704. MEANS OF EGRESS

704 MEANS OF EGRESS Insert a new Section 704.2 into the Existing Building Code to read as follows: 704.2 Allowance for Fire Resistance Upgrading. When improving the fire resistance rating of the enclosure of stairways, exit access corridors or exit passageways complying with Section 1005 of the Building Code, a tolerance of up to 1-1/2 inches (38 mm) shall be allowed in the minimum width of those elements of egress. When improving the fire resistance rating of a wall assembly on one side of stairways, exit access corridors or exit passageways, a tolerance of up to 3/4 inches (19 mm) shall be allowed in the minimum width of those elements of egress. SOURCE: Final Rulemaking published at 67 DCR 6491 (May 29, 2020 – Part 2). The District of Columbia Existing Building Code (2017), referred to as the “Existing Building Code,” consists of the 2015 edition of the International Existing Building Code (International Existing Building Code), published by the International Code Council (ICC), as amended by the Existing Building Code Supplement of 2017 (12-J DCMR). The International Existing Building 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/public/collections/. District of Columbia Municipal Regulations Existing Building Code Supplement of 2017 12-J DCMR § 704