N.Y.C. Admin. Code § EBC 902: Section EBC 902: Special Use and Occupancy

902.1 Uses and occupancies subject to Chapter 4 of the New York City Building Code.

Except as stated in Section 901.2.2 of this code, where an existing building occupied by a use or occupancy that is identified in Chapter 4 of the New York City Building Code is undergoing a level 2 alteration, such alteration work within the work area shall comply with the applicable requirements of Chapter 4 of the New York City Building Code and this section.

902.1.1 High-rise buildings.

Within work areas in buildings having occupied floors more than 75 feet (22 860 mm) above the lowest level of fire department vehicle access, alteration work shall comply with applicable provisions of Section

403

of the

New York City Building Code

and Sections 902.1.1.1 through 902.1.1.7 of this code.

902.1.1.1 Smoke detection systems control and ducts and air transfer openings.

All duct and air transfer openings within the work area and all fan systems serving the work area shall be newly installed or made to comply with Sections 606 and 607 of the New York City Mechanical Code.

Exception: The standby power requirements of Sections 606 and 607 of the New York City Mechanical Code shall not apply if both of the following conditions are met:

1. Standby power systems do not exist or existing standby power systems have insufficient capacity to serve this load.

2. New standby or emergency power is not required by Section 902.1.1.7 of this code.

902.1.1.2 Elevators.

Where there is an elevator or elevators for public use, at least 1 elevator serving the work area shall comply with this section. Existing elevators with a travel distance of 25 feet (7620 mm) or more above or below the main floor or other level of a building and intended to serve the needs of emergency personnel for fire-fighting or rescue purposes shall be provided with emergency operation in accordance with ASME A17.3 as amended by

Appendix K

of the

New York City Building Code

. New elevators shall be provided with Phase I emergency recall operation and Phase II emergency in-car operation in accordance with ASME A17.1/CSAB44.1 as amended by

Appendix K

of the

New York City Building Code

.

902.1.1.3 Additional exit stairway.

In existing buildings erected pursuant to the laws in effect prior to December 31, 2014, with a height exceeding 420 feet (128 m), where the work area exceeds 75 percent of the building area, the requirements for additional exit stairway of Section 403.5.2 of the New York City Building Code shall apply.

Exceptions:

1. In buildings where at least 50 percent of passenger elevators intended for general public use, including other elevators serving all floors, are used for occupant self-evacuation in compliance with Sections 3008.1 through 3008.11 of the New York City Building Code.

2. Existing fully sprinklered buildings shall be considered in compliance with Section 3008.3.2 of the New York City Building Code.

902.1.1.4 Structural integrity of exit enclosures and elevator hoistway enclosures.

Where the work area includes stairs or elevator hoistway enclosures, the design professional of record shall determine compliance of the enclosures with the structural integrity provisions of Section 403.2.3 of the New York City Building Code. Where the existing wall assembly of such enclosures do not meet the requirements of Section 403.2.3 of the New York City Building Code, the occupied side of such wall assembly within the work area shall comply with 1 of the methods provided in Section 403.2.3.2. In prior code buildings, existing concrete, masonry or masonry equivalent exit and elevator hoistway enclosures shall be deemed to comply with the structural integrity requirements of Section 403.2.3 of the New York City Building Code.

Exception: New, relocated or altered exit and elevator hoistway enclosures shall comply with all of the requirements of Section 403.2.3 of the New York City Building Code.

902.1.1.5 Smokeproof exit enclosures.

In prior code buildings, where the work area exceeds 75 percent of the building area, smokeproof exit enclosures shall be provided for all exit stairways throughout the building in accordance with Sections 403.5.4, 909.20 and 1023.11 of the New York City Building Code.

902.1.1.6 Elevator lobbies in prior code buildings.

Elevator lobbies required by Section 403.6.3 shall be constructed in accordance with Section 3006.1.1 or Section 3006.1.2 of the New York City Building Code, as applicable, on each floor being altered where the work area exceeds 50 percent of that floor.

Exceptions.

1. Elevator lobbies shall not be required for elevators that are located within other occupied tenant spaces that are not subject to alteration work.

2. Notwithstanding Exception 1, where the work area exceeds 75 percent of the building area, elevator lobbies shall be constructed in accordance with Section 3006.1.1 or Section 3006.1.2 of the New York City Building Code, as applicable, on all floors served by elevators.

902.1.1.6.1 Access to an exit stair not available.

Except as permitted by Section 902.1.1.6.2, where the elevator lobby cannot provide access to an exit, a red telephone shall be installed in the vestibule near the elevator doors in the elevator lobby to communicate with the main lobby fire command station or building manager’s office or to a central service station when the building is not attended. The phone shall provide two-way communication in accordance with Section 907.2.13.3 of the New York City Building Code and shall comply with the requirements of NFPA 72 as modified by Appendix Q of the New York City Building Code. A sign shall be posted near the phone. The sign shall read “In Case of Fire or Other Emergency, Use This Phone to Contact Lobby or Building Manager or Central Service Station”.

902.1.1.6.2 Locking of lobby doors.

Where locking devices are proposed on elevator lobby doors for security reasons to prevent access that leads to an exit, such locking devices shall be installed in accordance with 

Appendix K

of the

New York City Building Code

.

902.1.1.7 Emergency and standby systems.

Where an existing building is undergoing a Level 2 alteration and the work area exceeds 75 percent of the building area, the building shall comply with Chapter 27 of the New York City Building Code.

902.1.2 Boiler and furnace equipment rooms.

Boiler and furnace equipment rooms located within single occupancy or mixed occupancy existing buildings of Occupancy Groups I-1, I-2, I-4, R-1 or R-2 shall be enclosed by fire-resistance-rated construction in accordance with Section 509 of the New York City Building Code.