Arkansas Administrative Code
Agency 168 - Arkansas Economic Development Commission
Rule 168.00.11-003 - Arkansas Energy Code for New Building Construction
Current through Register Vol. 49, No. 9, September, 2024
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 © 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 90.1-2001 Energy Standard for 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 / 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:
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: EnergyInfo@ArkansasEDC.com
Download code information and compliance tools at: www.ArkansasEnergy.org. Click on the Residential tab on top, then Builders and Energy Code on the left side.
OVERVIEW
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 ANSI/ASHRAE/IESNA 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 component1 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 tradeoff
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. ANSI/ASHRAE/IESNA Standard 90.1 2001 is adopted by reference and will be in effect until 12/31/2012. On and after 1/1/2013 ANSI/ASHRAE/IESNA Standard 90.1 2007 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.
1 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.
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) ANSI/ASHRAE/IESNA 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 1/1/2013 Chapter 8 of the 2003 IECC is deleted and replaced with Chapter 5 of the 2009 IECC.
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:
CHAPTER 1
ADMINISTRATION
Delete entire CHAPTER 1 ADMINISTRATION. Replace with the Arkansas Energy Code for New Building Construction Supplements and Amendments, CHAPTER 1, ADMINISTRATION AND ENFORCEMENT as follows.
CHAPTER 1
ADMINISTRATION and ENFORCEMENT
GENERAL
MATERIALS, SYSTEMS AND EQUIPMENT
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.
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.
TABLE 102.5.2(1)
U-FACTOR DEFAULT TABLE FOR WINDOWS, GLAZED DOOR AND SKYLIGHTS
FRAME MATERIAL AND PRODUCT TYPEa |
SINGLE GLAZED |
DOUBLE 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 . 2 7 |
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 U-factor of 0.60.
TABLE 102.5.2(2)
U-FACTOR DEFAULT TABLE FOR NONGLAZED DOORS
DOOR TYPE |
WITH FOAM CORE |
WITHOUT FOAM CORE |
Steel doors (1.75 inches thick) |
0.35 |
0.60 |
WITH STORM DOOR |
WITHOUT STORM 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: 1 inch = 25.4 mm.
TABLE 102.5.2(3)
SHGC DEFAULT TABLE FOR FENESTRATION
PRODUCT DESCRIPTION |
SINGLE GLAZED |
DOUBLE GLAZED |
||||||
Clear |
Bronze |
Green |
Gray |
Clear + Clear |
Bronze + Clear |
Green + Clear |
Gray + Clear |
|
Metal frames Fixed Operable |
0.78 0.75 |
0.67 0.64 |
0.65 0.62 |
0.64 0.61 |
0.68 0.66 |
0.57 0.55 |
0.55 0.53 |
0.54 0.52 |
Nonmetal frames Fixed Operable |
0.75 0.63 |
0.64 0.54 |
0.62 0.53 |
0.61 0.52 |
0.66 0.55 |
0.54 0.46 |
0.53 0.45 |
0.52 0.44 |
ALTERNATE MATERIALS-METHOD OF CONSTRUCTION,
DESIGN OR INSULATING SYSTEMS
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.
CONSTRUCTION DOCUMENTS
Exceptions:
CONTRACTOR / BUILDER COMPLIANCE
INSPECTIONS
ENFORCEMENT
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.
APPEALS
VALIDITY
RESPONSIBILITY
REFERENCED STANDARDS
EFFECTIVE DATE
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 consistent 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 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 60ºF) and cooling (base 60ºF) shall be selected from NOAA "Annual Degree
Days to Selected Bases Derived from the 1961-1990 Normals," the ASHRAE Handbook of Fundamentals, 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.
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) |
9B |
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) |
6B |
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) |
6B |
Grant (H) |
9B |
Searcy |
8 |
Greene |
8 |
Sebastian |
7B |
Hempstead (H) |
7B |
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) |
9B |
Washington |
8 |
Johnson |
7B |
White (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.
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.
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 INSULATIONa
ANNUAL HEATING DEGREE DAYS |
Insulation R-valued |
|||
Ducts in unconditioned attics or outside building |
Ducts in unconditioned basements, crawl spaces, garages, and other unconditioned spacesc |
|||
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 |
11 |
2 |
* Delete footnote b in Table 503.3.3.3 without substitution.
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.
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.
* Revise Section 601.3.2.1 DEFAULT FENESTRATION PERFORMANCE as follows:
* 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 ANSI/ASHRAE/IESNA 90.1-2001 in the following section:
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.
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.
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.
CHAPTER 10
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 Reference Number |
Title |
Referenced in Code 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 |
||
Standard Reference Number |
Title |
Referenced in Code 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. |