All automatic elevators shall be equipped with an approved automatic elevator recall system. All high-rise buildings shall have an alarm system meeting the requirements of this section. All required fire alarm systems shall be designed to be heard clearly by all occupants within the building, but in no case shall it be less than 60db or 15db above ambient noise levels, as measured in the A scale, within all occupiable areas of the building. All required alarm systems shall operate automatically by smoke or products of combustion detectors and by manual pull stations as approved by the chief. In fully sprinklered buildings, the alarm system shall be required to operate by manual pull stations and automatically only by waterflow detection.
Staged evacuation is permissible if approved by the fire chief.
All fire alarm systems shall be connected to an approved central station or the local fire department dispatch office in conformance with the fire code as approved by the fire chief. In fully sprinklered buildings, the sprinkler system shall be fully supervised. Exits shall be illuminated at any time the building is occupied with lights having an intensity of not less than one foot candle at floor level. Such lighting shall have an independent alternate source of supply such as an emergency battery pack. The management for all buildings shall establish and maintain a written fire and life-safety emergency plan, which has been approved by the fire chief.