917.3.2 Corridor ventilation.
BC § 917.3.2
The ducts and fans that provide fresh air supply to the public corridors in accordance with the New York City Mechanical Code shall be provided with reversible fans and duct sizes capable of introducing fresh air to or exhausting air from the corridor at a rate of 6 air changes per hour or 1 cubic foot per minute per square foot (cfm/ft 2 ) (0.00508 m 3 /s • m 2 ), whichever is greater, based on the area of the largest apartment plus the area of the public corridor. Such system shall be operated by manual controls that are part of the fire command center, as per Section 911 of this code, or fire alarm panel when a fire command center is not required. Each floor to be ventilated shall be by individual controls. Such control center or panel shall display a graphic indicating the portions of the building served by each post-fire smoke purge system.
