DOB Clarifies Stair Ventilation Requirements
By Bruno Caligara Last month, the New York City Department of Buildings (DOB) clarified the stair ventilation requirements for enclosed exit stairs in properties classified as R-2 occupancies. Both the 2014 and 2022 Building Codes (2104 BC 916.3 and 2022 BC 917.3, respectively) require post-fire smoke purge systems in new construction… View more