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916.2 Instructions.
Operating, testing and maintenance instructions and record drawings ("as-builts") and detailed specifications of all the components shall be provided at an approved location.
916.3 Where required.
ARCS, which shall be in accordance with this section, shall be required in the following:
1. High-rise buildings constructed in accordance with Section 403.
2. Underground buildings constructed in accordance with Section 405.
3. Buildings having a total gross area exceeding 250,000 square feet (23 225.8 m
2
).
Exceptions:
1. Group R-2 buildings that meet all of the following requirements:
a. The highest occupied floor is less than 125 feet (38 100 mm) above the lowest level of Fire Department vehicle access;
b. The building has no more than 1 story below grade; and
c. The floor area of the building does not exceed 250,000 square feet (23 225.8 m
2
).
2. Where it is determined by the Fire Department that a radio communication system is not required.
917.1 Scope and purpose.
The purpose of this section is to establish minimum requirements for the design and installation of post-fire smoke purge systems, which are intended for the timely restoration of operations and overhaul activities once a fire is extinguished. Post-fire smoke purge systems are not intended or designed as life safety systems and are not required to meet the provisions of Section 909. Post-fire smoke purge systems shall be required in:
1. High-rise buildings subject to Section 403.
2. Buildings with any story exceeding 50,000 square feet (4645.2 m
2
) in floor area.
3. Building with spaces exceeding 100 feet (30 480 mm) from natural ventilation openings. Natural ventilation openings shall consist of operable windows and doors of at least five percent of the floor area or roof vents per Section 910.
4. High piled stock or rack storage in accordance with the New York City Fire Code.
Exceptions: A post-fire smoke purge system is not required in Group R-2 occupancies where either of the following conditions exists:
1. Openable windows. A post-fire smoke purge system is not required where every habitable room located in dwelling units is provided with windows complying with Chapter 12 and all of the following:
1.1. Minimum window area. Each required window shall provide at least 12 square feet (1.1 m
2
) of glazed area. The total area of all such windows shall not be less than 10 percent of the floor area of the room or space served.
1.2. Minimum openable area. Each required window shall provide a minimum of 6 square feet (0.56 m
2
) of openable area. The total area of all such openings shall not be less than five percent of the floor area of the room or space served. In addition, each required openable area shall be:
1.2.1. Located wholly at least 30 inches (762 mm) above the finished floor; and
1.2.2. Fully openable to the minimum 6 square feet (0.56 m
2
), at all times and without limiting stops or devices. Such openings may be achieved through the use of double-hung, sliding, or similar types of windows. However, in the event of the use of casement-, hopper-, pivot-, or awning-type windows, such windows shall satisfy the requirements of this section only when they open to at least 75 degrees.
2. Smokeproof enclosures. A post-fire smoke purge system is not required where all exits are constructed as smokeproof enclosures in accordance with Section 1023.11.
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