Section 1401. Storage and Handling.
(a) Storage rooms of unexposed photographic and X-ray films shall be provided with automatic fire extinguishing systems in the following cases:
(1) When unexposed films in generally accepted safety shipping containers exceed the aggregate 14.00 cubic meters.
(2) Where shelving used for storage of individual packages not in said shipping containers exceed 1.40 cubic meters in capacity; and
(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.
Based on our survey, proper storage and handling is very important and was properly implemented in their dark room.
Section 1606. Plastic Light Diffusers in Ceilings.
(a) General. Ceiling light diffusers having an area greater than ten percent of any 10.00 square meters of room area shall be of approved plastics conforming to the requirements specified in this Code.
(b) Installation. Plastic light diffusers shall be installed in such a manner that they will not readily become detached when subjected to room temperature of 80ºC for 15 minutes,
Excepts, for the plastic light diffusers which are installed in the first floor area of Group C Occupancies having egress directly to the exterior of the building; and plastic light diffusers which are located between an approved automatic fire-extinguishing system and the area
to be protected other than public corridors for Group A, B,C, D, E, G, H and I Occupancies if tests required by the Secretary have established that such installation will not interfere with the efficient operation of such automatic fire-extinguishing systems.
Using of light diffuser is a common trend these days especially on large interior spaces.
Section 1804. Louvered Windows.
Regular plate, sheet, or patterned glass in jalousies and louvered
windows shall not be thinner than 5.6 millimeters minimal and not
longer than 1.20 meters. Exposed glass edges shall be smooth.
Louvered windows are mostly used in rural residences. It is practical, easy to maintain and secured.
Section 1803. Glazing.
Glass firmly supported on all four edges shall be glazed with
minimum laps and edge clearances in accordance with Section 1801
paragraph (b), Provided, that glass edge clearance in fixed openings
shall be not less than what is required for wind and earthquake
drift. For glass not firmly supported on all four edges and design
shall be submitted for approval of the Building Official. Glass
supports shall be considered firm when deflection of the support at
design load does not exceed 1/175 of the span.
Glazing plays an important role in windows. It protects us from harmful UV rays.