All movie theaters must be licensed pursuant to the provisions of Chapter 67, Amusements and Amusement Devices, of this Code.
The use of cellulose-nitrate motion picture film is hereby forbidden.
Motion picture projectors shall not be operated unless located in approved enclosures having all projection openings protected with approved gravity shutters and in accordance with the following requirements:
A. 
Ventilation generally. Ventilation shall be provided by one or more mechanical exhaust systems which shall draw air from each arc lamp housing and from one or more points near the ceiling. Systems shall exhaust the outdoors either directly or through a noncombustible flue used for no other purpose. Exhaust outlets shall be equipped with fusible links. Exhaust capacity shall be not less than 15 nor more than 50 cubic feet per minute for each arc lamp housing, plus 200 cubic feet per minute for the room itself. Systems shall be controlled from within the enclosure and have pilot lights to indicate operation. The exhaust system serving the projection room may be extended to cover rooms associated therewith, such as rewind rooms. No dampers shall be installed in such exhaust systems. Ventilation of these rooms shall not be connected in any way with ventilating or air-conditioning systems serving other portions of the building.
B. 
Exhaust ducts. Exhaust ducts shall be of noncombustible material and shall either be kept one inch from combustible material or covered with one-half ( 1/2) inch of noncombustible heat insulating material and shall be equipped with fusible links.
C. 
Fresh air intakes. Fresh air intakes other than those direct from the open air shall be protected by approved fire shutters arranged to operate automatically with the port shutters.
D. 
Lights. Provision shall be made so that the auditorium lights can be turned on from inside the projection room and from at least two other convenient points in the building.
E. 
Portholes. All portholes in projection booths shall be equipped with safety glass, and projection shall be made through said glass.
F. 
Emergency exits. Emergency exits shall be provided. At least one of said exits shall be a roof hatch.
Film shall be stored only in approved-type steel bins.
All draperies, chairs, carpets and any other decorative material used in motion picture theaters shall be flameproof. Certificates of the manufacturer or approval by any nationally recognized rating organization shall be prima facie proof of flameproofing.
All lighting fixtures and appliances used in motion picture theaters shall be equipped with explosionproof bulbs.
All exit doors shall be conspicuously marked with "EXIT" signs and shall be equipped with panic bars.