404. ATRIUMS

404 ATRIUMS Strike Section 404.5 from the International Building Code and insert a new Section 404.5 into the Building Code in its place to read as follows: 404.5 Smoke control. A smoke control system shall be installed in accordance with Section 909. Exception 1: Except for Group I-2 and Group I-1, Condition 2, smoke control is not required for atriums that connect only two stories. Exception 2: Except for Group I-2 and Group I-1, Condition 2, smoke control is not required for atriums where all exit access above the lowest level of the atrium is separated from the atrium in accordance with Section 404.6. Exception 3 to Section 404.6 shall not apply. SOURCE: Final Rulemaking published at 67 DCR 5690 (May 29, 2020 – Part 2). The District of Columbia Building Code (2017), referred to as the “Building Code,” consists of the 2015 edition of the International Building Code (International Building Code), published by the International Code Council (ICC), as amended by the Building Code Supplement of 2017 (12-A DCMR). The International 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/document/IBC2015. District of Columbia Municipal Regulations Building Code Supplement of 2017 12-A DCMR § 404