Projection engineering (Jan-Dec 1931)

NOVEMBER, 1931 Page 17 197. Smoking. Smoking should be prohibited in any establishment handling or storing him, and conspicuous "No Smoking" signs should be posted in prominent places. Matches should not be carried by any employee. Part II. Special Provisions for Special Occupancies Section 21. Motion Picture Theatres and Other Occupancies in which the Principal Use of Film is in Motion Picture Projection 211. Motion picture projectors shall be installed in a booth in accordance with sub-section 191. 212. Rewinding of films shall be performed in a separate room at an approved location, of construction specified in sub-section 112, and with a vent to the outside of the building of not less than 27 square inches, or may be performed in the projection booth. 213. Care and use of film. Motion picture film used in connection with the projection of motion pictures (as in theatres, motion picture theatres, screening or projection rooms, sound recording studios, and motion picture titling studios) shall be limited and kept as follows : (a) The quantity of film in any projection booth or rewinding room not equipped with an approved system of automatic sprinklers shall be limited to that given below ; if equipped with an approved system of automatic sprinklers, double the quantity specified may be permitted. (1) In a projection booth or room, constructed of brick, hollow tile, concrete or other approved masonry, not exceeding 125 pounds (25,000 feet of 35 mm. film) ; (2) In a rewinding room constructed of brick, hollow tile, concrete, or other approved masonry, separated from projection room with openings thereto protected with approved fire doors, not exceeding 125 pounds (25,000 feet of 35 mm. film) ; (3) In a projection booth or room, constructed of metal frame covered with asbestos board or sheet iron, not exceeding 75 pounds (15,000 feet of 35 mm. film) ; (4) In a special room constructed and vented as required for rewinding rooms (see sub-section 212), when approved by the inspection department having jurisdiction, not exceeding 125 pounds may be kept in lieu of the amount permitted in either the projection booth or the rewinding room. The total quantity in the three rooms shall not exceed 250 pounds (50,000 feet of 35 mm. film). (b) The above quantities of film shall be kept as follows : (1) Up to 40 pounds (8,000 feet of 35 mm. film) of film may be kept in Interstate Commerce Commission shipping containers, or approved cabinet in each room ; (2) If the amount of film, on hand exceeds 40 pounds, an approved cabinet shall be provided, in which the amount of film in excess of 40 pounds shall be kept. 214. No collodion, amyl acetate or other similar flammable cement or liquid in quantities greater than Yz pint shall be kept in the projection booth or rewinding room. 215. Location. The number and location of motion picture projection rooms or booths in any non-sprinklered building shall be subject to the approval of the inspection department having jurisdiction. Section 22. Motion Picture Film Exchanges 221. Buildings not of fire-resistive construction, housing an exchange, shall be completely equipped with automatic sprinklers. Buildings of fire-resistive construction shall be equipped from and including the lowest floor on which film is handled to the top of the building iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii^iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii'iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiniiiiiii^ STANDARDIZATION OF APER j TURES FOR SOUND PICTURES 1 T°iV the December issue of Pro I | J. jection Engineering will § appear the proposed specifications | for standard aperture arrange § I ments now being studied by studio I 1 staffs and soon to be presented to § I theatre and release organizations ] 1 for consideration and approval. with an approved automatic sprinkler system. It is recommended that the sprinkler system extend throughout the building. 222. Exchanges shall be provided with one or more independent rooms to be used exclusively for receiving and delivering film, and also one or more separate rooms for the purpose of inspecting, examining and repairing film, and one or more rooms for the storage of posters or other combustible materials. 223. Shipping room. One or more vaults or cabinets shall be provided in connection with the receiving and shipping room of exchanges into which all film shall be placed and kept except during such time as is necessary for checking, sorting and shipping. All film outside the vaults and cabinets, except while actually being handled, shall be kept in I. C. C. containers. Note: With the enforcement of the above general principles of operation, the total quantity of film, including what is in I. C. C. containers, in the re ceiving and shipping room of any exchange should ordinarily not exceed 100 to 150 rolls, with a maximum limit which should never be exceeded of 300 rolls or 1,500 pounds. 224. In inspection, projection, rewinding, and other rooms (not including shipping room) there shall not be in excess of 15 rolls of film for each person handling film in such rooms, of which not in excess of two rolls for each person shall be exposed outside of closed containers. All film in excess of this quantity shall be kept in cabinets or vaults. Section 23. Motion Picture Film Laboratories 231. All buildings used for, or housing a motion picture film laboratory shall be equipped throughout with automatic sprinklers. 232. In all the various work rooms in which film is handled (not including shipping rooms) the quantity of film not in containers shall not exceed two rolls per person handling film ; this should not be construed, however, as restricting the quantity of film which may be in process on printing, developing or drying machines to two rolls. There shall not be more than 10 rolls of film not in approved cabinets for each person working in such rooms ; provided, however, that in developing rooms there shall not be more than 20 rolls of film not in approved cabinets for each developing unit. All film in excess of the above quantities shall be kept in vaults. 233. Printing. Unless printing machines are so spaced that the distance from the film on any machine to that on any other machine is at least six feet, they shall be separated from each other by incombustible partitions of %-inch hard asbestos board or its equivalent in heat insulation and durability, and extending from the floor to at least 3 feet above the top of the film on the machines. If partitions carried to this height would extend higher than 2 feet below sprinkler deflectors, they shall be built up to the ceiling. If partitions are extended to the ceiling one sprinkler head shall be located in each of the sections thus formed. In any event, sprinklers shall be so arranged that not more than two machines are dependent upon the protection afforded by any one head. 234. Drying machines of the cabinet type shall be of metal and wired glass. Heating units shall be located outside the cabinet, and shall be provided with thermostatic control so that the temperature in the cabinet shall not exceed 110° F. 235. Waxing. Waxing film shall be done in a separate room. Waxing processes which require the waxed film to be left exposed to dry shall be in a room used for no other purpose and not