Publications

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Document type: Technical Articles
Publication Date: March 2011
Focus: Compliance
The 2006 International Energy Conservation Code (IECC) envelope requirements are not coupled to the home''s glazing area percentage. A home with modest glazing area, say 13% of floor area, will likely require a more efficient envelope for 2006 IECC compliance. Conversely, a home with larger glazing area, say 20% of floor area, may achieve 2006 IECC compliance with less insulation.The 2006 IECC also implemented a new climate zone system. The system introduced more homogeneity across climates, resulting in less variation in the envelope requirements from location to location. Therefore, some locations have slightly different (higher or lower) efficiency requirements under the 2006 IECC than under the previous codes.
Document type: Determination, Other
Publication Date: September 2014
Focus: Regulatory
This document, concerning residential building codes is an action issued by the Department of Energy. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.
Document type: Analysis, Technical Support Document
Publication Date: August 2014
Focus: Code Development
This report documents the technical analysis used to evaluate whether residential buildings constructed to meet the requirements of the 2015 IECC would result in energy efficiency improvements over residential buildings constructed to meet the requirements of the previous edition, the 2012 IECC.
Document type: Analysis
Publication Date: August 2014
Focus: Regulatory
This report documents the technical analysis used to evaluate whether residential buildings constructed to meet the requirements of the 2015 IECC would result in energy efficiency improvements over residential buildings constructed to meet the requirements of the previous edition, the 2012 IECC. PNNL considered all code change proposals approved for inclusion in the 2015 IECC during the ICC code development cycle2, and evaluated their combined impact on a suite of prototypical residential building energy models across all U.S. climate zones.
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
AreaCalc is a tool to simplify the process of calculating the building areas needed to demonstrate energy code compliance. A spreadsheet-like interface is used to calculate window, door, skylight, roof, wall, and floor areas. These areas can then be transferred directly into REScheck™ where the code compliance results for those assemblies can be displayed.
Document type: Other
Publication Date: September 2012
Focus: Adoption
This toolkit was developed by the U.S. Department of Energy’s (DOE) Building Energy Codes Program (BECP) for use by states, municipalities, energy code advocates, policymakers, stakeholders, and all other groups with a vested interest in energy code adoption. This toolkit provides information and resources to help guide adopting authorities through the adoption process and setting minimum requirements for new construction.This toolkit provides some insight into how the adoption process may influence the residential and commercial build communities.
Document type: Other
Publication Date: September 2012
Focus: Compliance
The compliance toolkit describes the steps that should be taken by the build community to make sure that their buildings meet the requirements of the energy codes in effect where the buildings are being built and that the building designs are well documented so that the enforcement community can quickly and easily determine if the building meets the requirement of the energy code. This toolkit describes the steps that should be taken by the build community to make sure that their buildings meet the requirements of the energy codes in effect where the buildings are being built and that the building designs are well documented so that the enforcement community can quickly and easily determine if the building meets the requirement of the energy code.
Document type: Other
Publication Date: September 2012
Focus: Adoption, Code Development, Compliance, Enforcement
Buildings account for almost 40% of the energy used in the United States and, as a direct result of that use, our environment and economy are impacted. Building energy codes and standards provide an effective response. The Building Energy Codes Program designed the Adoption, Compliance, and Enforcement (ACE) Learning Series for those in the building industry having the greatest potential to influence the adoption of and compliance with building energy codes and standards. Each toolkit in the ACE Learning Series delivers essential information to enable designers, specifiers, builders, building owners, policy makers, code officials, and others involved in building design and construction to understand the important role building energy codes play in helping us all address our energy, economic, and environmental challenges.
Document type: Other
Publication Date: September 2013
Focus: Compliance
This document, concerning Activities and Methodology for Assessing Compliance with Building Energy Codes, is an action issued by the Department of Energy. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.[6450-01-P]DEPARTMENT OF ENERGYOffice of Energy Efficiency and Renewable Energy[Docket No. EERE-2013-BT-BC-0036]Activities and Methodology for Assessing Compliance with Building Energy CodesAGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy.ACTION: Notice of reopening of public comment period.
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
Eliminating unnecessary wood framing within walls can increase the thermal efficiency of the wall system. Less framing allows more insulation to be installed and also eliminates hot and cold spots (from thermal bridging through the frame) within the wall system.
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
Many homes are being constructed with unfinished basements to reduce initial costs. In most cases, the homeowner eventually finishes the basement for additional living space by installing basement wall insulation. Because most basements are eventually occupied, the advantages and disadvantages of conditioning the basement should be thoroughly reviewed prior to permitting and construction.
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
Traditional crawlspace designs include passive foundation-wall vents that are supposed to let moisture and contaminants escape outside. Yet field research shows that wall vents may make moisture problems worse.
Document type: State-specific
Publication Date: September 2012
Focus: Compliance, Enforcement
This Guide is designed to assist state and local code jurisdictions in achieving statewide compliance with the 2009 International Energy Conservation Code (IECC) for residential buildings and ANSI/ASHRAE/IESNA Standard 90.1-2007 for commercial buildings.
Document type: State-specific
Publication Date: May 2013
Focus: Adoption
In response to the U.S. Department of Energy's July 20, 2011 notice of determination in the Federal Register regarding the 2009 International Energy Conservation Code, Alabama certifies that it has reviewed and adopted the provisions of its Alabama Energy and Residential Code to include the requirement for residential buildings to comply with the 2009 International Residential Code, including the Energy Chapter with amendments.
Document type: State-specific
Publication Date: March 2011
Focus: Adoption
This document is a list of Alaska-specific amendments to the 2009 International Energy Conservation Code, adopted by the Alaska Housing Finance Corporation (AHFC) on March 9, 2011. It is meant to be read in conjunction with the 2009 IECC and ASHRAE Standard 62.2-2010 which may be purchased at local bookstores or online. These amendments comprise both the residential and commercial Building Energy Efficiency Standards (BEES) for AHFC-funded residential mortgage loans and energy rebates, and energy retrofits of public buildings. These amendments supplant the BEES amendments to the 2006 IECC for residential projects as adopted on June 17, 2009, and include the amendments previously made to the 2009 IECC known as the “Commercial BEES.”
Document type: Reports and Studies
Publication Date: December 2012
Focus: Adoption
The purpose of this study is to quantify the energy code adoption rate by local jurisdictions from a sample set of 21 states. Some of the states within this sample have statewide energy codes, while others do not. Using construction starts and weighting results by localities that have or have not adopted energy codes, the findings can suggest a means of identifying which states have “effectively” adopted state-wide codes through local adoption and enforcement.
Document type: Reports and Studies
Publication Date: May 2010
Focus: Adoption
The U.S. Department of Energy (DOE) has established ambitious goals to improve the energy efficiency requirements of the International Energy Conservation Code (IECC) for residential buildings. DOE has established near- and long-term goals of 30% and 50% energy efficiency improvements, respectively, compared to the 2006 IECC.This report presents DOE’s approach to calculating residential energy consumption for the purpose of estimating energy savings attributable to improvements in the code. This approach is then used to estimate the national average energy savings, relative to the 2006 IECC, resulting from the proposed improvements DOE submitted and supported for the 2012 IECC. DOE estimates a total reduction in energy use of 30.6% for the projected requirements of the 2012 IECC as compared to the 2006 IECC, assuming the use of the primary compliance option that involves standard-efficiency equipment. Were the high-equipment efficiency option used, the projected savings would...
Document type: Technical Articles
Publication Date: March 2011
Focus: Compliance
Calculating the areas of the building components (e.g., windows, doors, exterior walls) is easily the most time-consuming step in energy code compliance. This article contains some helpful hints for calculating area takeoffs.
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
There are many areas for air leakage, including exterior doors, windows, floors, and foundations. In addition, places such as electrical boxes and plumbing fixtures can be areas for air leakage. It is important to seal air leaks before insulating.
Document type: State-specific
Publication Date: August 2013
Focus: Adoption
The State of Arizona, based on the demonstrated adoption and enforcement of the International Energy Conservation Code adn ASHRAE 90.1-2007 at the local jurisdiction level, is on track to meet the intent of the compliance requirements of Title III of the Energy Conservation and Production Act of 1976, as amended concerning energy codes.
Document type: State-specific
Publication Date: June 2013
Focus: Adoption
In compliance with Title III of the Energy Conservation and Production Act (ECPA) of 1976, as amended, this is to certify that the State of Arkansas has adopted the Arkansas Energy Code for New Building Construction Supplements and Amendments for 2011, which references the 2003 version of the International Energy Conservation Code (IECC) for low-rise residential buildings, as well as ASHRAE 90.1-2007 for nonresidential buildings.
Document type: Resource Guide
Publication Date: September 2011
Focus: Compliance
The U.S. Department of Energy (DOE) recognizes the enormous potential that exists for improving the energy efficiency, safety and comfort of homes. The 2012 International Energy Conservation Code (IECC) sets the bar for energy efficiency, and air sealing requirements are one of the key provisions.This guide is a resource for understanding the air leakage requirements in the 2012 IECC and suggestions on how these measures can be met. It also provides information from Building America’s Air Sealing Guide, best Practices and case studies on homes that are currently meeting the provisions. The 2012 IECC and a few International Residential Code requirements are referenced throughout the guide.
Document type: Resource Guide
Publication Date: October 2010
Focus: Compliance
The guide includes practical plan review and inspection resources, including the U.S. Department of Energy Building Energy Codes Program's REScheck™ and COMcheck™ quick reference guides, case studies, and sample inspection checklists; as well as excerpts from International Code Council's commentaries, workbooks, and code companion materials.This collection also includes many other helpful items and points to further resources available on the web. Residential and commercial building officials can easily add state and local guidance in order to use this binder as a one-stop resource to support compliance in the field.
Document type: Other, Program Information, Reports and Studies
Publication Date: February 2010
Focus: Adoption, Code Development, Compliance
In order to provide a basic introduction to the varied and complex issues associated with building energy codes, the U.S. Department of Energy’s Building Energy Codes Program, with valued assistance from the International Codes Council and ASHRAE, has prepared Building Energy Codes 101: An Introduction. This guide is designed to speak to a broad audience with an interest in building energy efficiency, including state energy officials, architects, engineers, designers, and members of the public.
Document type: Reports and Studies
Publication Date: August 2007
Focus: Compliance, Enforcement
A study funded by the North American Insulation Manufacturers Association to identify "the best practices in energy code support, compliance, and enforcement, and...[to promote and replicate] those best practices in other municipalities across Arizona."
Document type: Reports and Studies
Publication Date: March 2014
Focus: Program
Commercial and residential buildings account for approximately 41% of all energy consumption and 72% of electricity usage in the United States. Building energy codes and standards set minimum requirements for energy-efficient design and construction for new and renovated buildings, assuring reductions in energy use and greenhouse gas emissions over the life of buildings. The U.S. Department of Energy (DOE), through the Building Energy Codes Program (BECP or the Program), supports the improvement of energy efficiency in buildings.BECP periodically assesses the impacts of its activities by estimating historical and projected energy savings, consumer savings, and avoided emissions. The Pacific Northwest National Laboratory (PNNL) conducted the codes benefits assessment in support of the BECP. Underlying the assessment is a series of calculations that estimate and compare energy savings under two scenarios: "with BECP" and "without BECP." The analysis covers the years 1992-2040 and...
Document type: Resource Guide
Publication Date: June 2011
Focus: Adoption, Code Development, Compliance
This guide provides key information to policy makers on energy codes and standards and offers guidance on how policy makers can support the creation of statewide energy efficiency goals and standards. In addition, this guide instructs policy makers on how they can:
  • Encourage the adoption of statewide codes.
  • Establish energy code awareness programs.
  • Support enforcement of and compliance with energy codes.
  • Participate in the development of model codes and standards.
  • Determine the viability of the new code.
Document type: Other
Publication Date: April 2006
Focus: Adoption, Compliance
This document is to be used to guide the efforts associated with conducting evaluations of California’s energy efficiency programs and program portfolios launched after December 31, 2005, and includes the Codes and Standards Program Evaluation Protocol, which is designed to guide evaluation approaches for codes and standards programs.
Document type: Other
Publication Date:
Focus: Adoption, Compliance
This document presents a consistent, systemized, cyclic approach for planning and conducting evaluations of California's energy efficiency and resource acquisition programs, and provides valuable information concerning when evaluations should be conducted, the types of evaluation that can be conducted, and a discussion of approaches for conducting those studies.
Document type: Technical Articles
Publication Date: March 2011
Focus: Compliance
Insulation should be installed to fill the entire cavity. REScheck™ uses nominal insulation R-values. The assemblies listed in REScheck already have a default value added for standard sheathing (depending on the assembly component).
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
Older calculation requirements limited REScheck™'s computations for log walls, but standardized calculations have allowed a REScheck to expand (starting with version 3.7.1). The calculations are much more detailed and specific to each wood species. The most noticeable change is an improvement in the calculation accuracy and usability of the software.
Document type: Code Notes
Publication Date:
Focus: Compliance
The 2009 International Residential Code and International Energy Conservation Code do not permit trade-offs for installing high-efficiency heating, ventilation, and air conditioning equipment—installing a 90%+ furnace as a trade-off for 2" x 4" stud walls with R-13 insulation. The more permanent building insulation and sealing features now take precedence. However, there still remain optional strategies allowing 2" x 4" exterior stud walls.
Document type: State-specific
Publication Date:
Focus: Adoption
In an effort to provide high levels of continuing energy code support to Colorado’s 329 code jurisdictions, the Governor’s Energy Office commissioned an independent survey to better understand the types of code assistance desired. The survey was conducted by the International Codes Council between October and December 2008. The collected responses from 174 of Colorado’s code jurisdictions are presented in this report.
Document type: Analysis, State-specific
Publication Date:
Focus: Adoption
The purpose of the Colorado Gap Analysis Report is twofold: 1) document and analyze the strengths and weaknesses of the state’s existing energy code adoption and implementation infrastructure and policies; and 2) recommend potential actions state agencies, local jurisdictions, and other stakeholders can take to achieve 100% compliance with the model energy codes.
Document type: State-specific
Publication Date: July 2013
Focus: Adoption
The State of Colorado provides the following information to certify compliance with Title III of the Energy Conservation andProduction Act (ECPA) of 1976, as amended. As the U.S. Department of Energy (DOE) recognizes, the State of Colorado, as a long-term "home-rule" state has no statewide jurisdiction for the adoption and compliance with the International Energy Conservation Code (IECC) and ASHRAE 90.1-2007 at the local jurisdiction level. However, the State of Colorado, based on the demonstrated adoption and enforcement of the 2009 IECC and ASHRAE 90.1-2007 at the local jurisdiction level, fully meets the intent of the compliance requirements of the ECPA concerning energy codes.In addition, the State of Colorado., within its jurisdictional authority, ahs adopted the 2012 IECC for low-rise residential buildings, as well as ASHRAE Standard 90.1-2010 for nonresidential buildings.
Document type: Reports and Studies
Publication Date: September 2011
Focus: Adoption, Compliance
Conformity assessment is a term used to describe the processes followed to demonstrate that a product, service, management system, or body meets specified requirements, such as standards, codes, laws, regulations, or other criteria. With respect to energy codes, conformity assessment includes all activities and tasks undertaken by any number of entities to ensure that the provisions of an adopted energy code are achieved at a designated point in time. This report identifies and discusses conformity assessment activities and provides guidance for developing new or adjusting existing ways of verifying compliance. In addition, this report looks at different ways to ensure that the energy efficiency goals of an adopted code or standard are achieved.
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
Adequate attic ventilation is a long-standing requirement in building codes. However, conditioned, unvented attics have the potential to reduce residential energy needs and are allowed by code under certain conditions. Such assemblies are sometimes called cathedralized attics because, as with cathedral ceilings, the insulation is in the rafters and/or roof deck.
Document type: State-specific
Publication Date: July 2013
Focus: Adoption
The purpose of this letter is to document that the State of Connecticut has met its stautory requirement with regard to adoption of energy codes that meet or exceed the 2009 International Energy Conservation Code for residential buildings and ASHRAE Standard 90.1-2007 for commercial buildings.
Document type: Code Notes
Publication Date: October 2011
Focus: Compliance
Converting a basement to conditioned space increases the living space of a house. As with most construction activities, the conversion or remodeling must be done in compliance with construction codes in force at the time the remodel permit is issued. Compliance shall be demonstrated by meeting the requirements of the 2009 International Energy Conservation Code.
Document type: Code Notes
Publication Date: December 2011
Focus: Compliance
Converting an existing unconditioned garage to conditioned space is a popular strategy for increasing the living space of a house. Typically, the conversion or remodeling must be done in compliance with construction codes in force at the time the remodel permit is issued. Compliance shall be demonstrated by meeting the requirements of the 2009 International Energy Conservation Code.
Document type: Reports and Studies
Publication Date: April 2009
Focus: Adoption, Code Development, Compliance
At the request of the U.S. Department of Energy, the Joint Global Change Research Institute has prepared a series of reports surveying building energy codes in seven of the Asia-Pacific Partnership on Clean Energy and Climate (APP) countries. These reports include country reports on building energy codes in each APP partner country and a comparative report based on the country reports.
Document type: State-specific
Publication Date: July 2013
Focus: Adoption
In compliance with Title III of the Energy Conservation and Production Act of 1976, as amended, this is to certify that the State of Delaware has adopted the International Energy Conservation Code (IECC) for low-rise residential buildings, along with the ASHRAE 90.1-2007 for commercial buildings adn all other residential buildings not covered under the IECC 2009.
Document type: Code Notes
Publication Date: June 2011
Focus: Compliance
Codes allow crawlspaces with mechanical ventilation instead of crawlspaces with passive vents to the outdoors. However, code officials and builders are often uncertain about the design details.
Document type: Determination, Technical Support Document
Publication Date: September 2009
Focus:
The Energy Conservation and Production Act of 1976, as amended, requires the U.S. Department of Energy (DOE) to determine whether revisions to the 2006 International Energy Conservation Code (IECC) would improve energy efficiency in residential buildings. An “affirmative determination” for any IECC revision triggers a requirement that each state certify to DOE, within 2 years of the publication of the determination, that it has reviewed the provisions of the new code and made a determination whether it is appropriate to update its building code(s) to meet or exceed the revised IECC.
Document type: Presentation
Publication Date: July 2009
Focus: Code Development
This July 2009 presentation details the U.S. Department of Energy Building Energy Codes Program's game plan and progress report regarding the development of energy efficiency standards for manufactured housing.
Document type: Brochures/Fliers, Program Information
Publication Date: July 2011
Focus: Adoption, Code Development, Compliance
As our country continues to focus on saving energy and reducing emissions in the face of global climate change, it is turning to the building sector for viable solutions. The effects of energy use in residential and commercial buildings are nationwide, worldwide and varied. In the U.S. alone, residential and commercial buildings account for 40% of all energy consumption and 70% of electricity usage.
Document type: Code Notes
Publication Date: June 2011
Focus: Compliance
Metal or plastic drywall clips can be used to replace a third stud at a corner, at a partition intersection backing stud, or in the ceiling to replace a nailer. The reduced attachment (wood to drywall) resulting from the use of dry wall clips allows small movements without drywall cracking and nail pops.
Document type: Code Notes
Publication Date: August 2009
Focus: Compliance
Many studies have shown that visual inspection of duct seals in residences is not enough. Code now requires a pressure test. Pressure testing ducts as required by the 2009 International Energy Conservation Code is far superior to visual inspection and will definitively confirm that duct leakage is kept to a low level.
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
Ducts and air handlers should be placed in conditioned spaces when possible. Ducts typically lose substantial amounts of energy from both conduction and leakage; keeping them in a conditioned space minimizes the impact of these losses. Ducts inside a conditioned space must be properly sealed, but are not required to be insulated.
Document type: Code Notes
Publication Date: July 2011
Focus: Compliance
The 2009 International Energy Conservation Code defines conditioned space as 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. Various studies have identified compelling reasons for locating all heating, ventilation, and air conditioning ducts and air handlers within this conditioned space.
Document type: Reports and Studies
Publication Date: July 2008
Focus: Compliance, Enforcement
This report was developed by Pennsylvania Housing Research Center (PHRC) in order to describe PHRC’s energy code technical assistance pilot program and to report the conclusions of the energy code enforcement and compliance study. The program focused on providing a technical assistance program and assessing “common energy enforcement and building practices” for several municipalities, COGs and third- party agencies that volunteered for the program.
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
The prescriptive envelope component criteria (Section 502.2.5) in the 2003 International Energy Conservation Code (IECC) is an alternative compliance path for sunrooms and additions to existing residential buildings and structures. Sections 402.2.10 and 402.3.5 in the 2006 IECC list requirements for sunrooms.
Document type: Comparison
Publication Date: May 2011
Focus: Green and Advanced Codes
Green building codes should save energy — use this comparison to evaluate how the energy efficiency requirement of basic compliance with these green building codes and beyond code programs compare to the 2009 International Energy Conservation Code and meet the sustainability goals of your community.
Document type: Analysis
Publication Date: April 2013
Focus: Code Development
The 2009 and 2012 International Energy Conservation Codes (IECC) require a substantial improvement in energy efficiency compared to the 2006 IECC. This report averages the energy use savings for a typical new residential dwelling unit based on the 2009 and 2012 IECC compared to the 2006 IECC. Results are reported by the eight climate zones in the IECC and for the national average.
Document type: Technical Articles
Publication Date: May 2009
Focus: Compliance
There are three approaches to make an addition comply with the energy code:
  • The addition as defined above meets all code requirements. This approach does not require that the original portion of the building meet code requirements.
  • If the building combined with the addition complies with the code, the addition will also comply, regardless of whether the addition complies alone. For example, a sunroom that does not comply with the code is added to a house. If the entire house (with the sunroom) complies, the addition also complies.
  • In the 2000 and 2003 International Energy Conservation Code, additions less than 500ft2 (46.5m2) of conditioned floor area may meet the prescriptive envelope requirements in the table. To use the table, the total area of windows, doors, and skylights cannot exceed 40% of the gross wall and roof area of the addition.
This document describes how to use REScheck™ to comply with approach #1.
Document type: State-specific
Publication Date: June 2009
Focus: Adoption
This study was commissioned by the Florida Department of Community Affair’s Codes & Standards Section to determine the impacts of Florida’s Energy Code over time and recommend possible changes that would increase residential efficiency. It examines each of the 15 residential energy code cycles that have occurred during the 30-year period from 1979 to 2009, and determines the relative change in energy code efficiency and its impact on energy use and energy cost throughout the period. The study has been revised to include Florida’s 2009 supplement to its 2007 energy code to determine how its requirements compare with the requirements of Section 405 of the 2009 International Energy Conservation Code. Florida’s energy code compliance software, EnergyGauge® USA, is used to conduct annual, hourly simulations and analysis of 180 different home configurations. These results are combined with Florida’s historical energy cost data and new home...
Document type: State-specific
Publication Date: July 2013
Focus: Adoption
The Florida Building Commission, which has statutory authority to administer the Florida Building Code (s. 553.72(3), Florida Statutes), hereby certifies that Chapter 4 of the 2010 Florida Building Code, Energy Conservation meets or exceeds the 2009 edition of the International Energy Conservation Code for low-rise residential buildings. 
Document type: Resource Guide
Publication Date: September 2011
Focus: Adoption, Code Development, Green and Advanced Codes
The Going Beyond Code Guide is designed to help state and local governments design and implement successful "beyond code" programs for new commercial and residential buildings. The goal is to help states and localities establish voluntary or mandatory programs that go well beyond traditional minimum code requirements for new buildings.
Document type: Brochures/Fliers, Program Information
Publication Date: June 2011
Focus: Adoption, Green and Advanced Codes
The U.S. Department of Energy's Building Energy Codes Program offers experience ranging from energy to wastewater and all sections of green building programs in between.
Document type: Comparison
Publication Date: May 2012
Focus: Adoption
The International Code Council (ICC) published the 2012 International Energy Conservation Code® (IECC) in early 2012. The 2012 IECC is based on revisions, additions, and deletions to the 2009 IECC that were considered during the ICC code development process conducted in 2011. Solid vertical lines, arrows, or asterisks printed in the 2012 IECC indicate where revisions, deletions, or relocations of text respectively were made to 2009 IECC. Although these marginal markings indicate where changes have been made to the code, they do not provide any further guidance, leaving the reader to consult and compare the 2009 and 2012 IECC for more detail.
Document type: Code Notes
Publication Date: June 2011
Focus: Compliance
Headers for windows and doors are typically supported by cripples or jack studs. These studs can be eliminated using header hangers, as allowed under the International Residential Code.
Document type: Reports and Studies
Publication Date: May 2014
Focus: Adoption, Code Development, Compliance, Residential
Pacific Northwest National Laboratory analyzed the relationship between the Residential Energy Services Network (RESNET) Home Energy Rating System (HERS) Index and the traditional simulation-based Performance Path used in the International Energy Conservation Code (IECC). The analysis evaluates, for a single-family residence with various characteristics, the ranges of HERS Index values that would imply compliance with the 2012 IECC Performance Path. Several building characteristics considered likely to result in quantifiable differences in the outcomes of the two approaches, or otherwise believed to be of interest to code developers and policy makers, are considered in the analysis.
Document type: Code Notes
Publication Date: August 2009
Focus: Compliance
Lighting consumes more than 10% of electric energy used in homes, presenting a substantial opportunity for lowering residential energy consumption. The International Code Council recently passed a code change that will appear in the 2009 International Energy Conservation Code and the International Residential Code requiring that half of the permanent lighting in a new home have high-efficacy lamps.
Document type: Resource Guide
Publication Date: September 2011
Focus: Compliance
Ensuring compliance with HVAC control requirements is difficult, as controls can be difficult to identify on plans or in the building, yet it is a crucial task. HVAC controls are a key driver of building performance and without compliance and enforcement activities, the code requirements may be ignored, overlooked, or misunderstood.This guide provides an aid that will make it easier to apply the heating, ventilation, and air conditioning (HVAC) control requirements found in building energy codes and addresses requirements defined by 2009 and 2012 editions of the International Energy Conservation Code (IECC) and ASHRAE Standard 90.1-2007 and ASHRAE Standard 90.1-2010.
Document type: State-specific
Publication Date:
Focus: Adoption
The following codes are hereby adopted for the state of Idaho Division of Building Safety and shall only be applied by local governments as prescribed by section 39-4116, Idaho Code:(a) The 2006 International Building Code shall be in effect, until such time as a subsequent version is adopted by the Idaho building code board, at which time the subsequent versions of the International Building Code as adopted and amended by the Idaho building code board through the negotiated rulemaking process as established in section 67-5221, Idaho Code, and as further provided in subsection (5) of this section and in accordance with subsections (2) and (3) herein shall be in effect.
Document type: State-specific
Publication Date:
Focus: Adoption
This document serves as an example for cities or counties within Idaho to use when creating model building code ordinances.
Document type: State-specific
Publication Date:
Focus: Adoption
Title 39, Chapter 41, "Idaho Building Code Act" (§ 39-4101) of the Idaho Statutes and Administrative Rules authorizes the state division of building safety and local governments to adopt and enforce building codes pursuant to the provisions of this chapter.
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Alabama, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Alaska, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Arizona, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Arkansas, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of California, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Colorado, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: April 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.Complete IECC Prototype Building Model packages include files for every state by IECC version.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).Note: each of these files are over 100 MB in size; download times may vary.
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Connecticut, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Delaware, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the District of Columbia, using a customized version of the 2009 IECC as the baseline code with improved wall and ceiling insulation levels.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Florida, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Georgia, using a customized version of the 2009 IECC as the baseline code with better windows.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Hawaii, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Idaho, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Illinois, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Indiana, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Iowa, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2011
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Kansas, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Kentucky, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Louisiana, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Maine, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Maryland, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Massachusetts, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Michigan, using a customized version of the 2009 IECC as the baseline code without duct testing requirements.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Minnesota, using a customozed version of the 2006 IECC as the baseline code with lower wall and ceiling insulation levels.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Mississippi, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Missouri, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Montana, using a customized version of the 2009 IECC as the baseline code with R-21 walls and U-0.33 windows.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Nebraska, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of Nevada, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).
Document type: Model Data
Publication Date: May 2012
Focus: Code Development
The International Energy Conservation Code (IECC) prototype building models (prototype models) were developed by Pacific Northwest National Laboratory (PNNL), in support of DOE's Building Energy Codes Program (BECP), to simulate energy savings associated with changes in energy codes and standards. For residential buildings, PNNL utilized two base prototypes to simulate both Single-family detached house, and Multi-family low-rise apartment building types. Energy models for the 2006, 2009 and 2012 versions of the IECC are available for each state.This set of IECC Prototype Building Models is for the state of New Hampshire, using the 2006 IECC as the baseline code.Each ZIP file includes EnergyPlus model input files (.idf) and corresponding output files (.html).

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