905.3.1 Applicability.
BC § 905.3.1
Class III standpipe systems shall be installed throughout the following buildings: 1. In buildings two stories or more in height with floor area of 10,000 square feet (929 m 2 ) or greater on any story; 2. In buildings three stories or more in height with floor area of 7,500 square feet (696.8 m 2 ) or greater on any story; 3. In buildings of any area with a floor level having an occupant load of 30 or more that is located 55 feet (16 764 mm) or more above the lowest level of Fire Department vehicle access; and 4. In buildings of any area, constructed in accordance with Section 403, with occupied floors located 75 feet (22 860 mm) or more above the lowest level of Fire Department vehicle access. Exceptions: The following exceptions are allowed as an alternative to the requirement of a Class III standpipe system: 1. Class I standpipes are allowed in buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2 provided that the following additional requirements are met: 1.1. A locked noncombustible storage cabinet shall be provided on the main entrance floor. One additional locked storage cabinet shall be provided on every tenth floor above the main entrance floor, such that no occupant on any floor would have to travel more than five floors to reach a cabinet in a location within 15 feet (4572 mm) of each standpipe riser. Where one standpipe riser is installed in the building, such cabinet shall contain at least one fog nozzle, one 1 1/2-inch (38.1 mm) spanner wrench, one 2 1/2-inch (63.5 mm) spanner wrench, one 2 1/2-inch (63.5 mm) by 1 1/2 inch (38.1 mm) nonswivel reducing coupling, and 125 feet (38.1 m) of 1 1/2 inch (38.1 mm) hose. 1.1.1. The cabinet shall be kept locked, openable by a Fire Department citywide standard key. 1.1.2. The cabinet shall be labeled, "FOR FIRE DEPARTMENT USE ONLY." 1.1.3. A metal sign stating clearly where the storage cabinet is located shall be placed in each stair enclosure on the main entrance floor and on each floor where the cabinet is located. 1.2. Hose valves are capped with a hose valve cap fastened to the valve with a chain.
2.Class I manual standpipes are allowed in open parking garages where the highest floor is located not more than 150 feet (45 720 mm) above the lowest level of Fire Department vehicle access.
3.Class I manual dry standpipes are allowed in open parking garages that are subject to freezing temperatures, provided that the hose connections are located as required for Class III standpipes in accordance with Section 905.6.
4.Class I standpipes are allowed in below-grade stories equipped throughout with an automatic sprinkler system.
5.Standpipe outlets may be omitted in portions of first floors or basements that are completely separated from the entrance hall or enclosed stairways leading to the upper floors, provided that portable fire extinguishers are installed, subject to the approval of the Fire Commissioner.
