1917 (#619-628) - Laserfiche WebLink

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194 Every passenger elevator car or hoist shall be provided with proper automatic apparatus to prevent its falling in case of ~ccident. Immediately below the shaft beams of elevators there shall be placed a strong metal netting of not less than 3/16" round iron and having a mesh not exceeding 2" and above this neeting there shall be a light wire netting not exceeding 3/8" mesh, all of which must be properly and firmly supported. Every elevator and its carrying beams and cables shall have a capacity of not lees than 100 pounds to the sq. ft. of caged floor, and a factor of safety of 10. Every elevator must be provided with am automatic device which will stop the car at the top and bottom floors and with safety devices which will bring the car to a stop in case of excessive speed or fai- lure in any part of the apparatus. When enclosed shall have enclosures meeting the require- ments as given above for passenger elevators and when not en- closed trap doors shall be provided at each floor which sh~l close automatically or be held back by fusible links so arranged as to allow the doors to fall shut when links are fused. Such trap doors must be covered with lock jointed tin or metal on the underside. Dumb waiters shall be enclosed in a sahft of the same construction as required for elevators or the shaft may be of metal or metal lining and in any case all openings to such shafts shall be provided with doors or curbs. In Class ~A" "B" or "C" buildings must be of the same constructiona as required for dumb waiter shafts. Class "A" "B" or "C" buildings must be constructed to meet the requirements o£ dumb waiter shafts, but if thoroughly fire stopped at each floor, doors will not be required over openings, otherwise standard fire doors must be provided at each opening. In Class "A" "B" or "C" buildings must be of fireproof construction. In case of "B" or "~" constructed buildings metal lath and plaster or metal lining will be construed as meeting the requirements. Vents from coolers or stove hoods or any vents if cut through from floor to floor in buildings of any class other than residences, must be construed to meet these requirements. Vents from coolers must not open into mir shafts in which any bath room or toilet room opens. No stairway shall surround or run alongside of an e~vator shaft or open hole unless separated from the s~me by a partition or wall of fire proof materials, or unless there is in the same building another stairway not adjacent to an elevator shaft or well hole, and in no case shall any floor of more than 10,000 sq.ft. area having less than two stairways from the top floor to the second floor. Where two stairways are required in any building they shall be placed as far as possible from each other. Class "B" and "C" buildings shall have ~ne main stairway not less than 4' O" wide fromth¢ first to the hiEhest story, and in any building having more than 6000 sq. ft. area on any floor there shall be not less than two stairways, from the top to the second floor, and there shall be in any case one permament flight of steps not less than 2' 8" wide to the roof. Every basement ~ed for the exhibition for the sale cf goods at retail shall be provided with a separate stairway at least 5' in width, for every 5000 sq. ft. of floor area thereof in such basements and such stairways shall be without winders and must have a hand rail on each side and shall be as far removed from each other as possible and shall have aisles of at least the width of the stairway connecting the stairways which shall be kept open and free from obstruction of all kinds. In all warehouses ar, d factories, the stair or stairs shall be enclosed in the same manner as required for elevator shafts, except that open stairs may be permitted from the first to the second floor for ornamental effect. All door openings in such stair enclosures shall be provided with standard self closing or automatic fire doors. And all window openings shall be pro- teoted as required for elevator shafts, At least one of such enclosed stair walls in each building shall have a simils~ con- structed enclosed hallway on the first story extending to the street. Any hotel building having an area requiring more th~ one stairway shall have at least one such continuous and enclosed stairway, and stairways from the first floor to any basement or portion thereof which is used for storage or for the mainte- nance of service for the hotel shall be enclosed as specified above. In Class D buildings, I. used for storage only, one stairway will be required 3' 6" wide, extending from top to bottom floor. Pent houses and bulk heads used for the enclosure of tan~s, the machinery of elevators, and all other pent houses or structure or building not over ~ stories in height, may be constructed of wood covered with metal, provided their height shall not exceed 10' O" nor their superficial area ten per cent of the area of the building. Any such pent house, if within 3' C" of a psmty or division fire wall, such wall must be carried up 3' higher that. such structure for a distance of at least 3'0" on each side. Where pent houses exceed the area given above, they must be constructed entirely of fireproof material. Tanks having a capacity of over 500 gallons placed on or above thc roof of any class "A" B"B or "C" building must be supported by an iron,steel or re-inforced concrete beam, the ends of which must rest on masonry walls or other fireproof construction. There must be a short outlet pipe in the bottom of each tank with a valve not less than 4 inches in diameter, which can be easily and quickly opened to drain the tank in ~