D.C. Mun. Regs. tit. 12-E, § 401
Strike Section 401.2 of the International Mechanical Code in its entirety and insert new Section 401.2 in the Mechanical Code in its place to read as follows:
401.2 Ventilation required. Every occupied space shall be ventilated by natural means in accordance with Section 402 or by mechanical means in accordance with Section 403. Each new dwelling unit shall be ventilated by mechanical means in accordance with Section 403 and shall have at least one opening to the outdoors for natural ventilation of not less than 4 percent of the floor area of the habitable spaces of the dwelling unit.
SOURCE: Final Rulemaking published at 61 DCR 3101 (March 28, 2014 – Part 2); as corrected by Errata Notice published at 61 DCR 5246 (May 23, 2014).
The District of Columbia Mechanical Code (2013), referred to as the “Mechanical Code,” consists of the 2012 edition of the International Mechanical Code, published by the International Code Council (ICC), as amended by the District of Columbia Mechanical Code Supplement (2013)(12 DCMR E). The International Mechanical Code is copyrighted by the ICC and therefore is not republished here. However, a copy of the text may be obtained at: http://publicecodes.cyberregs.com/icod/imc/2012/index.htm?bu=IC-P-2012-000005&bu2=IC-P-2012-000019.