National Building Code of the Philippines

(3) Storage is not in generally accepted safety shipping  containers in any section exceeding 14.00 cubic meters. (b) Film negatives in storage or in process of handling shall be kept in heavy manila envelopes, not exceeding 12 films to an envelope. Expanding envelopes shall not be used. (c) Film negatives shall be kept in properly insulated vented cabinets, vented storage vaults or outside storage houses. Not more than 110 kilograms shall be stored in any single cabinet. Where the film stored exceeds 450 kilograms, it shall be in vented storage vault or in a detached structure or roof vault. Door openings in vault shall be of four-hour fire-resistive construction and shall be kept closed except when in use. (d) Only incandescent electric light shall be permitted: protected with substantial wire guards or vapor roof globes or both. Portable lights on extension cords are prohibited. Conspicuous "NO SMOKING" signs shall be posted. (e) No films shall be stored within 600 millimeters of steam pipes, chimneys, or other sources of heat. (f) There shall be first aid provisions of types using water or water solutions. Discarded films shall be stored and handled in the same manner as other films until removed from the premises. SECTION 1402. Classes of Film Exempted. (a) The provisions of this Section do not apply to the following: film for amateur photographic use in original packages or "roll" and "film pack" films in quantities of less than 1.40 cubic meters; safety film; dental X-ray film; establishments manufacturing photographic films and their storage incidental thereto and films stored or being used in standard motion picture booths. (b) Safety photographic X-ray film may be identified by the marking on the edge of the film. SECTION 1403. Fire Extinguishing System. Unless otherwise provided in this Code, all fire extinguishing system when so required shall be of a type, specifications, and methods of installation as prescribed in accordance with the requirements of the Secretary. CHAPTER 15 PRE-FABRICATED CONSTRUCTION SECTION 1501. Prefabricated Assembly. (a) Prefabricated assembly is a structural unit, the integral parts of which have built up or assembled prior to incorporation in the building. (b) The Secretary shall prescribe special tests to determine the structural adequacy, durability, soundness, weather and fire resistance of the prefabricated assemblies. (c) Every device or system to connect prefabricated assemblies shall be capable of developing the strength of the different members as an integral structure, Except, in the case of members forming part of a structural frame as specified in this Code. Anchorages and connections between members and the supporting elements of the structure or walls shall be capable of withstanding all probable external and internal forces or other conditions for structurally adequate construction. In structural design, proper allowances shall be made for any material to be displaced or removed for the installation of pipes, conduits, or other equipment. (d) Placement of prefabricated assemblies shall be inspected to determine compliance with this Code. CHAPTER 16 PLASTICS SECTION 1601. Approved Plastics. Approved plastic materials shall be those which have a flame-spread rating of 225 or less and a smoke density not greater than that obtained from the burning of untreated wood under similar conditions when tested in accordance with generally accepted engineering practices. The products of combustion shall be no more toxic than the burning of untreated wood under similar conditions. SECTION 1602. Installation. (a) Structural Requirements . All plastic materials shall be of adequate strength and durability to withstand the prescribed design loads. Sufficient and substantial technical data shall be submitted to establish stresses, maximum unsupported spans, and such other information as may be deemed necessary for the various thicknesses and forms used. (c) Fastenings . Fastenings shall be adequate to withstand design loads and internal and external stresses required of the assembly. Proper allowances of plastic materials in conjunction with other materials with which it is assembled or integrated shall be provided. SECTION 1603. Glazing of Openings. (a) Doors, sashes and framed openings in exterior walls of all buildings except Types IV and V Constructions may be glazed or equipped with approved plastics: Provided, that: (1) The wall in which such glazing is installed is so located that openings are not required to be fire-protected. (2) Except for Type I Construction, the location size, and spacing of such glazed openings do not exceed the values set forth by the Secretary. (3) Plastic used in glazed openings for Type II Construction shall be materials appropriate for use according to flame-spread characteristics and the location, size, and spacing of the openings do not exceed the values set forth by the Secretary. SECTION 1604. Skylights. (a) General . Approved plastics may be used in skylights installed on roofs of Types I, II, or III constructions and all buildings in these categories shall be equipped with an approved automatic fire-extinguishing system in Groups A, B, C, E, F, J, H-3 and H-4 Occupancies: Except, that: (1) Approved plastics may be used in any type of construction or occupancy as a fire venting system when approved by the Building Official. (2) Plastic may be used in approved skylights in Type II one-hour fire-resistive construction which are located 300 millimeters or more above the lower place of the ceiling. The walls of the skylight well shall be no less fire-resistive than the adjacent ceiling. (3) Where fire-resistive ceiling is not required in one-storey buildings, approved plastics may be used in skylights. (b) Installation Requirements. (1) Except in Group A Occupancies, no skylight shall be installed within 3.00 meters of a property line. (2) The edges of dome-type skylights shall be properly flashed. (3) Plastic skylights shall be separated from each other by at least 2.50 meters laterally and 3.00 meters along the slope of the roof. (c) Allowable areas . The area of individual plastic skylights shall not exceed 10.00 square meters. The total aggregate area of plastics used in skylights, monitors, and sawtooth glazing shall not exceed twenty percent of the floor area of the room or occupancy sheltered. (d) Curb Requirements . Plastic skylights in roofs having a slope of less than 1 in 3 shall have a 100 millimeters high curb. The curb may be omitted where a wire screen not smaller than No. 12 U.S. gauge with a mesh not larger than 25 millimeters is provided immediately below the skylight. The screen shall be substantially mounted below the skylight. SECTION 1605. Light-Transmitting Panels in Monitors and Sawtooth Roofs. (a) General . Where a fire-resistive rating is not required for the roof structure, and in all buildings provided with an approved automatic fire-extinguishing system, approved plastics may be used with or without such as the light- transmitting medium in monitors and sawtooth: Except, that plastics used in monitors or sawtooth roofs of Type II Construction shall be of materials appropriate to be used according to flame-spread characteristics.