A. There shall be installed in all apartment buildings of three (3) floors or more, containing five (5) apartment units or more, a complete exit and emergency system, exit signs to be fed from an emergency panel that is fed from the line side of the main switch. Emergency and exit sign illumination shall be obtained from battery powered emergency lighting units located so as to provide emergency illumination to all points of egress. Exit signs may be constructed of plastic pursuant to Chicago Electrical Code section 700.66(c)(3).
B. In all retail stores, commercial buildings, office buildings, restaurants, lounges or other places of public use or assembly, where an occupancy is eight hundred (800) square feet or larger, a battery powered exit sign system shall be installed which shall operate on the battery during a power failure.
C. In all retail stores, commercial buildings and office buildings, of two thousand (2,000) square feet or larger, and in all restaurants, lounges or other places of public use or assembly, of eight hundred (800) square feet or larger, an emergency lighting system shall be installed. Said emergency lighting system is to be energized by either an auxiliary electrical generating system, or by a wet electrical storage battery system, whereby either are activated automatically upon the failure of the normal source and supply of electrical energy. Emergency illumination of sufficient lumens shall be provided for all stairways, staircases, exit doors, internal fire hose locations, exit aisles and corridors. Also, emergency lighting with battery backup shall be provided in all washrooms having two (2) or more water closet fixtures.
D. For purposes of this section, the phrase "other places of public use or assembly" shall mean something other than a restaurant or lounge used by fifty (50) or more persons for religious, recreational, educational, political, social, or amusement purposes, and not specified in this section, including, but not limited to: gymnasiums, club rooms, conference rooms, courtrooms, and banquet halls. (Ords. 76-16-30, 78-24-60, 84-6-12, 94-3-8, 01-09-32, 21-07-29)