated
from the building exterior or unconditioned or exempt
spaces by a minimum of R-8 insulation.
Exceptions:
1. When located within equipment.
2. When the design temperature difference between
the interior and exterior of the duct or plenum does
not exceed 15T WC).
All ducts, air handlers and filter boxes shall be sealed.
Joints and seams shall comply with Section 603.9 of the
International Mechanical Code.
503.2.7.1 Duct construction. Ductwork shall be con-
structed and erected in accordance with the International
Mechanical Code.
503.2.7.1.1 Low-pressure duct systems. All longi-
tudinal and transverse joints, seams and connections
of supply and return ducts operating at a static pres-
sure less than or equal to 2 inches w.g. (500 Pa) shall
be securely fastened and sealed with welds, gaskets,
mastics (adhesives), mastic -plus -embedded -fabric
systems or tapes installed in accordance with the man-
ufacturer's installation instructions. Pressure classifi-
cations specific to the duct system shall be clearly
indicated on the construction documents in accor-
dance with the International Mechanical Code.
Exception: Continuously welded and lock-
ing -type longitudinal joints and seams on ducts
operating at static pressures less than 2 inches w.g.
(500 Pa) pressure classification.
503.2.7.1.2 Medium -pressure duct systems. All
ducts and plenums designed to operate at a static pres-
sure greater than 2 inches w.g. (500 Pa) but less than 3
inches w.g. (750 Pa) shall be insulated and sealed in .
accordance with Section 503.2.7. Pressure classifica-
tions specific to the duct system shall be clearly indi-
cated on the construction documents in accordance
with the International Mechanical Code.
503.2.7.1.3 High-pressure duct systems. Ducts
designed to operate at static pressures in excess of 3
inches w.g. (746 Pa) shall be insulated and sealed in
accordance with Section 503.2.7. In addition, ducts
and plenums shall be leak -tested in accordance with
the SMACNA HVAC Air Duct Leakage Test Manual
with the rate of air leakage (CL) less than or equal to
6.0 as determined in accordance with Equation 5-2.
CL=FxP°0 (Equation 5-2)
where:
F = The measured leakage rate in cfm per 100
square feet of duct surface.
P = The static pressure of the test.
Documentation shall be furnished by the designer
demonstrating that representative sections totaling at
50 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
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least 25 percent of the duct area have been tested and
that all tested sections meet the requirements of this
section.
503.2.8 Piping insulation. All piping serving as part of a
heating or cooling system shall be thermally insulated in
accordance with Table 503.2.8.
Exceptions:
1. Factory -installed piping within HVAC equipment
tested and rated in accordance with a test proce-
dure referenced by this code.
2. Factory -installed piping within room fan -coils and
unit ventilators tested and rated according to AHRI
440 (except that the sampling and variation provi-
sions of Section 6.5 shall not apply) and 840,
respectively.
3. Piping that conveys fluids that have a design oper-
ating temperature range between 55°F (13°C) and
105°F (41°C).
4. Piping that conveys fluids that have not been
heated or cooled through the use of fossil fuels or
electric power.
5. Runout piping not exceeding 4 feet (1219 mm) in
length and I inch (25 mm) in diameter between the
control valve and HVAC coil.
TABLE 503.2.8
MINIMUM PIPE INSULATION
(thickness in inches)
FLUID
NOMINAL PIPE DIAMETER
91.5"
> 1.5"
Steam
1112
3
Hot water
1112
2
Chilled water, brine or refrigerant
11/2
11/2
For SI: I inch = 25.4 tutu.
a. Based on insulation having a conductivity (k) not exceeding 0.27 Btu per
inch/h - 110. OF.
b. For insulation with a thermal conductivity notequal to 0.27 Btu- inch/h-fe-°F
at a mean temperatun: of 75°F, the minimum required pipe thickness is adjusted
using the following equation;
T = r[(l+dr)1 *-1 j
where:
T = Adjusted insulation thickness (in).
r = Actual pipe radius (in).
I = Insulation thickness from applicable cell in table (in).
K = New thermal conductivity at 75OF (Btu - in/hr - fP - OF).
k = 0.27 Btu - inft- ff= - OF.
503.2.9 HVAC system completion. Prior to the issuance of
a certificate of occupancy, the design professional shall pro-
vide evidence of system completion in accordance with
Sections 503.2.9.1 through 503.2.9.3.
503.2.9.1 Air system balancing. Each supply air outlet
and zone terminal device shall be equipped with means
for air balancing in accordance with the requirements of
Chapter 6 of the International Mechanical Code. Dis-
charge dampers are prohibited on constant volume fans
and variable volume fans with motors 10 horsepower
(hp) (7.5 kW) and larger.
503.2.9.2 Hydronic system balancing. Individual
hydronic heating and cooling coils shall be equipped
with means for balancing and pressure test connections.
503.2.9.3 Manuals. The construction documents shall
require that an operating and maintenance manual be
provided to the building owner by the mechanical con-
tractor. The manual shall include, at least, the following:
1. Equipment capacity (input and output) and
required maintenance actions.
2. Equipment operation and maintenance manuals.
3. HVAC system control maintenance and calibra-
tion information, including wiring diagrams, sche-
matics, and control sequence descriptions.
Desired or field -determined setpoints shall be per-
manently recorded on control drawings, at control
devices or, for digital control systems, in program-
ming comments.
4. A complete written narrative of how each system
is intended to operate.
503.2.10 Air system design and control. Each HVAC sys-
tem having a total fan system motor nameplate horsepower
(hp) exceeding 5 horsepower (hp) (3.7 kW) shall meet the
provisions of Sections 503.2.10.1 through 503.2.10.2.
503.2.10.1 Allowable fan floor horsepower. Each
HVAC system at fan system design conditions shall not
exceed the allowable fan system motor nameplate hp
(Option 1) or fan system bhp (Option 2) as shown in
Table 503.2.10.1(1). This includes supply fans, return/
relief fans, and fan -powered temtinal units associated
with systems providing heating or cooling capability.
Exceptions:
1. Hospital and laboratory systems that utilize
flow control devices on exhaust and/or return to
maintain space pressure relationships neces-
sary for occupant health and safety or environ-
mental control shall be permitted to use
variable volume fan power limitation.
2. Individual exhaust fans with motor nameplate
horsepower of I hp (0.7 kW) or less.
3. Fans exhausting air from fume hoods. (Note: If
this exception is taken, no related exhaust side
credits shall be taken from Table 503.2.10.1(2)
and the Fume Exhaust Exception Deduction
must be taken from Table 503.2.10.1(2).
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TABLE 503.2.10.1(1)
EAN POWFR LIMITATION
LIMIT
CONSTANT VOLUME
VARIABLE VOLUME
Option 1: Fan system motor nameplate hp
Option 2: Fan system bhp
Allowable nameplate motor hp
Allowable fan system bhp
hp 5 CFMs *0.0011
bhp 5 CFMs *0.00094 +A
hp <_ CFMs *0.0015
bhp < CFMs *0.0013 +A
where:
CFM, = The maximum design supply airflow rate to conditioned spaces served by the system in cubic feet per minute.
hp = The maximum combined motor nameplate horsepower.
Bhp = The maximum combined fan brake horsepower.
= Sum of [PD x CFMp / 41311.
where:
PD = Each applicable pressure drop adjustment from Table 503.2.10.1(2) in. w.c.
TABLE 503.2.10.1(2)
FAN POWER LIMITATION PRESSURE DROP ADJUSTMENT
DEVICE
ADJUSTMENT
Credits
Fully ducted return and/or exhaust air systems
0.5 in w.c.
Return and/or exhaust airflow control devices
0.5 in w.c
Exhaust filters, scrubbers or other exhaust treatment.
The pressure drop of device calculated at fan system design -
condition.
particulate filtration credit: MERV 9 thin 12
0.5 in w.c.
Particulate filtration credit: MERV 13 thm 15
0.9 in w.c.
Particulate filtration credit: MERV 16. and greater and electronically
enhanced filters
Pressure drop calculated at 2x clean filter pressure drop at fan system
design condition.
Carbon and other gas -phase air cleaners
Clean filter pressure drop at fan system design condition.
Heat recovery device
Pressure drop of device at fan system design condition.
Evaporative humidifier/cooler in series with another cooling coil
Sound attenuation section
Pressure drop of device at fan system design conditions
0.15 in w.c.
Deductions
Fume hood exhaust exception
(requited if Section 503.2.10.1, Exception 3, is taken)
-1.0 in w.c.
503.2.10.2 Motor nameplate horsepower. For each
fan, the selected fan motor shall be no larger than the first
available motor size greater than the brake horsepower
(bhp). The fan brake horsepower (bhp) shall be indicated
on the design documents to allow for compliance verifi-
cation by the code official.
Exceptions:
1. For fans less than 6 bhp, where the first avail-
able motor larger than the brake horsepower
has a nameplate rating within 50 percent of the
bhp, selection of the next larger nameplate
motor size is allowed.
2. For fans 6 bhp and larger, where the first avail-
able motor larger than the bhp has a nameplate
rating within 30 percent of the bhp, selection of
the next larger nameplate motor size is allowed.
503.2.11 Heating outside a building. Systems installed to
provide heat outside a building shall be radiant systems.
Such heating systems shall be controlled by an occupancy
sensing device or a timer switch, so that the system is auto-
matically deenergized when no occupants are present.
503.3 Simple HVAC systems and equipment (Prescriptive).
This section applies to buildings served by unitary or packaged
HVAC equipment listed in Tables 503.2.3(1) through
503.2.3(5), each serving one zone and controlled by a single
thermostat in the zone served. It also applies to two -pipe heat-
ing systems serving one or more zones, where no cooling sys-
tem is installed.
This section does not apply to fan systems serving multiple
zones, nonunitary or nonpackaged HVAC equipment and sys-
tems or hydronic or steam heating and hydronic cooling equip-
ment and distribution systems that provide cooling or cooling 1
and heating which are covered by Section 503.4.
503.3.1 Economizers. Supply air economizers shall be pro-
vided on each cooling system as shown in Table 503.3.1(1).
52
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
Economizers shall be capable of providing 100-percent
outdoor air, even if additional mechanical cooling is
required to meet the cooling load of the building. Systems
shall provide a means to relieve excess outdoor air during
economizer operation to prevent overpressurizing the build-
ing. The relief air outlet shall be located to avoid
recirculation into the building. Where a single room or
space is supplied by multiple air systems, the aggregate
capacity of those systems shall be used in applying this
requirement.
Exceptions:
1. Where the cooling equipment is covered by the
minimum efficiency requirements of Table
503.2.3(1) or 503.2.3(2) and meets or exceeds the
minimum cooling efficiency requirement (EER)
by the percentages shown in Table 503.3.1(2).
2. Systems with air or evaporatively cooled
condensors and which serve spaces with open case
refrigeration or that require filtration equipment in
order to meet the minimum ventilation require-
ments of Chapter 4 of the International Mechani-
cal Code.
TABLE 503.3.1(1)
ECONOMIZER REQUIREMENTS
CLIMATEZONES
ECONOMIZER REQUIREMENT
IA, 1B, 2A, 7, 8
No requirement
2B, 3A, 3B, 3C, 4A, 4B,
4C, 5A, 5B, 5C, 6A, 6B
Economizers on all cooling systems
>_ 54,000 Btu/h-
For SI: I British thermal unit per hour = 0.293 W.
a. The total capacity of all systems without economizers shall not exceed
480,000 Bm/h per building, or 20 percent of its air economizer capacity,
whichever is greater.
TABLE 503.3.1(2)
EQUIPMENT EFFICIENCY PERFORMANCE
EXCEPTION FOR ECONOMIZERS
CLIMATE ZONES
COOLING EQUIPMENT PERFORMANCE
IMPROVEMENT (EER OR IPLV)
2B
10% Efficiency Improvement
3B
15% Efficiency Improvement
4B
20% Efficiency Improvement
503.3.2 Hydronic system controls. Hydronic systems of at
least 300,000 Broth (87,930 W) design output capacity sup-
plying heated and chilled water to comfort conditioning sys-
tems shall include controls that meet the requirements of
Section 503.4.3.
503.4 Complex HVAC systems and equipment. (Prescrip-
tive). This section applies to buildings served by HVAC equip-
ment and systems not covered in Section 503.3.
503.4.1 Economizers. Supply air economizers shall be pro-
vided on each cooling system according to Table
503.3.1(1). Economizers shall be capable of operating at
100 percent outside air, even if additional mechanical cool-
ing is required to meet the cooling load of the building.
Exceptions:
1. Systems utilizing water economizers that are capa-
ble of cooling supply air by direct or indirect evap-
oration or both and providing 100 percent of the
expected system cooling load at outside air tem-
peratures of 50°F (10°C) dry bulb/45°F (7°C) wet
bulb and below.
2. Where the cooling equipment is covered by the
minimum efficiency requirements of Table
503.2.3(1), 503.2.3(2), or 503.2.3(6) and meets or
exceeds the minimum EER by the percentages
shown in Table 503.3.1(2)
3. Where the cooling equipment is covered by the
minimum efficiency requirements of Table
503.2.3(7) and meets or exceeds the minimum
integrated part load value (IPLV) by the percent-
ages shown in Table 503.3.1(2).
503.4.2 Variable air volume (VAV) fan control. Individual
VAV fans with motors of 10 horsepower (7.5 kW) or greater
shall be:
1. Driven by a mechanical or electrical variable speed
drive; or
2. The fan motor shall have controls or devices that will
result in fan motor demand of no more than 30 percent
of their design wattage at 50 percent of design airflow
when static pressure set point equals one-third of the
total design static pressure, based on manufacturer's
certified fan data.
For systems with direct digital control of individual zone
boxes reporting to the central control panel, the static pres-
sure set point shall be reset based on the zone requiring the
most pressure, i.e., the set point is reset lower until one zone
damper is nearly wide open.
503A.3 Hydronic systems controls. The heating of fluids
that have been previously mechanically cooled and the cool-
ing of fluids that have been previously mechanically heated
shall be limited in accordance with Sections 503.4.3.1
through 503.4.3.3. Hydronic heating systems comprised of
multiple -packaged boilers and designed to deliver condi-
tioned water or steam into a common distribution system
shall include automatic controls capable of sequencing
operation of the boilers. Hydronic heating systems com-
prised of a single boiler and greater than 500,000 Btu/h
input design capacity shall include either a multistaged or
modulating burner.
503A.3.1 Three -pipe system. Hydronic systems that
use a common return system for both hot water and
chilled water are prohibited.
503A.3.2 Two -pipe changeover system. Systems that
use a common distribution system to supply both heated
and chilled water shall be designed to allow a dead band
between changeover from one mode to the other of at
least 15°F (8.3°C) outside air temperatures; be designed
to and provided with controls that will allow operation in
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 53
COMMERCIAL ENERGY EFFICIENCY
one mode for at least 4 hours before changing over to the
other mode; and be provided with controls that allow
heating and cooling supply temperatures at the change-
over point to be no more than 30°F (16.7°C) apart.
503.4.3.3 Hydronic (water loop) heat pump systems.
Hydronic heat pump systems shall comply with Sections
503.4.3.3.1 through 503.4.3.3.3.
503.4.3.3.1 Temperature dead band. Hydronic heat
pumps connected to a common heat pump water loop
with central devices for heat rejection and heat addi-
tion shall have controls that are capable of providing a
heat pump water supply temperature dead band of at
least 20°F (11.PQ between initiation of heat rejec-
tion and heat addition by the central devices.
Exception: Where a system loop temperature
optimization controller is installed and can deter-
mine the most efficient operating temperature
based on realtime conditions of demand and
capacity, dead bands of less than 20OF (I I °C) shall
be permitted.
503A.3.3.2 Heat rejection. Heat rejection equipment
shall comply with Sections 503.4.3.3.2.1 and
503.4.3.3.2.2.
Exception: Where it can be demonstrated that a
heat pump system will be required to reject heat
throughout the year.
503A.3.3.2.1 Climate Zones 3 and 4. For Climate
Zones 3 and 4 as indicated in Figure 301.1 and
Table 301.1:
1. If a closed-circuit cooling tower is used
directly in the heat pump loop, either an
automatic valve shall be installed to bypass
all but a minimal flow of water around the
tower, or lower leakage positive closure
dampers shall be provided.
2. If an open -circuit tower is used directly in
the heat pump loop, an automatic valve shall
be installed to bypass all heat pump water
flow around the tower.
3. If an open- or closed-circuit cooling tower is
used in conjunction with a separate heat
exchanger to isolate the cooling tower from
the heat pump loop, then heat loss shall be
controlled by shutting down the circulation
pump on the cooling tower loop.
503.4.3.3.2.2 Climate Zones 5 through 8. For cli-
mate Zones 5 through 8 as indicated in Figure
301.1 and Table 301.1, if an open- or closed-circuit
cooling tower is used, then a separate heat
exchanger shall be required to isolate the cooling
tower from the heat pump loop, and heat loss shall
be controlled by shutting down the circulation
pump on the cooling tower loop and providing an
automatic valve to stop the flow of fluid.
503.4.3.3.3 Two position valve. Each hydronic heat
pump on the hydronic system having a total pump
system power exceeding 10 horsepower (hp) (T5
kW) shall have a two -position valve.
503A.3.4 Part load controls. Hydronic systems greater
than or equal to 300,000 Broth (87 930 W) in design out-
put capacity supplying heated or chilled water to comfort
conditioning systems shall include controls that have the
capability to:
1. Automatically reset the supply -water tempera-
tures using zone -return water temperature, build-
ing -return water temperature, or outside air
temperature as an indicator of building heating or
cooling demand. The temperature shall be capable
of being reset by at least 25 percent of the design
supply -to -return water temperature difference; or
2. Reduce system pump flow by at least 50 percent of
design flow rate utilizing adjustable speed drive(s)
on pump(s), or multiple -staged pumps where at
least one-half of the total pump horsepower is
capable of being automatically turned off or con-
trol valves designed to modulate or step down, and
close, as a function of load, or other approved
means.
503A.3.5 Pump isolation. Chilled water plants includ-
ing more than one chiller shall have the capability to
reduce flow automatically through the chiller plant when i.
a chiller is shut down. Chillers piped in series for the pur-
pose of increased temperature differential shall be con-
sidered as one chiller.
Boiler plants including more than one boiler shall have
the capability to reduce flow automatically through the
boiler plant when a boiler is shut down.
503AA Heat rejection equipment fan speed control.
Each fan powered by a motor of 7.5 hp (5.6 kW) or larger
shall have the capability to operate that fan at two-thirds of
full speed or less, and shall have controls that automatically
change the fan speed to control the leaving fluid tempera-
ture or condensing temperature/pressure of the heat rejec-
tion device.
Exception: Factory -installed heat rejection devices I
within HVAC equipment tested and rated in accordance
with Tables 503.2.3(6) and 503.2.3(7).
503.4.5 Requirements for complex mechanical systems
serving multiple zones. Sections 503.4.5.1 through
503.4.5.3 shall apply to complex mechanical systems serv-
ing multiple zones. Supply air systems serving multiple
zones shall be VAV systems which, during periods of occu-
pancy, are designed and capable of being controlled to
reduce primary air supply to each zone to one of the follow-
ing before reheating, retooling or mixing takes place:
1. Thirty percent of the maximum supply air to each
zone.
54 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
2. Three hundred cfm (142 Us) or less where the maxi-
mum flow rate is less than 10 percent of the total fan
system supply airflow rate.
3. The minimum ventilation requirements of Chapter 4
of the International Mechanical Code.
Exception: The following define when individual zones
or when entire air distribution systems are exempted
from the requirement for VAV control:
1. Zones where special pressurization relationships
or cross -contamination requirements are such that
VAV systems are impractical.
2. Zones or supply air systems where at least 75 per-
cent of the energy for reheating or for providing
warm air in mixing systems is provided from a
site -recovered or site -solar energy source.
3. Zones where special humidity levels are required
to satisfy process needs.
4. Zones with a peak supply air quantity of 300 cfm
(142 Us) or less and where the flow rate is less than
10 percent of the total fan system supply airflow
rate.
5. Zones where the volume of air to be reheated,
recooled or mixed is no greater than the volume of
outside air required to meet the minimum ventila-
tion requirements of Chapter 4 of the International
Mechanical Code.
6. Zones or supply air systems with thermostatic and
humidistatic controls capable of operating in
sequence the supply of heating and cooling energy
to the zone(s) and which are capable of preventing
reheating, recoohng, mixing or simultaneous sup-
ply of air that has been previously cooled, either
mechanically or through the use of economizer
systems, and air that has been previously mechani-
cally heated.
503.4.5.1 Single duct variable air volume (VAV) sys-
tems, terminal devices. Single duct VAV systems shall
use terminal devices capable of reducing the supply of
primary supply air before reheating or recooling takes
place.
503A.5.2 Dual duct and mixing VAV systems, termi-
nal devices. Systems that have one warm air duct and
one cool air duct shall use terminal devices which are
capable of reducing the flow from one duct to a minimum
before mixing of air from the other duct takes place.
503.4.5.3 Single fan dual duct and mixing VAV sys-
tems, economizers. Individual dual duct or mixing heat-
ing and cooling systems with a single fan and with total
capacities greater than 90,000 Btu/h [(26 375 W) 7.5
tons] shall not be equipped with air economizers.
503A5.4 Supply -air temperature reset controls. Mul-
tiple zone HVAC systems shall include controls that
automatically reset the supply -air temperature in
response to representative building loads, or to outdoor
air temperature. The controls shall be capable of reset-
ting the supply air temperature at least 25 percent of the
difference between the design supply -air temperature
and the design room air temperature.
Exceptions:
1. Systems that prevent reheating, recooling or
mixing of heated and cooled supply air.
2. Seventy five percent of the energy for reheating
is from site -recovered or site solar energy
sources.
3. Zones with peak supply air quantities of 300
cfm (142 Us) or less.
503.4.6 Heat recovery for service water heating. Con-
denser heat recovery shall be installed for heating or reheat-
ing of service hot water provided the facility operates 24
hours a day, the total installed heat capacity of water-cooled
systems exceeds 6,000,000 Btu/hr of heat rejection, and the
design service water heating load exceeds 1,000,000 Btu/h.
The required heat recovery system shall have the capacity
to provide the smaller of:
1. Sixty percent of the peak heat rejection load at design
conditions; or
2. The preheating required to raise the peak service hot
water draw to 85°F (29°C).
Exceptions:
1. Facilities that employ condenser heat recovery for
space heating or reheat purposes with a heat recov-
ery design exceeding 30 percent of the peak
water-cooled condenser load at design conditions.
2. Facilities that provide 60 percent of their service
water heating from site solar or site recovered
energy or from other sources.
SECTION 504
SERVICE WATER HEATING
(Mandatory)
504.1 General. This section covers the minimum efficiency of,
and controls for, service water -heating equipment and insula-
tion of service hot water piping.
504.2 Service water -heating equipment performance effi-
ciency. Water -heating equipment and hot water storage tanks
shall meet the requirements of Table 504.2. The efficiency shall
be verified through data furnished by the manufacturer or
through certification under an approved certification program.
504.3 Temperature controls. Service water -heating equip-
ment shall be provided with controls to allow .a setpoint of
I10°F (43°C) for equipment serving dwelling units and 90°F
(32°C) for equipment serving other occupancies. The outlet
temperature of lavatories in public facility rest rooms shall be
limited to 110OF (430C).
504.4 Heat traps. Water -heating equipment not supplied with
integral heat traps and serving noacirculating systems shall be
provided with heat traps on the supply and discharge piping
associated with the equipment.
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 55
COMMERCIAL ENERGY EFFICIENCY
:i
TABLE 504.2
MINIMUM PERFORMANCE OF WATER -HEATING EQUIPMENT
SIZE CATEGORY
SUBCATEGORY OR
PERFORMANCE
TEST
EQUIPMENT TYPE
(input)
RATING CONDITION
REQUIRED a.b
PROCEDURE
< 12 kW
Resistance
0.97 - 0.0013211, EF
DOE 10 CFR Part 430
> 12 kW
Resistance
1.73V+ 155 SL, Broth
ANSI Z21.103
Water heaters,
Electric
< 24 amps and
Heat pump
0.93 - 0.00132 V, EF
DOE 10 CFR Part 430
<_ 250 volts
5 75,000 Btu/h
>_ 20 gal
0.67 - 0.0019 V, EF
DOE 10 CFR Part 430
> 75,000 Btu/h and
< 155,000 Btu/h
< 4,000 Btu/h/gal
80% EEr.
Q / 800 + I lOJ SL, Btu/h
Stora a water heaters,
g
Gas
ANSI Z21.103
> 155,000 Btu/h
< 4,000 Btu/h/gal
E
Q / 800 + 1 11 IO,r SL, Btu/h
> 50,000 Btu/h and
>_ 4,000 (Btu/h)/gal
0.62 - 0.001914, EF
DOE 10 CFR Part 430
< 200,000 Btu/h`
and < 2 gal
>— 200,000 Btu/h
>_ 4,000 Btu/h/gal and
4,000
80% E,
Instantaneous water heaters,
Gas
10 gal
ANSI Z21.103
>_ 200,000 Btu/h
> 4,000 Btu/h/gal and
>_ 10 gal
80% E
Q / 800 + 110.E SL, Btu/h
<_ 105,000 Broth
>_ 20 gal
0.59 - 0.0019V, EF
DOE 10 CFR Part 430
Storage water heaters,
Oil
> 105,000 Btu/h
< 4,000 Btu/h/gal
78% E
Q / 800 + 110 V SL, Btu/b
ANSI Z21.103
<_ 210,000 Btu/h
4,000 Btu/h/ga) and
0.59 - 0.001914, EF
DOE 10 CFR Part 430
< 2 gal
> 210000 Btu/h
Z 4,000 Btu/h/gal and
80% E,
Instantaneous water heaters,
Oil
,
< 10 gal
ANSI Z21.103
> 210,000 Btu/h
> 4,000 Bm/h/gal and
78% E
>_10gal
Q/800+110 V SL,Btuth
Hot water supply boilers,
2 300,000 Btu/h and
>_ 4,000 Btuth/gal and
80% E,
Gas and Oil
<12,500,000 Bluth
< 10 gal
Hot water supply boilers,
>_ 300,000 Btu/h and
>_ 4,000 Btu/h/gal and
80% E
ANSIZ21.103
Gas
<12,500,000 Bluth
>_ 10 gal
Q / 800 + 11 V SL, Btu/h
Hot water supply boilers,
> 300,000 Btu/h and
> 4,000 Btu/h/gal and
78% E
Oil
<12,500,000 Broth
> 10 gal
Q / 800 + I I O V SL, Btu/h
Pool heaters,
All
—
78% E,
ASHRAE146
Gas and Oil
Heat pump pool heaters
All
—
4.0 COP
AHRI 1160
Minimum insulation
Unfired storage tanks
All
—
requirement R-12.5
(none)
(h - W °F)Btu
For SC °C = [(°F) - 32]/1.8, 1 British thermal unit per hour = 0.2931 W, t gallon = 3.785 L, 1 British thermal unit per hour per gallon = 0.078 W/L.
a. Energy factor (EF) and thermal efficiency (E,) are minimum requirements. In the EF equation, V is the rated volume in gallons. -
b. Standbyloss (SL) is the maximumBm/h based on a nominal70aFtemperaturedifference betweenstored water andambientrequirements. In theSL equation, Q is -
the nameplate inputrate in Btu/h. In the SLequation for electric water heaters, Via the rated volume in gallons. In the SL equation for oil andgas water heaters and
boilers, V is the rated volume in gallons.
a Instantaneous water heaters with inputrates below 200,000 Btu/h mustcomply with theserequirements if thewaterheateris designed to heatwater to temperatures -
180aF or higher. -
56 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
504.5 Pipe insulation. For automatic -circulating hot water
systems, piping shall be insulated with 1 inch (25 mm) of insu-
lation having a conductivity not exceeding 0.27 Btu per inch/h
x ft2 x °F (1.53 W per 25 mm/m2 x K). The first 8 feet (2438
mm) of piping in noncirculating systems served by equipment
without integral heat traps shall be insulated with 0.5 inch (12.7
mm) of material having a conductivity not exceeding 0.27 Btu
per inch/h x ft2 x °F (1.53 W per 25 mm/m2 x K).
504.6 Hot water system controls. Automatic -circulating hot
water system pumps or heat trace shall be arranged to be conve-
niently turned off automatically or manually when the hot
water system is not in operation.
504.7 Pools. Pools shall be provided with energy conserving
measures in accordance with Sections 504.7.1 through
504.7.3.
504.7.1 Pool heaters. All pool heaters shall be equipped
with a readily accessible on -off switch to allow shutting off
the heater without adjusting the thermostat setting. Pool
heaters fired by natural gas or LPG shall not have continu-
ously burning pilot lights.
504.7.2 Time switches. Time switches that can automati-
cally mm off and on heaters and pumps according to a preset
schedule shall be installed on swimming pool heaters and
pumps.
Exceptions:
1. Where public health standards require 24-hour
pump operation.
2. Where pumps are required to operate solar -and
waste -heat -recovery pool heating systems.
504.7.3 Pool covers. Heated pools shall be equipped with a
vapor retardant pool cover on or at the water surface. Pools
heated to more than 90°F (32°C) shall have a pool cover
witha minimum insulation value of R-12.
Exception: Pools deriving over 60 percent of the energy
for heating from site -recovered energy or solar energy
source.
SECTION 505
ELECTRICAL POWER AND LIGHTING SYSTEMS
(Mandatory)
505.1 General (Mandatory). This section covers lighting sys-
tem controls, the connection of ballasts, the maximum lighting
power for interior applications and minimum acceptable light-
ing equipment for exterior applications.
Exception: Lighting within dwelling units where 50 per-
cent or more of the permanently installed interior light fix-
tures are fitted with high -efficacy lamps.
505.2 Lighting controls (Mandatory). Lighting systems shall
be provided with controls as required in Sections 505.2.1,
505.2.2, 505.2.3 and 505.2.4.
505.2.1 Interior lighting controls. Each area enclosed by
walls or floor -to -ceiling partitions shall have at least one
manual control for the lighting serving that area. The
required controls shall be located within the area served by
the controls or be a remote switch that identifies the lights
served and indicates their status.
Exceptions:
1. Areas designated as security or emergency areas
that must be continuously lighted.
2. Lighting in stairways or corridors that are elements
of the means of egress.
505.2.2 Additional controls. Each area that is required to
have a manual control shall have additional controls that
meet the requirements of Sections 505.2.2.1 and 505.2.2.2.
505.2.2.1 Light reduction controls. Each area that is
required to have a manual control shall also allow the
occupant to reduce the connected lighting load in a rea-
sonably uniform illumination pattern by at least 50 per-
cent. Lighting reduction shall be achieved by one of the
following or other approved method:
1. Controlling all lamps or luminaires;
2. Dual switching of alternate rows of luminaires,
alternate luminaires or alternate lamps;
3. Switching the middle lamp luminaires independ-
ently of the outer lamps; or
4. Switching each luminaire or each lamp.
Exceptions:
1. Areas that have only one luminaire.
2. Areasthat are controlled by an occupant -sens-
ing device.
3. Corridors, storerooms, restrooms or public lob-
bies.
4. Sleeping unit (see Section 505.2.3).
5. Spaces that use less than 0.6 watts per square
foot (6.5 W/m2).
505.2.2.2 Automatic lighting shutoff. Buildings larger
than 5,000 square feet (465 m2) shall be equipped with an
automatic control device to shut off lighting in those
areas. This automatic control device shall function on
either:
1. A scheduled basis, using time -of -day, with an
independent program schedule that controls the
interior lighting in areas that do not exceed 25,000
square feet (2323 m2) and are not more than one
floor; or
2. An occupant sensor that shall turn lighting off
within 30 minutes of an occupant leaving a space;
or
3. A signal from another control or alarm system that
indicates the area is unoccupied.
Exception: The following shall not require an auto-
matic control device:
1. Sleeping unit (see Section 505.2.3).
2. Lighting in spaces where patient care is directly
provided.
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 57
COMMERCIAL ENERGY EFFICIENCY
3. Spaces where an automatic shutoff would
endanger occupant safety or security.
505.2.2.2.1 Occupant override. Where an automatic
time switch control device is installed to comply with
Section 505.2.2.2, Item 1, it shall incorporate an over-
ride switching device that:
1. Is readily accessible.
2. Is located so that a person using the device can
see the lights or the area controlled by that
switch, or so that the area being lit is annunci-
ated.
3. Is manually operated.
4. Allows the lighting to remain on for no more
than 2 hours when an override is initiated.
5. Controls an area not exceeding 5,000 square
feet (465 m2).
Exceptions:
1. In malls and arcades, auditoriums, sin-
gle -tenant retail spaces, industrial facilities
and arenas, where captive -key override is
utilized, override time shall be permitted to
exceed 2 hours.
2. In malls and arcades, auditoriums, sin-
gle -tenant retail spaces, industrial facilities
and arenas, the area controlled shall not
exceed 20,000 square feet (1860 mz).
505.2.2.2.2 Holiday scheduling. If an automatic time
switch control device is installed in accordance with
Section 505.2.2.2, Item 1, it shall incorporate an auto-
matic holiday scheduling feature that turns off all
loads for at least 24 hours, then resumes the normally
scheduled operation.
Exception: Retail stores and associated malls, res-
taurants, grocery stores, places of religious wor-
ship and theaters.
505.2.2.3 Daylight zone control. Daylight zones, as
defined by this code, shall be provided with individual
controls that control the lights independent of general
area lighting. Contiguous daylight zones adjacent to ver-
tical fenestration are allowed to be controlled by a single
controlling device provided that they do not include
zones facing more than two adjacent cardinal orienta-
tions (i.e., north, east, south, west). Daylight zones under
skylights more than 15 feet (4572 mm) from the perime-
ter shall be controlled separately from daylight zones
adjacent to vertical fenestration.
Exception: Daylight spaces enclosed by walls or
ceiling height partitions and containing two or fewer
light fixtures are not required to have a separate
switch for general area lighting.
505.2.3 Sleeping unit controls. Sleeping units in hotels,
motels, boarding houses or similar buildings shall have at
least one master switch at the main entry door that controls
all permanently wired luminaires and switched receptacles,
except those in the bathroom(s). Suites shall have a control
meeting these requirements at the entry to each room or at
the primary entry to the suite.
505.2.4 Exterior lighting controls. Lighting not desig-
nated for dusk -to -dawn operation shall be controlled by
either a combination of a photosensor and a time switch, or
an astronomical time switch. Lighting designated for
dusk -to -dawn operation shall be controlled by an astronom-
ical time switch or photosensor. All time switches shall be
capable of retaining programming and the time setting dur-
ing loss of power for a period of at least 10 hours.
505.3 Tandem wiring (Mandatory). The following
luminaires located within the same area shall be tandem wired:
1. Fluorescent luminaires equipped with one, three or
odd -numbered lamp configurations, that are recess -
mounted within 10 feet (3048 mm) center -to -center of
each other.
2. Fluorescent luminaires equipped with one, three or any
odd -numbered lamp configuration, that are pendant- or
surface -mounted within 1 foot (305 mm) edge- to -edge
of each other.
Exceptions:
1. Where electronic high -frequency ballasts are used
2. Luminaires on emergency circuits.
3. Luminaires with no available pair in the same area.
505.4 Exit signs (Mandatory). Internally illuminated exit
signs shall not exceed 5 watts per side.
505.5 Interior lighting power requirements (Prescriptive).
A building complies with this section if its total connected
lighting power calculated under Section 505.5.1 is no greater
than the interior lighting power calculated under Section
505.5.2.
505.5.1 Total connected interior lighting power. The total
connected interior lighting power (watts) shall be the sum of
the watts of all interior lighting equipment as determined in
accordance with Sections 505.5.1.1 through 505.5.1.4.
Exceptions:
1. The connected power associated with the follow-
ing lighting equipment is not included in calcu-
lating total connected lighting power.
1.1. Professional sports arena playing field
lighting.
1.2. Sleeping unit lighting in hotels, motels,
boarding houses or similar buildings.
1.3. Emergency lighting automatically off dur-
ing normal building operation.
1.4. Lighting in spaces specifically designed
for use by occupants with special lighting
needs including the visually impaired
visual impairment and other medical and
age -related issues.
1.5. Lighting in interior spaces that have been
specifically designated as a registered inte-
rior historic landmark.
58 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
1.6. Casino gaming areas.
2. Lighting equipment used for the following shall
be exempt provided that it is in addition to gen-
eral lighting and is controlled by an independent
control device:
2.1. Task lighting for medical and dental pur-
poses.
2.2. Display lighting for exhibits in galleries,
museums and monuments.
3. Lighting for theatrical purposes, including per-
formance, stage, film production and video pro-
duction.
4. Lighting for photographic processes.
5. Lighting integral to equipment or instrumenta-
tion and is installed by the manufacturer.
6. Task lighting for plant growth or maintenance.
7. Advertising signage or directional signage.
8. In restaurant buildings and areas, lighting for
food warming or integral to food preparation
equipment.
9. Lighting equipment that is for sale.
10. Lighting demonstration equipment in lighting
education facilities.
11. Lighting approved because of safety or emer-
gency considerations, inclusive of exit lights.
12. Lighting integral to both open and glass -
enclosed refrigerator and freezer cases.
13. Lighting in retail display windows, provided the
display area is enclosed by ceiling -height parti-
tions.
14. Furniture mounted supplemental task lighting
that is controlled by automatic shutoff.
505.5.1.1 Screw lamp holders. The wattage shall be the
maximum labeled wattage of the luminaire.
505.5.1.2 Low -voltage lighting. The wattage shall be
the specified wattage of the transformer supplying the
system.
505.5.1.3 Other luminaires. The wattage of all other
lighting equipment shall be the wattage of the lighting
equipment verified through data famished by the manu-
facturer or other approved sources.
505.5.1.4 Line -voltage lighting track and plug-in .
busway. The wattage shall be:
1. The specified wattage of the luminaires included
in the system with a minimum of 30 W/lin ft. (98
W/lin. m);
2. The wattage limit of the system's circuit breaker;
or
3. The wattage limit of other permanent current limit-
ing device(s) on the system.
505.5.2 Interior lighting power. The total interior lighting
power (watts) is the sum of all interior lighting powers for
all areas in the building covered in this permit. The interior
lighting power is the floor area for each building area type
listed in Table 505.5.2 times the value from Table 505.5.2
for that area. For the purposes of this method, an "area" shall
be defined as all contiguous spaces that accommodate or are
associated with a single building area type as listed in Table
505.5.2. When this method is used to calculate the total inte-
rior lighting power for an entire building, each building area
type shall be treated as a separate area.
TABLE 505.5.2
INTERIOR LIGHTING POWER ALLOWANCES
LIGHTING POWER DENSITY
Building Area Type°
Automotive Facility
0.9
Convention Center
1.2
Court House
1.2
Dining: Bar Lounge/Leisure
1.3
Dining: Cafeteria/Fast Food
1.4
Dining: Family
1.6
Dormitory
1.0 '
Exercise Center
1.0
Gymnasium -
1.1
Healthcare clinic
1.0
Hospital
1.2
Hotel
1.0
Library
1.3
Manufacturing Facility
1.3
Motel
1.0
Motion Picture Theater
1.2
Multifamily
0.7
Museum
1.1
Office
1.0
Parking Garage
0.3
Penitentiary
1.0
Performing Arts Theater
1.6
Police(Fire Station
1.0
Post Office
1.1
Religious Building
1.3
Retail^
1.5
School/University
1.2
Sports Arena
1.1
Town Hall
1.1
(continued)
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 59
COMMERCIAL ENERGY EFFICIENCY
TABLE 505.6.2--continued
INTERIOR LIGHTING POWER ALLOWANCES
LIGHTING POWER DENSITY
Building Area Types
(W/fta)
Transportation
1.0
Warehouse
0.8
Workshop
1.4
For SI: 1 foot = 304.8 mm, 1 watt per square foot = W/0.0929 m2.
a. In cases whereboth ageneral building area type and a more specific building
area type are listed, the more specific building area type shall apply.
b. Where lighting equipment is specified to be installed to highlight specific
merchandise in addition to lighting equipment specified for general lighting
and is switched or dimmed on circuits different from the circuits for general
lighting, the smaller of the actual wattage of the lighting equipment installed
specifically for merchandise, or additional lighting power as determined
below shall be added to the interior lighting power determined in accordance
with this line item.
Calculate the additional lighting power as follows:
Additional Interior Lighting Power Allowance =1000 watts+ (Retail Area I x
0.6 W/ft2) + (Retail Area 2 x 0.6W/ft2)+(Retail Area 3 x 1.4 W/ft2)+(Retail
Area 4 x 2.5 W/ft2).
where:
Retail Area I = The floor area forall products not listed in Retail Area 2,3
or 4.
Retail Area 2 = Thefloorarea used forthesaleof vehicles, sportinggoods
and small electronics.
Retail Area 3 = The floor area used for the sale of furniture, clothing, cos-
metics and artwork.
Retail Area 4 = The floor area used for the sale of jewelry, crystal and
china.
Exception: Other merchandise categories are permitted to be included
in Retail Areas 2 through 4 above, provided that j ustification document-
ing the need for additional lighting power based on visual inspection,
contrast, or other critical display is approved by the authority having
jurisdiction.
505.6 Exterior lighting. (Mandatory). When the power for
exterior lighting is supplied through the energy service to the
building, all exterior lighting, other than low -voltage landscape
lighting, shall comply with Sections 505.6.1 and 505.6.2.
Exception: Where approved because of historical, safety,
signage or emergency considerations.
505.6.1 Exterior building grounds lighting. All exterior
building grounds luminaires that operate at greater than 100
watts shall contain lamps having a minimum efficacy of 60
lumens per watt unless the luminaire is controlled by a
motion sensor or qualifies for one of the exceptions under
Section 505.6.2.
505.6.2 Exterior building lighting power. The total exte-
rior lighting power allowance for all exterior building appli-
cations is the sum of the base site allowance plus the
individual allowances for areas that are to be illuminated
and are permitted in Table 505.6.2(2) for the applicable
lighting zone. Tradeoffs are allowed only among exterior
lighting applications listed in Table 505.6.2(2), Tradable
Surfaces section. The lighting zone for the building exterior
is determined from Table 505.6.2(1) unless otherwise speci-
fied by the local jurisdiction. Exterior lighting for all appli-
cations (except those included in the exceptions to Section
505.6.2) shall comply with the requirements of Section
505.6.1.
Exceptions: Lighting used for the following exterior
applications is exempt when equipped with a control
device independent of the control of the nonexempt
lighting:
1. Specialized signal, directional and marker lighting
associated with transportation;
2. Advertising signage or directional signage;
3. Integral to equipment or instrumentation and is
installed by its manufacturer;
4. Theatrical purposes, including performance,
stage, film production and video production;
5. Athletic playing areas;
6. Temporary lighting;
7. Industrial production, material handling, transpor-
tation sites and associated storage areas;
8. Theme elements in theme/amusement parks; and
9. Used to highlight features of public monuments
and registered historic landmark structures or
buildings.
TABLE 505.6.2(1)
EXTERIOR LIGHTING ZONES
LIGHTING ZONE
DESCRIPTION
I
Developed areas of national parks, state parks,
forest land, and rural areas
Areas predominantly consisting of residential
2
zoning, neighborhood business districts, light
industrial with limited nighttime use and
residential mixed use areas
3
All other areas
High -activity commercial districts in major
4
metropolitan areas as designated by the local
land use planning authority
505.7 Electrical energy consumption. (Mandatory). In
buildings having individual dwelling units, provisions shall be
made to determine the electrical energy consumed by each ten-
ant by separately metering individual dwelling units.
SECTION 506
TOTAL BUILDING PERFORMANCE
506.1 Scope. This section establishes criteria for compliance
using total building performance. The following systems and
loads shall be included in determining the total building perfor-
mance: heating systems, cooling systems, service water heat-
ing, fan systems, lighting power, receptacle loads and process
loads.
506.2 Mandatory requirements. Compliance with this sec-
tion requires that the criteria of Sections 502.4, 503.2, 504 and
505 be met.
60 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
TABLE 505.6.2(2)
INDIVIDUAL LIGHTING POWER ALLOWANCES FOR BUILDING EXTERIORS
Zone 1
Zone 2
Zone 3
Zone 4
Base Site Allowance
(Base allowance may be
500 W
600 W
750 W
1300 W
used in tradable or
nontradable surfaces.)
Uncovered Parking Areas
Parking areas and drives
0.04 W/ft'
0.05 W/ft'
0.10 W/ft'
0.13 W/fe
Building Grounds
Walkways less than
0.7 WAinear foot
0.7 WAinear foot
0.8 WAinear foot
1.0 WAinear foot
10 feet wide
Walkways 10 feet wide
or greater, plaza areas
0.14 W/fP
0.14 W/ft'
0.16 W/ft'
0.2 W/ft'
special feature areas
Stairways
0.75 W/ft2
1.0 W/ft'
1.0 Wife
LO W/ft'
Pedestrian tunnels
0.15 W/f,
0.15 W/ftil
0.2 W/ft'
0.3 W1W
Tradable Surfaces
(Lighting power
Building Entrances and Exits
densities for uncovered
parking areas, building
Main entries
20 WAinear foot
20 WAinear foot
30 W/linear foot
30 WAinear foot
grounds, building
of door width
of door width
of door width
of door width
entrances and exits,
20 W/linear foot
20 W/linear foot
20 WAinear foot
20 WAinear foot
canopies and overhangs
areas
Other doors
of door width
of door width
of door width
of door width
and outdoor sales
may be traded.)
Entry canopies
0.25 WHO
0.25 W/ft'
0.4 W/ft'
0.4 W/tt'
Sales Canopies
Free-standing and
0.6 W/ft'
0.6 W/ft'
0.8 W/ft'
1.0 W/ff
attached
Outdoor Sales
Open areas (including
0.25 W/ft2
0.25 W/ft'
0.5 W/ft2
0.7 W/ft2
vehicle sales lots)
-
Street frontage for
vehicle sales lots in
addition to "open area"
No allowance
10 W/linear foot
10 WAinear foot
30 WAinear foot
allowance
0.1 W/flfor each
0.15 W/f0 for each
0.2 W/ft' for each
illuminated wall or
illuminated wall or
illuminated wall or
Building facades
No allowance
surface or 2.5 WAinear
surface or 3.75 WAinear
surface or 5.0 WAinear
foot for each illuminated
foot for each illuminated
foot for each illuminated
Nontradable Surfaces
wall or surface length
wall or surface length
wall or surface length
(Lighting power density
calculations for the
Automated teller
270 W per location plus
270 W per location plus
270 W per location plus
270 W per location plus
following applications
machines and night
90 W per additional
90 W per additional
90 W per additional
90 W per additional
can be used only for the
depositories
ATM per location
ATM per location
ATM per location
ATM per location
specific application and
cannot be traded between
Entrances and gatehouse
0.75 W/ft' of covered
0.75 W/ft' of covered
0.75 WHO of covered
0.75 W/ft2 of covered
surfaces or with other
inspection stations at
and uncovered area
and uncovered area
and uncovered area
and uncovered area
exterior lighting. The
guarded facilities
following allowances are
Loading areas for law
in addition many
allowance otherwise
enforcement, fire,
0.5 W/ft' of covered
0.5 W/ft2 of covered
0.5 W/ft2 of covered
0.5 WHO of covered
permitted in the -
ambulance and other
and uncovered area
and uncovered area
and uncovered area
and uncovered area
"Tradable Surfaces"
emergency service
vehicles
section of this table.)
Drive -up windows/doors
400 W per drive -through
400 W per drive -through
400 W per drivathrough
400 W per drive -through
Parking near 24-hour
800 W per main entry
800 W per main entry
800 W per main entry
800 W per main entry
retail entrances
For SI: I foot = 304.8 mm, 1 watt per square foot = W/0.0929 m2.
2009 INTERNATIONAL ENERGY CONSERVATION CODE®
61
COMMERCIAL ENERGY EFFICIENCY
506.3 Performance -based compliance. Compliance based on
total building performance requires that a proposed building
(proposed design) be shown to have an annual energy cost that
is less than or equal to the annual energy cost of the standard
reference design. Energy prices shall be taken from a source
approved by the code official, such as the Department of
Energy, Energy Information Administration's State Energy
Price and Expenditure Report. Code officials shall be permit-
ted to require time -of -use pricing in energy cost calculations.
Nondepletable energy collected off site shall be treated and
priced the same as purchased energy. Energy from
nondepletable energy sources collected on site shall be omitted
from the annual energy cost of the proposed design.
Exception: Jurisdictions that require site energy (1 kWh =
3413 Btu) rather than energy cost as the metric of compari-
son.
506.4 Documentation. Documentation verifying that the
methods and accuracy of compliance software tools conform
to the provisions of this section shall be provided to the code
official.
506.4.1 Compliance report. Compliance software tools
shall generate a report that documents that the proposed
design has annual energy costs less than or equal to the
annual energy costs of the standard reference design. The
compliance documentation shall include the following
information:
1. Address of the building;
2. An inspection checklist documenting the building
component characteristics of the proposed design as
listed in Table 506.5,1(1). The inspection checklist
shall show the estimated annual energy cost for both
the standard reference design and the proposed
design;
3. Name of individual completing the compliance
report; and
4. Name and version of the compliance software tool
506.4.2 Additional documentation. The code official shall
be permitted to require the following documents:
1. Documentation of the building component character-
istics of the standard reference design;
2. Thermal zoning diagrams consisting of floor plans
showing the thermal zoning scheme for tandard ref-
erence design and proposed design.
3. Input and output report(s) from the energy analysis
simulation program containing the complete input
and output files, as applicable. The output file shall
include energy use totals and energy use by energy
source and end -use served, total hours that space con-
ditioning loads are not met and any errors or warning
messages generated by the simulation tool as applica-
ble;
4. An explanation of any error or warning messages
appearing in the simulation tool output; and .
5. A certification signed by the builder providing the
building component characteristics of the proposed
design as given in Table 506.5.1(1).
506.5 Calculation procedure. Except as specified by this sec-
tion, the standard reference design and proposed design shall
be configured and analyzed using identical methods and tech-
niques.
506.5.1 Building specifications. The standard reference
design and proposed design shall be configured and ana-
lyzed as specified by Table 506.5.1(1). Table 506.5.1(1)
shall include by reference all notes contained in Table
502.2(1).
506.5.2 Thermal blocks. The standard reference design
and proposed design shall be analyzed using identical ther-
mal blocks as required in Section 506.5.2.1, 506.5.2.2 or
506.5.2.3.
506.5.2.1 HVAC zones designed. Where HVAC zones
are defined on HVAC design drawings, each HVAC zone
shall be modeled as a separate thermal block.
Exception: Different HVAC zones shall be allowed
to be combined to create a single thermal block or
identical thermal blocks to which multipliers are
applied provided:
1. The space use classification is the same
throughout the thermal block.
2. All HVAC zones in the thermal block that are
adjacent to glazed exterior walls face the same
orientation or their orientations are within 45
degrees (0.79 rad) of each other.
3. All of the zones are served by the same HVAC
system or by the same kind of HVAC system.
506.5.2.2 HVAC zones not designed. Where HVAC
zones have not yet been designed, thermal blocks shall
be defined based on similar internal load densities, occu-
pancy, lighting, thermal and temperature schedules, and
in combination with the following guidelines:
1. Separate thermal blocks shall be assumed for inte-
rior and perimeter spaces. Interior spaces shall be
those located more than 15 feet (4572 mm) from an
exterior wall. Perimeter spaces shall be those
located closer than 15 feet (4572 nun) from an
exterior wall.
2. Separate thermal blocks shall be assumed for
spaces adjacent to glazed exterior walls: a separate
zone shall be provided for each orientation, except
orientations that differ by no more than 45 degrees
(0.79 rad) shall be permitted to be considered to be
the same orientation. Each zone shall include floor
area that is 15 feet (4572 nun) or less from a glazed
perimeter wall, except that floor area within 15 feet
(4572 mm) of glazed perimeter walls having more
than one orientation shall be divided proportion-
ately between zones.
3. Separate thermal blocks shall be assumed for
spaces having floors that are in contact with the
84 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
ground or exposed to ambient conditions from
zones that do not share these features.
4. Separate thermal blocks shall be assumed for
spaces having exterior ceiling or roof assemblies
from zones that do not share these features.
506.5.2.3 Multifamily residential buildings. Residen-
tial spaces shall be modeled using one thermal block per
space except that those facing the same orientations are
permitted to be combined into one thermal block. Corner
units and units with roof or floor loads shall only be com-
bined with units sharing these features.
506.6 Calculation software tools. Calculation procedures
used to comply with this section shall be software tools capable
of calculating the annual energy consumption of all building
elements that differ between the standard reference design and
the proposed design and shall include the following capabili-
ties.
1. Computer generation of the standard reference design
using only the input for the proposed design. The calcu-
lation procedure shall not allow the user to directly mod-
ify the building component characteristics of the
standard reference design.
2. Building operation for a full calendar year (8760 hours).
3. Climate data for a full calendar year (8760 hours) and
shall reflect approved coincident hourly data for temper-
ature, solar radiation, humidity and wind speed for the
building location.
4. Ten or more thermal zones.
5. Thermal mass effects.
6. Hourly variations in occupancy, illumination, receptacle
loads, thermostat settings, mechanical ventilation,
HVAC equipment availability, service hot water usage
and any process loads.
7. Part -load performance curves for mechanical equip-
ment.
8. Capacity and efficiency correction curves for mechani-
cal heating and cooling equipment.
9. Printed code official inspection checklist listing each of
the proposed design component characteristics from
Table 506.5.1(1) determined by the analysis to provide
compliance, along with their respective performance rat-
ings (e.g., R-value, U-factor, SHGC, HSPF, AFUE,
SEER, EF, etc.).
506.6.1 Specific approval. Performance analysis tools
meeting the applicable subsections of Section 506 and
tested according to ASHRAE Standard 140 shall be permit-
ted to be approved. Tools are permitted to be approved
based on meeting a specified threshold for a jurisdiction.
The code official shall be permitted to approve tools for a
specified application or limited scope.
506.6.2 Input values. When calculations require input val-
ues not specified by Sections 502, 503, 504 and 505, those
input values shall be taken from an approved source.
2009 INTERNATIONAL ENERGY CONSERVATION CODE®. 63
i
COMMERCIAL ENERGY EFFICIENCY
TABLE 506.5.1(1)
FOR THE STANDARD REFERENCE AND PROPOSED DESIGNS
BUILDING COMPONENT
CHARACTERISTICS
STANDARD REFERENCE DESIGN
PROPOSED DESIGN
The space use classification shall be chosen in
accordance with Table 505.5.2 for all areas of the
Space use classification
Same as proposed
building covered by this permit. Where the space use
classification for a building is not known, the building
shall be categorized as an office building.
Type: Insulation entirely above deck
As proposed
Gross area: same as proposed
As proposed
Roofs
U-factor: from Table 502.1.2
As proposed
Solar absorptance: 0.75
As proposed
Emittance: 0.90
As proposed
Type: Mass wall if proposed wall is mass; otherwise
As proposed
steel -framed wall
Walls, above -grade
Gross area: same as proposed
As proposed
U-factor: from Table 502.1.2
- As proposed
Solar absorptance: 0.75
As proposed
Emittance: 0.90
As proposed
Type: Mass wall
As proposed
Walls, below -grade
Gross area: same as proposed
As proposed
U-Factor: from Table 502.1.2 with insulation layer on interior
As proposed
side of walls
Type: joist1framed floor
As proposed
Floors, above -grade
Gross area: same as proposed
As proposed
U-factor. from Table 502.1.2
As proposed
Floors, stab -on -grade
Type: Unheated
As proposed
F-factor: from Table 502.1.2
As proposed
Type: Swinging
As proposed
Doors
Area: Same as proposed
As proposed
U-factor. from Table 502.2(1)
As proposed
Area.
As proposed
(a) Theproposedglazingare s; where thepmposedglazing area
is less than 40 percent of above -grade wall area
(b) 40 percent of above -grade wall area; where the proposed
Glazing
glazing area is 40 percent or more of the above -grade wall
area.
U-factor: from Table 502.3
As proposed
SHGC: from Table 502.3 except that for climates with no
As proposed
requirement (NR) SHGC = 0.40 shall be used
External shading and PF: None
As proposed
Area:
As proposed
(a) The proposed skylight area; where the proposed skylight
area is less than 3 percent of gross area of roof assembly.
(b) 3 percent of gross area of roof assembly; where the pro -
Skylights
posed skylightarea is 3 percentormoreofgrossareaofroof
assembly.
U-factor: from Table 502.3
As proposed
SHOC: from Table 502.3 except that for climates with no
As proposed
requirement (NR) SHGC = 0.40 shall be used
The interior lighting power shall be determined in accordance
As proposed
with Table 505.5.2. Where the occupancy of the building is not
Lighting, interior
known, the lighting power density shall be 1.0 Watt per square
foot (10.73 W/mz) based on the categorization of buildings with
unknown space classification as offices.
The lighting power shall be determined in accordance with
As proposed
Lighting, exterior
Table 505.6.2(2). Areas and dimensions of tradable and
nontradable surfaces shall be the same as proposed
- -
(continued)
64 2009 INTERNATIONAL ENERGY CONSERVATION COD&
COMMERCIAL ENERGY EFFICIENCY
TABLE 506.5.1(1)--continued
SPECIFICATIONS FOR THE STANDARD REFERENCE AND PROPOSED DESIGNS
BUILDING COMPONENT
CHARACTERISTICS
STANDARD REFERENCE DESIGN
PROPOSED DESIGN
Receptacle, motor and process loads shall he modeled
and estimated based on the space use classification. All
end -use load components within and associated with the
Internal gains
Same as proposed
building shall be modeled to include, but not be limited
to, the following: exhaust fans, parking garage
ventilation fans, exterior building lighting, swimming
pool heaters and pumps, elevators, escalators,
refrigeration equipment and cooking equipment
Operating schedules shall include hourly profiles for
daily operation and shall account for variations between
weekdays, weekends, holidays and any seasonal
operation. Schedules shall model the time -dependent
Schedules
Same as proposed
variations in occupancy, illumination, receptacle loads,
thermostat settings, mechanical ventilation, HVAC
equipment availability, service hot water usage and any
process loads. The schedules shall be typical of the
proposed building type as determined by the designer
and approved by the jurisdiction
Mechanical ventilation
Same as proposed
As proposed, in accordance with Section 503.2.5.
-
Fuel type: same as proposed design
As proposed
Equipment type°: from Tables 506.5.1(2) and 506.5.1(3)
As proposed .
Efficiency: from Tables 503.2.3(4) and 503.2.3(5)
As proposed
Heating systems
Capacityb: sized proportionally to the capacities in the proposed
As proposed
design based on sizing runs, and shall be established such that
no smaller number of unmet heating load hours and no larger
heating capacity safety factors are provided than in the
proposed design.
Fuel type: same as proposed design
As proposed
Equipment type: from Tables 506.5.1(2) and 506.5.1(3)
As proposed
Efficiency: from Tables 503.2.3(1), 503.2.3(2) and 503.2.3(3)
As proposed
Capacityb: sized proportionally to the capacities in the proposed
As proposed
Cooling systems
design based on sizing runs, and shall be established such that
no smaller number of unmet cooling load hours and no larger
cooling capacity safety factors are provided than in the
proposed design.
Economizer: same as proposed, in accordance with Section
As proposed
503.4.1.
Fuel type: same as proposed
As proposed
Efficiency: from Table 504.2
As proposed
Service water heating
Capacity: same as proposed
As proposed
Where no service water hot water system exists or is specified in
the proposed design, no service hot water heating shall be
modeled.
a. Where no heating system exists or has been specified, the heating system shall be modeled as fossil fuel. The system characteristics shall be identical in both the
standard reference design and proposed design.
b. Theratio between thecapacities used in the annual simulationsand the capacities determinedby sizingruns shall be thesameforboth thestandard reference design
and proposed design.
c. Where no cooling system exists or no cooling system has been specified, the cooling system shall be modeled as an air-cooled single -zone system, one unit per
thermal zone. The system characteristics shall be identical in both the standard reference design and proposed design.
d. If an economizer is required in accordance with Table 503.3.1(1), and if no economizerexists or is specified in the proposed design, then a supply aireconomizer
shall be provided in accordance with Section 503.4.1.
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 65
COMMERCIAL ENERGY EFFICIENCY
TABLE 506.5.1(2)
HVAC SYSTEMS MAP
CONDENSER COOLING
SOURCE'
HEATING SYSTEM
CLASSIFICATION^
STANDARD REFERENCE DESIGN HVC SYSTEM TYPE`
Single -zone
Residential System
Single -zone
Nonresidential System
All Other
Water/ground
Electric resistance
System 5
System 5
System l
Heat pump
System 6
System 6
System 6
Fossil fuel
System 7
System 7
System 2
Air/none
Electric resistance
System 8
System 9
System 3
Heat pump
System 8
System 9
System 3
Fossil fuel
System 10
System 11
System 4
a. Select"wazedground"if the proposed design system condenseris waterorevapomtively cooled;select"air/none"if the condenseris aircooled.Closed-circuitdry
coolers shall be considered air cooled. Systems utilizing district cooling shall be treated as if the condenser water type were "water." If no mechanical cooling is
specified or the mechanical cooling system in the proposed design does not require beat rejection, the system shall be treated as if the condenser water type were
"Air." For proposed designs with ground -source or groundwater -source heat pumps, the standard reference design HVAC system shall be water -source heat pump
(System 6).
b. Select the path that corresponds to the proposed design heat source: electric resistance, beat pump (including air source and water source), or fuel feed. Systems
utilizing district heating (steam or hot water) and systems with no heating capability shall be treated as if the heating system type were "fossil fuel:' For systems
with mixed fuel heating sources, the system or systems that use the secondary heating source type (the one with the smallest total installed output capacity for the
spaces served by the system) shall be modeled identically in the standard reference design and the primary heating source type shall be used to determine standard
reference design HVAC system type.
c. Select the standard reference design HVAC systemcategory: The system under "single -zone residential system" shall be selected if the HVAC system in the pro-
posed design is a single -zone systemand serves a residential space. The system under"single-zone nonresidential system" shallbe selected if the HVAC system in
the proposed design is a single -zone system and serves other than residential spaces. The system under "all othee' shall be selected for all other cases.
66 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
COMMERCIAL ENERGY EFFICIENCY
TABLE 506.5.1(3)
SPECIFICATIONS FOR THE STANDARD REFERENCE DESIGN HVAC SYSTEM DESCRIPTIONS
SYSTEM NO.
SYSTEM TYPE
FAN CONTROL
COOLING TYPE
HEATING TYPE
I
Variable air volume with parallel fan -powered boxesa
VAVd
Chilled water`
Electric resistance
2
Variable air volume with reheatb
VAVd
Chilled water`
Hot water fossil fuel boiler'
3
Packaged variable air volume with parallel fan -powered
boxes
VAVd
Direct expansion`
Electric resistance
4
Packaged variable air volume with reheatb
VAVd
Direct expansion`
Hot water fossil fuel boiler'
5
Two -pipe fan coil
Constant volume'
Chilled water`
Electric resistance
6
Water -source heat pump
Constant volume'
Direct expansion`
Electric heat pump and boilers
7
Four -pipe fan coil
Constant volume'
Chilled water`
Hot water fossil fuel boiler'
8
Packaged terminal heat pump
Constant volume'
Direct expansion`
Electric heat pump,
9
Packaged rooftop heat pump
Constant volume'
Direct expansion`
Electric heat pumph
10
Packaged terminal air conditioner
Constant volume'
Direct expansion
Hot water fossil fuel boileJ
11
Packaged rooftop air conditioner
Constant volume'
Direct expansion
Fossil fuel furnace
For Sl: I foot = 304.8 mm, I cfmffF= 0.0004719, 1 Btu1h = 0.293/W, °C = [(OF)-32/1.8].
a. VAV with parallel boxes: Fans in parallel VAV fan -powered boxes shall be sized for50 percent of the peak design flow rate and shall be modeled with 0.35 W/cfm
fan power. Minimum volume setpoints for fan -powered boxes shall be equal to the minimum rate for the space required for ventilation consistent with Section
503.4.5, Exception 5. Supply air temperature setpoint shall be constant at the design condition.
b. VAV with reheat: Minimum volume setpoints for VAV reheat boxes shall be 0.4cfm/ft'offloor area. Supply air temperature shall be resetbased on zone demand
fromthe design temperatumdifference to a 10017temperaturedifference underminimum loadconditions. Design airflow rates shall besized for the resetsupply air
temperature, i.e., a l0°F temperature difference.
c. Direct expansion: The fuel type for the cooling system shall match that of the cooling system in the proposed design.
d. VAV: Constant volume can be modeled if the system qualifies for Exception 1, Section 503.4.5. Whenthe proposed design system has a supply, return or relieffan
motor 25 horsepower (hp) or larger, the corresponding fan in the VAV system of the standard reference design shall be modeled assuming a variable speed drive.
For smaller fans, a forward -curved centrifugal fan with inlet vanes shall be modeled. If the proposed design's system has a direct digital control system at the zone
level, static pressure setpoint reset based on zone requirements in accordance with Section 503A.2 shall be modeled.
e. Chilled water: For systems using purchased chilled water, the chillers we not explicitly modeled and chilled water costs shall be based as determined in Sections
506.3 and 506.3.2. Otherwise, the standard reference design's chiller plant shall be modeled with chillers having the number as indicated in Table 506.5.1(4) as a
function of standard reference building chiller plant load and type as indicated in Table 506.5.1(5) as a function of individual chiller load. Where chiller fuel source
is mixed, the system in the standard reference design shall have chillers with the same fuel types and with capacities having the same proportional capacity as the
proposed design's chillers for each fuel type. Chilled water supply temperature shall be modeled at 44'Fdesign supply temperature and 56OF return temperature.
Piping losses shall not be modeled in either building model. Chilled water supply water temperature shall be reset in accordance with Section 503.4.3.4. Pump sys-
tem power for each pumping system shall be the same as the proposed design; if the proposed design has no chilled water pumps, the standard reference design
pump power shall be 22 W/gpm(equal to a pump operating against 75-foot head, 65-percent combined impeller and motor efficiency). The chilled water system
shall be modeled as primary -only variable flow with flow maintained at the design rate through each chiller wing bypass. Chilled water pumps shall be modeled
as riding the pump curve or with variable -speed drives when required in Section 503.4.3.4. The heat rejection device shall be an axial fan cooling tower with
two -speed fans if required in Section 503A.4. Condenser water design supplymnaperature shall be 85°For l0"Fapproach to design wet -bulb temperature, which-
everis lower, with a designtemperamreriseof 10°EThetower shall becontrolled to maintain a70oFieavingwatertempemtumwhereweatherpermits, floatingup
to leaving water temperatureat designconditions. Pump system power for each pumping system shall be the same as the proposed design; if the proposed design
has no condenserwaterpumps, the standard referencedesign pump power shall be 19 W/gpm (equal to a pump operating against a 60-foot head, 60-pereentcom-
bind impeller and mororefficiency). Eachchillershall be modeled with separatecondenserwaterand chilled water pumps interlocked to operate with the associ-
ated chiller.
f. Fossil fuel boiler: Forsystems using purchased hot water or steam, the boilers am notexplicitly modeled and hot water or steamcosts shall be based on actual util-
ity rates. Otherwise, the boiler plant shall use the same fuel as the proposed design and shall be natural draft. The standard reference design bailer plant shall be
modeled with a single boiler if the standard reference design plant load is 600,000 Btu/h and less and with two equally sized boilers for plant capacities exceeding
600,000BftYh. Boilers shall be staged as required by the load. Hot water supply temperature shall be modeled at 180°Fdesign supply temperature and 130°Freturn
temperature. Piping losses shall not be modeled in either building model. Hot water supply water temperature shall be reset in accordance with Section 503.4.3.4.
Pump system power for each pumping system shall be the same as the proposed design; if the proposed design has no hot water pumps, the standard reference
design pump power shall be 19 W/gpm (equal to a pump operating against a60-foothead, 60-percentcombined impellerand motorefficiency). Thehot water sys-
tem shall be modeled as primary only with continuous variable flow. Hot water pumps shall be modeled as riding the pump curve or with variable speed drives
when required by Section 503.4.3A.
g. Electric heat pump and boiler: Water -source heat pumps shall be connected to a common heat pump water loop controlled to maintain temperatures between
60OF and 90°F. Heat rejection from the loop shall be provided by an axial fan closed-circuit evaporative fluid cooler with two -speed fans if required in Section
503.4.2. Heat addition to the loop shall be provided by boiler that uses the same fuel as the proposed design and shall be natural draft. If no boilers exist in the pro-
posed design, the standard reference building boilers shall be fossil fuel. The standard reference design boiler plant shall be modeled with a single boiler ifthe stan-
dard reference design plant load is 600,000 Btu/hor less and with two equally sized boilers for plant capacities exceeding 600,000 Btu/h. Boilers shall be staged as
required by the load. Piping losses shall not be modeled in either building model. Pump system power shall be the same as the proposed design; if the proposed
design has no pumps, the standard reference design pump power shall be 22 W/gpm, which is equal to a pump operating against a 75-foot head, with a 65-percent
combined impeller and motor efficiency. Loop flow shall be variable with flow shutoff at each heat pump when its compressor cycles off as required by Section
503.4.3.3. Loop pumps shall be modeled as riding the pump cure or with variable speed drives when required by Section 503.4.3.4.
h. Electric heat pump: Electric air -source heat pumps shall be modeled withelectric auxiliary heat, The system shall becontrolled with amultistage space thermo-
stat and an outdoor air thermostat wired to energize auxiliary heat only on the last thermostat stage and when outdoor airtemperature is less than 40°F.
i. Constant volume: Fans shall be controlled in the same manner as in the proposed design; i.e., fan operation whenever the space is occupied or fan opeiation cycled
on calls for heating and cooling. If the fan is modeled as cycling and the fan energy is included in the energy efficiency rating of the equipment, fan energy shall not
be modeled explicitly.
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 67
COMMERCIAL ENERGY EFFICIENCY
TABLE 506.5.1(4)
NUMBER OF CHILLERS
TOTAL CHILLER PLANT CAPACITY
NUMBER OF CHILLERS
<_ 300 tons
I
> 300 tons, < 600 tons
2, sized equally
>_ 600 tons
2 minimum, with chillers added so that no chiller is larger than 800 tons, all sized equally
For SI: 1 ton = 3517 w.
TABLE 506.5.1(5)
WATER CHILLER TYPES
INDIVIDUAL CHILLER PLANT CAPACITY
ELECTRIC CHILLER TYPE
FOSSIL FUEL CHILLER TYPE
5 100 tons
Reciprocating
Single -effect absorption, direct fired
> 100 tons, < 300 tons
Screw
Double -effect absorption, direct fired
>_ 300 tons
Centrifugal
Double -effect absorption, direct fired
For SI: 1 ton = 3517 w.
68 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
CHAPTER10
REFERENCED STANDARDS
* Revise Chapter 10 REFERENCED STANDARDS to include the following:
AFC
Arkansas Fire Prevention Code
State Fire Marshal's Office
#1 State Police Plaza Dr
Little Rock, AR 72209
(501)618-8624
Fax (501) 618-8621
Standard
Referenced
Reference
in Code
Number
Title
Section Number
AFC...........................................................................................................
104.3
AMC
Arkansas Mechanical Code
Department of Health
Division of Protective Health Codes
4815 West Markham Street, Slot 24
Little Rock, AR 72205-3867
(501)661-2642
Fax (501) 661-2671
httl)://www healthv arkansas.goy/progmmsSe"ices/mvironmentalHealth/ProtectiveHealthCodes/Pages/default.asRx
Standard Referenced
Reference in Code
Number Tide Section Number
AMC The following references apply to the residential section
of the 2003 IECC: 503.3.3.4, 503.3.3.4.1 and 503.3.3.4.2.
The following references apply to the commercial section
of the 2003 IECC and will be in effect until 12/31/2012.
803.2.5, 803.2.6, 803.2.8.1, 803.2.8.1.1, 803.2.8.1.2, 803.3.4
803.3.8.1.
The following references apply to the commercial section
of the 2009 IECC and will be in effect on and after 1 /1 /2013:
503.2.5, 503.2.5.1, 503.2.6, 503.2.7, 503.2.7.1,
503.2.7.1.1, 503.2.7.1.2, 503.2.9.1, 503.3.1 and 503.4.5.
Arkansas Energy Code for New Building Construction Supplements and Amendments 18
CHAPTER 6
REFERENCED STANDARDS
This chapter lists the standards that are referenced in various sections of this document. The standards are listed herein by the
promulgating agency of the standard, the standard identification, the effective date and title, and the section or sections of this
document that reference the standard. The application of the referenced standards shall be as specified in Section 107.
American Architectural Manufacturers Association
1827 Walden Office Square
chaumb
AAMA Suite
IL 60173-4268 --
Standard
reference
Referenced
in code
AAMA/WDMA/CSA
101/I.S.2/A c440-05 Specifications for Windows, Doors and Unit Skylights.............................................402.4.4, 502.4.1
Air Conditioning, Heating, and Refrigeration institute
4100 North Fairfax Drive
Suite AHRI Arlington, VA 22203
Standard Referenced
reference in code
210/24"3
Unitary Air -Conditioning and Air -Source Heat Pump Equipment ......................
Table 503.2.3(1), Table 503.2.3(2)
3101380-93
Standard for Packaged Terminal Air -conditioners and Heat Pumps ...................................
Table 503.2.3(3)
340/360-2000
Commercial and Industrial Unitary Air-conditioning and Heat Pump Equipment .........
Table 503.2.3(1), Table 503.2.3(2)
365-02
Commercial and Industrial Unitary Air-conditioning Condensing Units ....... .........................Table
503.2.3(6)
440-05
Room Fan-coil..................................................................................
503.2.8
550/590-98
Water Chilling Packages Using the Vapor Compression Cycle —with Addenda .........................
Table 503.2.3(7)
560--M
Absorption Water Chilling and Water Heating Packages ...........................................Table
503.2.3(7)
.840-1998
Unit Ventilators .................................................................................
503.2.8
13256-1 (2004)
Water -source Heat Pumps —Testing and Rating for Performance —Part 1: Water -to -air and
Brine -to -air Heat Pumps..................................................................Table
503.2.3(2)
1160-2004
Performance Rating of Heat Pump Pool Heaters .....................................................Table
504.2
Air Movement and Control Association International
30 West University Drive
AMCA
Arlington Heights, IL 60G04-1806
Standard
Referenced
reference
in code
number
Title
section number
50OD--07
Laboratory Methods for Testing Dampers for Rating.....................................................502.4.5
American National Standards Institute
25 West 43rd Street
Floor
ANSI
New York, NY 10036
New
Standard Referenced
reference in code
Z21.10.3-01
Gas Water Heaters, Volume III - Storage Water Heaters with Input Ratings Above 75,000 Btu per Hour,
Circulating Tank and Instantaneous —with Addenda Z21.10.3a-2003 and Z21.10.3b-2004..................
Table 504.2
Z21.13-04
Gas-faed Low Pressure Steam and Hot Water Boilers .............................................Table
503.2.3(5)
Z21.47- 03
Gas -fired Central Furnaces..................................................................Table
503.2.3(4)
Z83.8-02
Gas Unit Heaters and Gas -Fired Duct Furnaces —with Addendum Z83.8a-2003 ........................Table
503.2.3(4)
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 69
REFERENCED STANDARDS
i .
American Society of Heating, Refrigerating and Air -Conditioning Engineers, Inc.
ASHRAE
Atlanta, GA 30329-2305
Standard
-
Referenced
reference
in code
number
Title
section number
119-88 (RA 2004)
Air Leakage Performance for Detached Single-family Residential Buildings ...........................
Table 405.5.2(1)
140-2007
Standard Method of lest for the Evaluation of Building Energy Analysis Computer Programs ....................506.6.1
146-1998
Testing and Rating Pool Heaters..................................................................Table
504.2
ANSIIASHRAE/ACCA
Standard 183-2007
Peak Cooling and Heating Load Calculations in Buildings Except Low-rise Residential Buildings .................
503.2.1
13256-1 (2005)
Water -source Heat Pumps —Testing and Rating for Performance —Part 1: Water -to -air and
Brime to -air Heat Pumps (ANSUASHRAE/IESNA 90.1-2004) ....................................Table
503.2.3(2)
90.1-2007
Energy Standard for Buildings Except Low-rise Residential Buildings
(ANSI/ASHRAE/IESNA 90.1-2007)........................................501.1, 501.2,
502.1.1, Table 502.2(2)
ASHRAE-2001, 2005
ASHRAE Handbook of Fundamentals..................................................
402.IA, Table 405.5.2(I)
ASHRAE-2004
ASHRAE HVAC Systems and Equipment Handbook-2004................................................503.2.1
American Society of Mechanical Engineers
ASME
New Yo kkAvenue
NY 10016-5990
Standard
Referenced
reference
in code
number
Title
section number
PTC4.1- 1964
Steam Generating Units.....................................................................Table
503.2.3(5)
(Reaffirmed 1991)
/
ASTM International
l
ASTM
Cosohove
Wet Conshohocken,A 19428-2859
Standard
Referenced
reference
in code
number
Title
section number
C 90-06b
Specification for Load -bearing Concrete Masonry Units.............................................Table
502.2(1)
E 283--04
Test Method for Determining the Rate of Air Leakage Through Exterior Windows,
Curtain Walls and Doors Under Specified Pressure Differences Across the Specimen ...........
402.4.5, 502.4.2, 502.4.8
/io
Canadian Standards Association
5060 Spectrum Way
Mississauga, Ontario, Canada LAW 5N6
Standard Referenced
reference _- -- in code
101R.S.2/A440-18 Specifications for Windows, Doors and Unit Skylights.............................................402.4.4, 502.4.1
U.S. Department of Energy
c/o Superintendent of Documents - -
DOE U.S. Government Printing Office
Washington, DC 20402-9325
Standard Referenced
reference - _ _ _ - in code.
10 CFR Part 430, Subpart B,
Appendix E (1998)
10 CFR Part 430, Subpart B,
Appendix N (1998)
Uniform Test Method for Measuring the Energy Consumption of Water Heaters ............................ Table 504.2
Uniform Test Method for Measuring the Energy Consumption of Furnaces and Boilers .... Table 503.2.3(4), Table 503.2.3(5)
70 - 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
REFERENCED STANDARDS
DOE —continued
10 CFR Part 431,
Subpart E 2004 Test Procedures and Efficiency Standards for Commercial Packaged Boilers ........................... Table 503.2.3(6)
DOE(EIA- 0376
(Current Edition) State Energy Prices and Expenditure Report .........................................................W5.3, 506.2
International Code Council, Inc.
500 New Jersey Avenue, NW
ICC 6h Fluor
Washington, DC 20001
Standard
Referenced
reference
-
in code
number
Title
section number
IBC-09
International Building Codeo.............................................................201.3,
303.2, 402.2.9
IFC--09
International Fire Code®..............................................................................201.3
IFGC--09
International Fuel Gas Code ....................
:.................................................... 201.3
IMC--09
International Mechanical Code...........................................503.2.5,
503.2.6, 503.2.7.1, 503.2.7. 1.1,
503.2.7.1.2,503.2.9.1, 503.3.1, 503.4.5
IPC__W
International Plumbing Code®.........................................................................201.3
IRC—O9
International Residential Code'......................................201.3,
403.2.2, 403.6, 405.6.1, Table 405.5.2(l)
Illuminating Engineering Society of North America
IESNANew York, NY 100054001
Standard Referenced
reference - in code
90.1-2007 Energy Standard for Buildings Except Low-rise Residential Buildings ............... 501.1, 501.2, 502.1.1, Table 502.2(2)
National Fenestration Rating Council, Inc.
C 6305 Ivy Lane, Suite 140
Greenbelt, MD 20770
Standard
Referenced
reference
in cede
number
Title
section number
100-04
Procedure for Determining Fenestration Product U-factors--Second Edition .........................
.........303.1.3
200--04
Procedure for Determining Fenestration Product Solar Heat Gain Coefficients and
Ymsible Transmittance at Normal Incidence --Second Edition............................................303.1.3
400-04
Procedure for Determining Fenestration Product Air Leakag"econd Edition. ........ ...............
402.4.2,502.4.1
Sheet Metal and Air Conditioning Contractors National Association, Inc.
SMACNA
Chanti`�VA2Center °e
20
Standard
Referenced
reference
in code
number
Title
section number
SMACNA-85
HVAC Air Duct leakage Test Manual..............................................................503.2.7.1.3
Underwriters Laboratories Inc.
333 P6ngsten Road
U7
j/
Northbrook, IL 60062-2096
Standard
Referenced
reference
in code
number
Title
section number
727--06
Oil -fired Central Furnaces...................................................................Table
503.2.3(4)
731-95
Oil -fired Unit Heaters —With Revisions through February 2006 .....................................Table
503.2.3(4)
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 71
REFERENCED STANDARDS
United States - Federal Trade Commission
US
600 Pennsylvania Avenue NW
-FTC
Washington, DC 20580
Standard
Referenced
reference
in code
number
Title
section number
CFR Title 16
R-value Rule......................................................................................303.1.4
Window and Door Manufacturers Association
WDMA
1400 East Touhy Avenue, Suite 470
Des Plaines, IL 60018
Standard
Referenced
reference
r
in code
number
Title
section number
AAMA/WDMA/CSA
1011I.S.21A440-08
Specifications for Windows, Doors and Unit Skylights.............................................402.4.4,
502.4.1
72 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
INDEX
A
ACCESS HATCHES .....................402.2.3
ADDITIONS AND ALTERATIONS
Defined................................202
Requirements ........................101.4.3
ADMINISTRATION .....................
Chapter 1
AIR ECONOMIZERS
Defined................................202
Requirements ........503.3.1,
503.4.1, 503.4.5.3
AIR INFILTRATION
Defined................................202
Requirements ..........
402.4.1, 402.4.2, 502.4.6
AIR LEAKAGE .... 402.4.2, 402.4.4, Table 405.5.2(1),
502.4, 503.2.7.1.3
AIR SEALING..........................402.4.2
Testing option ... .....................402.4.2.1
Visual inspection ....................402.4.2.2
AIR SYSTEM BALANCING
.............. 503.2.9.1
ALTERNATE MATERIALS ....................102
APPROVED
Defined................................202
AUTOMATIC
Defined................................202
BALANCING .................503.2.9.1,
503.2.9.2
BALLASTS ........................505.1,
505.3
BASEMENT WALLS
Defined................................202
Requirements ............303.2.1,
Table 462.1.1,
Table 402.1.3, 402.2.6,
Table 405.5.2(1), Table 502.1.2,
Table 502.2(1), 502.2.2.2, 502.2.4
BELOW -GRADE WALLS (see BASEMENT WALLS)
BI-LEVEL SWITCHING
................. 505.2.2.1
BOILERS ...............
Table 503.2.3(5), 503.4.3,
503.4.3.5, 504.2, Table 504.2
BUILDING ENVELOPE
Airtightness.........................402.4.2
Compliance documentation ......... 103.2, 401.3
Defined................................202
Exemption...........................101.5.2
Requirements ................
102.1.1, 402, 502
Performance method
...... Table 405.5.2(1), 506.3
C
CAULKING AND WEATHERSTRIPPING .... 402.4.1,
502.4.1, 502.4.3
CERTIFICATE............................401.3
CHANGE OF OCCUPANCY ............... 101.4.4
CIRCULATING PUMPS ............ 503.4.3.3, 504.6
CIRCULATING SYSTEMS ......... 403.4, 503.4.3.3,
503.4.3.5, 504.6, 504.7.2
CLIMATE ZONES..... 301, Figure 301.1, Table 301.1
By state or territory ..... Figure 301.1, Table 301.1
International climate zones .. 301.3, Table 301.3(1),
Table 301.3(2)
Warm humid ......... 301.2, Table 301.2, 301.3.1
COEFFICIENT OF PERFORMANCE
(COP) .......... Table 503.2.3(2), Table 503.2.3(7)
COMMERCIAL BUILDINGS......,. Compliance101.2,
101.4.6, 101.5,
Chapter 5, 501.1
Defined................................202
Total building performance ................. 506
COMMISSIONING OF HVAC SYSTEMS ..... 503.2.9
Manuals...........................503.2.9.3
COMPLIANCE AND ENFORCEMENT ........ 101.5
CONDITIONED FLOOR AREA
Defined................................202
CONDITIONED SPACE
Defined................................202
CONSTRUCTION DOCUMENTS ..............103
CONTROLS
Capabilities....... 503.2.2, 503.2.4.1, 503.2.4.3.1,
503.2.4.3.2, 503.2.5, 503.4.3.4,
503.4.3.5, 503.4.4, 504.3
Economizers .................. 503.3.1, 503.4.1
Energy recovery systems ................ 503.2.6
Fan speed...........................503.4.4
Heat pump ........ 403.1.1, 503.2.4.1.1, 503.4.3.3
Heating and cooling .............. 403.1, 503.2.2,
503.2.4, 503.4.5
Hot water system ....................... 504.6
Humidity ............. 503.2.4.1, 503.2.6, 503.4.5
Hydronic systems ..... 503.2.9.2, 503.3.2, 503.4.3
Lighting ................ 505.2, 505.6.1, 505.6.2
Off hour...........................503.2.4.3
Service water heating ........ 403.4, 504.3, 504.6
Shutoff dampers ........ 403.5, 503.2.4.4, 503.4.5
Temperature ...............503.2.4.1, 503.2.4.2,
503.2.4.3.1, 503.4.3, 504.3
Variable air volume systems...... 503.4.2, 503.4.5
Ventilation...........................503.2.5
COOLING SYSTEMS
Hot gas bypass limitation ............... 503.4.7
COOLING WITH OUTDOOR AIR .... 503.3.1, 503.4.1
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 73
INDEX
CRAWL SPACE WALLS
Defined................................202
Requirements ............ 303.2.1, Table 402.1.1,
Table 402.1.3, 402.2.8, Table 405.5.2(1)
DAYLIGHT ZONE CONTROL ............. 505.2.2.3
DEADBAND .........
503.2.4.2, 503.4.3.2, 403.4.3.3
DEFINITIONS .........................
Chapter 2
DEGREE DAY COOLING ............ Table 301.3(2)
DEGREE DAY HEATING ............ Table 301.3(2)
DEMAND CONTROL VENTILATION (DCV).. 503.2.5.1
DESIGN CONDITIONS
............. Chapter 3, 302
DUAL DUCT VAV..............
503.4.5.2, 503.4.5.3
DUCTS
Defined................................202
Insulation ..........
103.2, 401.3, 403.2, 503.2.7,
503.2.7.1.2, 503.2.7.1.3
Sealing .......................103.2,
503.2.7,
503.2.7.1.2, 503.2.7.1.3
DWELLING UNIT
Defined................................202
E
Air .......................... 503.3.1,503.4.1
Defined................................202
Requirements ........503.3.1, 603.4.1, 503.4.5.3,
Water...............................503.4.1
ELECTRICAL METERS ....................505.7
ELECTRICAL POWER AND LIGHTING..... 404,505
ENERGY ANALYSIS, ANNUAL
Defined................................202
Documentation ...................405.4, 506.4
Requirements ......................405.3, 506
ENERGY EFFICIENCY RATIO (EER) ....... 503.2.3,
503.3.1, 503.4.1
ENERGY RECOVERY VENTILATION SYSTEMS
Defined................................202
Requirements ................. Table 405.5.2(1),
503.2.1, 503.2.6
ENERGY SIMULATION TOOL
Defined................................202
Requirementstuse ............ 101.5.1, 405, 506,
506.2.1, 506.5.3, 506.5.4
ENVELOPE, BUILDING THERMAL
Defined................................202
ENVELOPE DESIGN
PROCEDURES .......................402, 502
EQUIPMENT EFICIENCIES .... 103.2, 401.3, 503.2.3,
503.3.1, 503.4.1, 504.2
EQUIPMENT PERFORMANCE
REQUIREMENTS ......................
503.2.3
Boilers ......................
Table
503.2.3(5)
Condensing units ..............
Table
503.2.3(6)
Economizer exception...........
Table
503.3.1(2)
Packaged terminal air conditioners
and heat pump ...............
Table
503.2.3(3)
Unitary air conditioners and
condensing units ...........
Table
503.2.3(1)
Unitary and applied heat pumps...
Table
503.2.3(2)
Warm air duct furnaces and
unit heaters .................
Table
503.2.3(4)
Warm air furnaces .............
Table
503.2.3(4)
Warm air furnaces/air-conditioning
units .......................
Table
503.2.3(4)
Water chilling packages, standard
. Table
503.2.3(7)
Water heating ..........................504.2
EXEMPT BUILDINGS ....................
101.5.2
EXISTING BUILDINGS ...................101.4.1
EXTERIOR LIGHTING .....................505.6
EXTERIOR SHADING.......... Table 502.3,
502.3.2
EXTERIOR WALLS
Defined................................202
Thermal performance .............402,
402.1.1,
Table 405.5.2(1),502, 502.2.2
F
FAN FLOOR HORSEPOWER ...........503.2.10.1
FENESTRATION ...........
303.1.3, 402.3, 402.4.2;
502.3; 502.4
Defined................................202
Rating and labeling ............
303.1.3, 402.1.1,
402.6, 502.1.1
FIREPLACES...........................402.4.3
FURNACE EFFICIENCY ..........
Table 405.5.2(1),
Table 503.2.3(4)
G
GUESTROOMS (see SLEEPING UNIT)
GLAZING AREA
Requirements ... 402.3.3, 402.3.5, Table 404.5.2(1)
I:
HEAT PUMP .......... 403.1.1, Tables 503.2.3(2, 3),
503.2.4.1.1, 503.4.3.3
HEAT TRAPS ....................... 504.4, 504.5
Defined................................202
HEATING AND COOLING LOADS.... 302.1, 403.1.2,
503.2.1, 503.2.2, 503.2.3, 503.2.4.1.1,
503.2.4.3, 503.3.1, 503.4.2
HEATING OUTSIDE A BUILDING ......... 503.2.11
HISTORIC BUILDINGS ...................101.4.2
74 20091NTERNATIONAL ENERGY CONSERVATION CODE®
INDEX
HOT BYPASS...........................503.4.7
HOT WATER.............................504.2
Annual energy performance ..............405.1
Piping insulation ........... 403.4, 503.2.8, 504.5
System controls ........... 503.4.6, 504.3, 504.6
HUMIDISTAT
Defined................................202
Requirements ........ 503.2.4.1, 503.2.6, 503.4.5
HYDRONIC HEAT PUMP SYSTEMS....... 503.4.3.3
HYDRONIC SYSTEM BALANCING........ 503.2.9.2
I
IDENTIFICATION (MATERIALS, EQUIPMENT
AND SYSTEM) .........................303.1
INDIRECTLY CONDITIONED
SPACE (see CONDITIONED SPACE)
INFILTRATION, AIR LEAKAGE ............. 402.4,
Table 405.5.2(1), 502.4
Defined................................202
INSPECTIONS.............................104
INSULATION
Identification ........................... 303.1
Installation ...... 303.1.1, 303.1.1.1, 303.1.2, 303.2
Product.rating ........................303.1.4
Requirements .......402.1.1, 402.2, 502.1, 502.2
INSULATING SHEATHING
Defined................................202
Requirements............ Table 402.1.1, 402.1.2,
Table 502.2(1), 502.2.3
INTEGRATED PART LOAD VALUE
(IPLV) ............. Tables 503.2.3 (1, 2, 6 and 7),
503.4.1, 506.3.1
INTERIOR LIGHTING POWER ....... 505.5, 505.5.2
L
Ae1=f4111=1k
Defined................................202
Requirements .... 303.1.3, 303.3, 402.4.2, 402.4.3,
502.4.1, 502.4.7,
503.2.7, 505.5.1.2
LIGHTING POWER
Design procedures ....................505.5.2
Exterior connected ...............
505.6, 506.2.8
Interior connected .... 505.5, Table 505.5.2, 506.4.7
Manufacturer's information....
102.2, 102.3, 505.1.3
LIGHTING SYSTEMS ...................404,
505
Controls, additional ....................
505.2.2
Controls, exterior ......................
505.2.4
Controls, interior ......................
505.2.1
Guestrooms/sleeping units .............
505.2.3
Line voltage ........................
505.5.1.4
Merchandise, (highlight specific)..... Table 505.5.2
Plug-in busway ......................505.5.1.4
Recessed...........................502.4.8
Track.............................505.5.1.4
LISTED
Defined......................:.........202
LOADING DOCK WEATHERSEALS ........ 502.4.6
LOW ENERGY BUILDINGS ...............
101.5.2
LOW -VOLTAGE LIGHTING
Defined................................202
Requirements .......................
505.5.1.2
LUMINAIRE
Controls ....................505.2.2.1,
505.2.3
Sealed .......................402.4.3,
502.4.7
Tandem wiring ..........................505.3
Wattage ......................505.5.1,
505.6.1
T'
MAINTENANCE INFORMATION ............. 102.3
MANUALS ...............101.5.1, 102.3, 503.2.9.3
MASS
Wail .... 402.1.3, 402.2.3, Table 405.5.2(1), 502.2.3
Floor...............................502.2.5
MATERIALS AND EQUIPMENT ............... 303
MECHANICAL SYSTEMS AND
EQUIPMENT ...................403, 405.1, 503
MECHANICAL VENTILATION .............. 403.5,
Table 405.5.2(1), 503.1, 503.2.5
METERS, ELECTRICAL ....................505:7
MOTOR NAMEPLATE HORSEPOWER.... 503.2.10.2
MULTIPLE DWELLING UNITS...............403.7
MULTIPLE ZONE SYSTEMS...............503.4.5
T
NONCIRCULATING SYSTEMS......... 504.4, 504.5
NONDEPLETABLE/RENEWABLE ENERGY
SOURCES
Requirements ......................:.506.2.4
F
OCCUPANCY
Requirements .... 101.4.4, 101.4.5, 101.5, 503.2.9,
503.4.5, 504.3, 506.2.5, 506.4.7
OCCUPANCY SENSORS ....... 503.2.4.3.2, 505.2.2
OFF -HOUR, CONTROLS ................ 503.2.4.3
OPAQUE AREAS ...................402.3.4, 502,
Table 502.2(1), 502.2.7
ORIENTATION ... Table 404.5.2(1), 503.2.4.1, 506.4.4
OVERHANG, PROJECTION FACTOR ....... 502.3.2
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 75
INDEX
�i
PACKAGED TERMINAL AIR CONDITIONER (PTAC)
Requirements ........... Table 503.2.3(3), 503.3
PACKAGED TERMINAL HEAT PUMP
Requirements ........... Table 503.2.3(3), 503.3
PARALLEL PATH CALCULATION .......... 402.2.5
PERFORMANCE ANALYSIS ............. 405,506
PHOTOCELL...........................505.2.4
PIPE INSULATION ...... 403.3, 403.4, 503.2.8, 504.5
PLANS AND SPECIFICATIONS ...............103
POOL COVERS ..................403.9.3, 504.7.3
POOLS............................403.9,504.7
PROJECTION FACTOR ................... 502.3.2
PROPOSED DESIGN
Defined................................202
Requirements .......................405, 506
PUMPING SYSTEMS...... 403.4, 503.2.9.2, 503.4.3,
504.6, 504.7.2
a
�: AVd 19 q
Defined................................202
Computation.........................402.1.2
RECOOLING...........................503.4.5
REFERENCED STANDARDS ........
107, Chapter 6
REHEATING .....................503.4.5,
503.4.6
RENEWABLEINONDEPLETABLE
ENERGY SOURCES ...................506.2.4
REPAIR
Requirements.........................101.4.3
Defined .......... :...................
..202
RESET CONTROL .....................503.4.3.4
RESIDENTIAL BUILDINGS
Compliance ......................101.21
101.5
Defined................................202
Requirements ......................
Chapter 4
Simulated performance alternative ........... 405
ROOF ASSEMBLY
Defined................................202
Requirements ........ 101.4.3, 303.1.1.1, 402.2.2,
Table 405.52(1),
502.2.1, 502.5
SCOPE.................................101.2
SCREW LAMP HOLDERS
Defined................................202
Requirements .......................
505.5.1.1
SEASONAL ENERGY EFFICIENCY
RATIO (SEER) .................405.6.1,
503.2.3
SERVICE WATER HEATING
Defined................................202
Requirements .............. 401.3, 403.4, 405.1, j
501.2, 503.4.6, 504
SETBACK THERMOSTAT .............. 503.2.4.3.1
SHADING .............................. 502.3.2
Projection factor ...................... 502.3.2
SHEATHING, INSULATING
(see INSULATING SHEATHING)
SHGC
(see SOLAR HEAT GAIN COEFFICIENT)
SHUTOFF DAMPERS ...... 403.5, 502.4.4, 503.2.4.4
SIMULATED PERFORMANCE
ALTERNATIVE .......................405,506
SIMULATION TOOL
(see ENERGY SIMULATION TOOL)
SINGLE ZONE ....................405.6.1, 503.3
SIZING
Equipment and system .... 403.6, 405.6.1, 503.2.2
SKYLIGHTS ............ ..102.1.3, 402.3, 402.3.5,
402.4.1, 402.4.2, 402.6,
Table 405.5.2(1), 502.1.1, 502.3.2
Defined................................202
Maximum exempt area ................. 502.3.1
SLAB -EDGE INSULATION .......... 303.2.1, 401.3,
Table 402.1.1, 402.2.7, 502.2.6
SLEEPING UNIT ....... 505.2.2.1, 505.2.2.2. 505.2.3 .
SNOW MELT SYSTEM CONTROLS.. 403.8, 503.2.4.5
SOLAR HEAT GAIN COEFFICIENT
(SHGC)....... 102.1.3, 104.2, 401.3, Table 402.1.1,
402.1.4, 402.3.2, 402.3.3, 402.3.6,
402.6, 405.6.1, Table 502.3, 5W.3.2
Defined................................202
STANDARD REFERENCE DESIGN
Defined................................202
Requirements .......................405, 506
STANDARDS, REFERENCED........ 107, Chapter 6
STEEL FRAMING........... 402.2.4, Table 502.2(2)
STOREFRONT ........... 202, Table 502.3, 502.4.2
SUNROOM....... 402.2.10, 402.3.5, Table 405.5.2(1)
Defined................................202
SUPPLY AIR TEMPERATURE
RESET CONTROLS .................. 503.4.5.4
SUSPENDED CEILINGS ..................502.2.1
SWIMMING POOLS ...............•........ 504.7
11
TANDEM WIRING .........................505.3
TERMITE INFESTATION ..................402.2.7
THERMAL ISOLATION .......... 402.2.10, 402.3.5,
Table 405.5.2(1)
Defined................................202
THERMAL MASS (see MASS)
THERMAL RESISTANCE (see R-VALUE)
76 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
INDEX
THERMAL TRANSMITTANCE
(see U-FACTOR)
TOTAL BUILDING PERFORMANCE
Commercial ............................. 506
Residential.............................405
TOWNHOUSE (see RESIDENTIAL BUILDINGS)
U
U-FACTOR
Defined.................................202
Alternative .............402.1.3, 402.1.4, 502.1.2
1T1
VAPOR RETARDER .....................402.2.9
VARIABLE AIR VOLUME
SYSTEMS (VAV) .. 503.2.6,
503.2.9.2, 503.4.2, 503.4.5
VENTILATION........
402.5, 403.5, Table 405.5.2(1),
503.2.5
Defined................................202
VESTIBULES ............................
502.4.7
n
WALL
Above grade, defined ..................... 202
Basement, defined .......................202
Crawlspace, defined ...................... 202
Exterior, defined .........................202
WALLS (see EXTERIOR WALLS AND ENVELOPE,
BUILDING THERMAL)
WALLS ADJACENT TO UNCONDITIONED
SPACE (see BUILDING THERMAL ENVELOPE)
WATER ECONOMIZER ................... 503.4.1
Defined................................202
WATER HEATING .....................401.3, 504
WINDOW AREA
(see FENESTRATION and GLAZING AREA)
WINDOW PROJECTION FACTOR
Requirements ........................ 502.3.2
WIRING, TANDEM ........................505.3
FA
ZONE (see also CLIMATE ZONES)
Defined................................202
Requirements ........... 405.6.1, 503.2.4, 503.3,
503.4.3.4, 503.4.5
ZONE ISOLATION ....................... 503.4.5
2009 INTERNA71ONAL ENERGY CONSERVATION CODE® 77
78 2009 INTERNATIONAL ENERGY CONSERVATION CODE®
EDITORIAL CHANGES - SECOND PRINTING
Page 28, Table 402.1.3: Note d has been deleted.
Page 39, Table 502.2(1): column 3, row 8, now reads ... R-5.7ci'
Page 39, Table 502.2(1): column 4, row 8, now reads ... R-5.7ci'
Page 39, Table 502.2(1): column 8, row 8, now reads ... R-9.5ci
Page 39, Table 502.2(1): column 8, row 10, now reads ... R-13 + R-7.5
Page 39, Table 502.2(1): column 11, row 11, now reads ... R-13 +R-3.8
Page 39, Table 502.2(1): column 12, row 11, now reads ... R-13 + R-7.5
Page 39, Table 502.2(1): column 12, row 13, now reads ... R-7.5c
Page 41, Table 502.3: column 2, row 7, now reads ... 1.20
Page 73, IESNA: Standard reference number now reads 90.1-2007
EDITORIAL CHANGES - THIRD PRINTING
Page 25, Table 301.3(1): row 2 Warm -humid Definition is moved below row 4 Moist (A) Definition.
Page 25, Table 301.3(1): row 2 now reads ... Marine (C) Definition -Locations meeting all four criteria:
1. Mean temperature of coldest month between -3'C (27'F) and 18'C (65'F)
2. Warmest month mean < 22-C (72'F)
3. At least four months with mean temperatures over 10'C (50'F)
4. Dry season in summer. The month with the heaviest precipitation in the cold season has at least three times as much precipitation
as the month with the least precipitation in the rest of the year. The cold season is October through March in the Northern Hemi-
sphere and April through September in the Southern Hemisphere.
Page 28, Table 402.1.3: Note c now reads ... c. Basement wall U-factor of 0.360 in warm -humid locations as defined by Figure
301.1 and Table 301.1.
Page 28, Section 402.2.5: exception line 2 now reads ... insulation requirements in Table 402.2.5 shall be permit -
Page 30, Section 402.4.2.1: line 5 now reads ... of 50 pascals (1 psf). Testing shall occur after rough in
Page 30, Section 402.5: line 4 now reads ... 405 shall be 0.48 in Zones 4 and 5 and 0.40 in Zones 6 through
Page 32, Section 403.9.1: line 4 now reads ... heaters fired by natural gas or LPG shall not have continu-
Page 35, Table 405.5.2(1)--continued: column 1, line 9 now reads ... Service water heatingh, `
Page 42, Deletion arrow added below Section 502.4.8
Page 62, Section 506.5.2: line 3 now reads ... mal blocks as required in Section 506.5.2.1, 506.5.2.2 or
Page 64, Table 506.5.1(1): column 2, row 12, line 2 now reads ... Table 505.6.2(2). Areas and dimensions of tradable and
Page 76, Index P: line 5 now reads ... Parallel Path Calculation 402.2.5
Page 77, Index V: line 2 is deleted.
EDITORIAL CHANGES - FOURTH PRINTING
Page 32, Section 404.1: line 1 now reads ... 404.1 Lighting equipment. A minimum of 50 percent of the
Page 35, TABLE 405.5.2(I -continued: column 2, row 2 now reads... Specific leakage area (SLA)` = 0.00036 assuming no en-
ergy recovery
Page 35, TABLE 405.5.2(1)-continued: column 3, row 2, line 7 now reads ... rate` but not less than 0.35 ACH
Page 35, TABLE 405.5.2(1)-continued: column 3, row 5, line 4 now reads ... element' but not integral to the
Page 35, TABLE 405.5.2(1)-continued: column 1, row 7, now reads ... Heating systems"
Page 35, TABLE 405.5.2(1)--- continued: column 1, row 8, now reads .. Cooling systems"''
Page 35, TABLE 405.5.2(I)-continued: column 1, row 9, line 2 now reads ... heatingn, k
Page 38, TABLE. 502.1.2: column 2, row 8 now reads ... U-0.58
Page 38, TABLE 502.1.2: column 10, row 8 now reads ... U-0.090
Page 38, TABLE 502.1.2: column 11, row 8 now reads ... U-0.080
2009 INTERNATIONAL ENERGY CONSERVATION CODE® 79
Page 38; TABLE 502.1.2: column 8, row 19 now reads ... F-0.860
Page 39, TABLE 502.2(1): column 11, row 11 now reads ... R-3.8ci
Page 39, TABLE 502.2(1): column 12, row 11 now reads ... R-7.5ci
Page 39,.TABLE 502.2(1): column 13, row 11 now reads ... R-7.5ci
Page 41,Section 502.4.4 Hot gas bypass limitations: is renumbered, relocated and now reads ... 503.4.7 Hot gas bypass limitations
Page 55, Section 503.4.7 Hot gas bypass limitations is added
Page 75, Index M, MOISTURE CONTROL is deleted.
EDITORIAL CHANGES - FIFTH PRINTING
Page v, Chapter 4 Residential Energy Efficiency, line 3 now reads ... is unique for this code. In this code, a residential building is an
R-2, R-3 or R-4 building three stories or less in height. All other R-1
Page 35, TABLE 405.5.2(1)—continued: column 1, row 9 now reads now reads ... Service water heating"''
Page 37, Section 502.2.5: line 10 now reads ... area if the material weight is not more than 120 pounds per
Page 55, Section 503.4.7: line 6 now reads ... 503.4.7.
Page 75, Index: new entry added now reads ... HOT BYPASS...... 503.4.7
EDITORIAL CHANGES - SIXTH PRINTING
Page 35, TABLE 405.5.2(1)--continued: column 1, row 9 now reads... Service HZO heating" k'
EDITORIAL CHANGES - SEVENTH PRINTING
Page 27, TABLE 402.1.1: footnote j now reads ... For impact rated fenestration complying with Section R301.2.1.2 of the Interna-
tional Residential Code or Section 1609.1.2 of the International Building Code, the maximum U-factor shall be 0.75 in Zone 2 and
0.65 in Zone 3.
Page 39, TABLE 502.2(1): column 8, row 10, line 2 now reads ... R-7.5ci
Page 42, Section 503.2.3: lines 4 and 5 now reads ... 503.2.3(4), 503.2.3(5), 503.2.3(6), 503.2.3(7) and 503.2.3(8) when tested and
rated in accordance with the
Page 47, TABLE 503.2.3(5): row 1, column 4 now reads ... MINIMUM EFFICIENCY" d, <
Page 49, TABLE 503.2.3(8) is added and reads as shown.
Page 51, Section 503.2.7.1.3: Equation 5-2 now reads ... CL = F I P '
Page 51, TABLE 503.2.8: footnote b equation now reads ...T = r[(1+t/r)m-lj
Page 55, Section 503.4.5: line 3 now reads ... 503.4.5.4 shall apply to complex mechanical systems serv-
9u 2009 INTERNATIONAL ENERGY CONSERVATION CODE
CHAPTER 5
RESIDENTIAL BUILDING DESIGN BY COMPONENT PERFORMANCE APPROACH
* Revise Exception 2 in Section 502.1.1 MOISTURE CONTROL as follows:
2. Vapor retarders shall not be required where the county in which the building is being constructed is
considered a hot and humid climate area and identified as such in Figure 302.1(1).
* Delete Section 502.1.5 FENESTRATION SOLAR HEAT GAIN COEFFICIENT without
substitution.
*'Revise Table 503.3.3.3 MINIMUM DUCT INSULATION as follows:
TABLE 503.3.3.3
MINIMUM DUCT INSULATION a
InsulationR-value
Ducts in unconditioned
ANNUAL HEATING
Ducts in
basements, crawl spaces,
DEGREE DAYS
unconditioned attics
garages, and other
or outside building
unconditioned spaces `
Supply
Return
Supply
Return
<1,500
8
4
4
0
1,500 to 3,500
5.6
5.6
5.6
5.6
3,501 to 7,500
5.6
5.6
5.6
5.6
> 7,500
11
6
1 11
2
* Delete footnote b in Table 503.3.3.3 without substitution.
SECTION 503
BUILDING MECHANICAL SYSTEMS AND EQUIPMENT
* Replace the International Mechanical Code with the Arkansas Mechanical Code in Sections
503.3.3.4 DUCT CONSTRUCTION, 503.3.3.4.1 HIGH -AND MEDIUM -PRESSURE DUCT
SYSTEMS and 503.3.3.4.2 LOW-PRESSURE DUCT SYSTEMS.
Arkansas Energy Code for New Building Construction Supplements and Amendments 15
CHAPTER 6
SIMPLIFIED PRESCRIPTIVE REQUIREMENTS FOR DETACHED
ONE- AND TWO-FAMILY DWELLINGS AND GROUP R-2, R-4
OR TOWNHOUSE RESIDENTIAL BUILDINGS
* Revise Section 601.2 COMPLIANCE to include deemed to comply tools that are approved by
the Arkansas Energy Office.
601.2 Compliance. Compliance shall be demonstrated in accordance with Section 601.2.1 or 601.2.2. Deemed to
comply tools that are approved by the Arkansas Energy Office shall be permitted to demonstrate compliance.
* Revise Section 601.3.2.1 DEFAULT FENESTRATION PERFORMANCE as follows:
601.3.2.1 Default fenestration performance. Where a manufacturer has not determined a fenestration product's U-
factor in accordance with NFRC 100, compliance shall be determined by assigning such products a default U-factor
from Tables 102.5.2(1) and 102.5.2(2).
* Modify Exception in Section 602.1.6 SLAB -ON -GRADE FLOORS as follows:
Exception: Slab perimeter insulation is not required for unheated slabs in areas of moderate to very heavy termite
infestation probability as shown in Figure 502.2(7). Where this exception is used, building envelope compliance
shall be demonstrated by using Section 502.2.2 or Chapter 4 with the actual "Slab perimeter R-value and depth" in
Table 602.1, or by using Section 502.2.4.
* Delete Section 602.2 MAXIMUM SOLAR HEAT GAIN COEFFICIENT FOR
FENESTRATION PRODUCTS without substitution.
CHAPTER 7
BUILDING DESIGN FOR ALL COMMERCIAL BUILDINGS
* Chapter 7 will be in effect until 12/31/2012. Revise ASHRAE/IESNA 90.1 to
ANSUASHRAE/IESNA 90.1-2001 in the following section:
701.1 Scope. Until 12/31/2012 commercial buildings shall meet the requirements of ANSI/ASHRAE/IESNA 90.1-
2001. On and after 1/1/2013 commercial buildings shall meet the requirements of ANSI/ASHRAE/IESNA 90.1-
2007 with the following exception.
Exception: Commercial buildings that comply with Chapter 5 in the 2009 IECC with its associated definitions,
general requirements and reference standards.
Chapter 8 of the 2003 IECC is in effect until 12/31/2012. On and after 1/1/2013 Chapter 8 is
removed in its entirety and replaced with Chapter 5 of the 2009 International Energy
Conservation Code (2009 IECC) with its associated definitions, general requirements and
referenced standards.
Arkansas Energy Code for New Building Construction Supplements and Amendments 16
NORTHWEST ARKANSAS DEMOCRATGAZETfE
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