Description

• Emergency Lighting Independently powered or battery equipped light sources that are designed to activate when a power outage creates low-visibility conditions. 
• The NFPA standards require that the emergency lighting come on automatically. The lights must provide illumination for a minimum of 1.5 hours. The illumination should be at least an average of one foot-candle (10.76 lux) at foot level along the path toward the exit. The NFPA 110 and 111 address the standard requirements for Stored Electrical Energy Emergency and Standby Power Systems. These standards cover the performance requirements for emergency and standby power systems intended to provide an alternate source of electricity in buildings and facilities if the regular electrical power source fails. Systems include power sources, transfer equipment, controls, supervisory equipment, and accessory equipment needed to supply electrical power to the selected circuits.  
• Projects in this scope area may include repairing and/or replacing emergency lighting fixtures and exit lighting panels; installing electrical lines and backup power; and installing new plasterwork/drywall around lighting and signs. The full, detailed scope of work for this project including any additional work areas will be updated here after alignment with project stakeholders through scoping and design activities. 
• Exit signs shall be comply with Section BC 1013 of the 2022 NYC Building Code. The locations of exit signs will be indicated on the Contract Drawings by the Architect of Record. Means of egress should be clearly marked by illuminated exit signs with 8” letters to ensure that exits and path of egress are easily identifiable from any point in a corridor or Place of Assembly.  
• Exit signs placement should be so that no point in an exit access corridor is more than 100 feet or the UL1 listed viewing distance for the sign, whichever is less, from the nearest visible exit sign. Wall-mounted exit signs are preferred over pendant mounted exit signs. Pendant-mounted exit signs should be strictly limited to meet visibility requirements, and only used when additional wall-mounted units may not be suitable for the purpose.   
• Exit signs should be positioned at least five feet away from fire alarm strobes. 
• In buildings with a generator, exit signs must be connected to the emergency lighting panel through a transfer switch. 
• For buildings without a generator, exit signs should be equipped with battery packs and powered from the same source as the area lighting for the space, the exit signs shall be connected to a dedicated circuit with a locked breaker from the electrical power panel. 
• If mechanical rooms on the roof require two means of egress per Section BC 1006.2.2.1, exit signs are necessary outside of the mechanical room. If one of these exits is the exterior door to the roof, then an exterior exit sign on the exterior side of the stair bulkhead door is required to direct occupants back into the building to the required egress path. Exterior exit signs should be of the “weatherproof” type. 

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Last Updated on October 10, 2024 at 12:49 pm

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26 51 00 Interior Lighting