Theatre Catalog (1946-47)

MOGI a pipe, provided the water pressure at that elevation be not less than 15 pounds, and is sufficient to supply not less than 15 gallons a minute. 164. Film in cabinets shall be in individual roll containers or in I.C.C. shipping containers. Materials other than film shall not be stored in the same cabinet with film. Section 17—Film Vaults 171. Construction—(a) Vaults shall be constructed in accordance with plans submitted to and approved by the inspection department having jurisdiction. (b) Vaults shall not exceed 750 cubic feet in inside dimensions. (c) Walls and floor shall be constructed of not less than 8 inches of brick, 6 inches of reinforced concrete, or of 12 inches of hollow tile plastered on both sides with cement plaster to a thickness of at least 42 inch; they shall be without cracks or holes permitting escape of gases of combustion into the building. (d) Vaults shall be supported by masonry or steel of sufficient strength to carry the load safely. Beams shall rest at both ends on steel girders, iron or steel columns, or walls or piers of masonry. The supports shall afford at least 4 hours’ protection as determined by the Standard Fire Test. Hollow tile shall not be used for foundation walls or for walls of other than the top vault where yaults are superimposed. (e) The roof shall be of reinforced concrete at least 6 inches thick; where the floor or roof above is equivalent to this, it may serve as the vault roof; a heavy wire screen of not less than 2 inch FILM STORAGE VAULT, showing the construction of racks and installation of partitions, baffles, sprinklers, and mesh, or its equivalent may be installed below the required roof to limit the interior vault space to 750 cubic feet. (f) Vaults shall be provided with suitable drains or scuppers to the outside of the building. (g) Proximity to stacks and other sources of heat shall be avoided. 172. Doors.—Door openings shall be protected with approved fire doors, one on each face of the wall. Note—Vaults may have two door openings. Such ar arrangement is often a great convenience, as in laboratories, where the vault is located between rooms and used for the temporary storage of film in precess. Doors shall be of the type suitable for use in Class B situations as defined in the Regulations for the Protection of Openings in Walls and _ Partitions Against Fire. The interior door shall be automatic. The outer door shall be of the swinging type and close into an approved frame or otherwise made tight to prevent the passage of flame around the edges. It shall be self-closing, and if fastened open shall be arranged to close automatically in case of fire originating in or out of the vault. Approved quickoperating devices for closing vault doors are recognized as having advantages over the fusible link, and their use is recommended. 173. Vents.—(a) Each vault shall be provided with an independent vent having a minimum effective sectional area of 140 square inches per 1,000 pounds of film capacity (equivalent to 70 square inches per 100 standard rolls). The vent area for a vault of 750 cubic feet shall be not less than 1,400 square inches. vent. The vaults must not exceed 750 cubic feet in inside dimensions. The walls have to be not less than 8 inches of brick, or 6 inches of reinforced concrete, or 12 inches of hollow tile plastered on both sides with a cement plaster at least /2-inch thick. The walls are to be without cracks or holes permitting escape of combustion gases. Thiet e i i] /meetce a ae me ere ae Tritt iii) Sideinaeaedaen (egcnnanenseens + /ecananeennan 492 Note—In determining the proper vent opening, allowance must be made for the window frame and sash, for the area of the glass is considered the effective sectional area of the vent opening. (b) Vent flues inside the building shall be constructed of 5 inches of reinforced concrete or of a construction equivalent to that required for smoke chimneys, Exterior flues shall be of a construction equivalent to that of smoke stacks. (c) The outlet of each vent shall be above roof or shall be made to face street, court or other clear opening which will give a distance of at least 50 feet to any window or other opening exposed thereby and not in the same plane, and a distance of at least 25 feet to any fire escape on the same or higher level. (d) Vaults, especially those having a vent in the form of a window, shall be arranged in some manner which will protect the film in the vault against ignition by,— (1) Rays of the sun, whenever the film in the vault is exposed to direct rays of the sun entering through the vent. This may be done by painting the glass in the vent opening a dark color; (2) Radiated heat entering through the vent opening, as from an exposure fire, whenever the vent is severely exposed by buildings or storage of combustible material, or by other openings in the same wall. Note—To effect the above protection, one method which has been used employs two baffle walls inside the vault. The baffle wall nearer the vent should extend from the ceiling down to within about 3 fect of the floor, and the inner baffle wall from the floor up to within about 8 feet of the ceiling. Baffle walls should be of substantial construction and should be so spaced and arranged as to afford the full required vent area from the film storage space to the outside. (e) Each vent shall be _ protected against the weather by single thickness glass (1/16 inch thick), in a sash arranged to open automatically in case of fire by the means of an approved releasing device placed inside the vault. The use of approved quick operating devices is recommended. The area of the glass shall be the effective sectional area of the vent opening. No pane of glass shall be smaller than 200 square inches. Any protection equivalent to the above may be accepted in lieu thereof. (f) A light wire screen not coarser than % inch mesh shall be placed in each vent. Bars or screen designed to prevent burglary or injury to contents shall not have a mesh of less than 4 inches, shall be located inside the light wire screen, and shall give a net opening equal to that called for in (a). Bars and screens shall be so arranged as not to interfere with the automatic operation of the sash. 4 (g) Film yaults shall not be provided with skylights or glass windows other than as specified for vents. 174. Racks.—Racks in film vaults shall be of metal or other incombustible material and arranged for the storage of single reel containers on edge or for 1.C.C. shipping containers. Negatives need not be stored on edge. Vertical incombustible partitions equivalent in durability and heat insulation to %-inch hard asbestos and extending from floor to top of rack shall be provided to divide THEATRE CATALOG 1946-47 =