F101. SCOPE

AF101 SCOPE Strike Section AF101.1 in Appendix F of the International Residential Code in its entirety and insert new Section AF101.1 in Appendix F of the Residential Code in its place to read as follows: AF101.1 General. Radon-resistant construction built in accordance with Section AF103 is required for new construction. These requirements are intended to provide a passive means of resisting radon gas entry and prepare the dwelling for post-construction radon mitigation, if necessary (see Figure AF102). Additions and Level 3 alterations should test their homes for radon and make radon testing results available upon request by the code official at permitting. If the testing results show 4 or more picocuries per liter (pCi/L) of radon, a radon system compliant with AF103 shall be installed for the work area. Exception: Additions less than 100 square feet. FIGURE AF101 RADON-RESISTANT CONSTRUCTION DETAILS FOR FOUR FOUNDATION TYPES SOURCE: Final Rulemaking published at 67 DCR 6033 (May 29, 2020 – Part 2). The District of Columbia Residential Code (2017), referred to as the “Residential Code,” consists of the 2015 edition of the International Residential Code (International Residential Code), published by the International Code Council (ICC), as amended by the Residential Code Supplement of 2017 (12-B DCMR). The International Residential Code is copyrighted by the ICC and therefore is not republished here. However, a copy of the text may be obtained at https://codes.iccsafe.org/public/document/IRC2015. District of Columbia Municipal Regulations Residential Code Supplement of 2017 12-B DCMR § AF101