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(4) No cockleft shall, without the permission of the Building Authority, be hereafter erected in any domestic building which exceeds forty feet in depth.
(5) No portion of the space either above or below any cockloft shall be inclosed except by wire netting, lattice work or carved woodwork, arranged in such a way as to leave at least two-thirds open, and as far as practicable evenly distributed.
(6) No cockloft shall be erected or if already existing be allowed to remain, in any kitchen.
(7) No cockloft shall be used for any purpose other than storage.
(8) Every cockloft shall, unless the Building Authority shall otherwise permit, be supported directly from the ground by pillars or columns to the satisfaction of the Building Authority in such manner that no additional load is placed such cockloft is upon any wall of the building in which situated, provided that any existing cockloft, for which a permit in writing has been issued by the Sanitary Board or Building Authority, shall be allowed to remain, subject to the conditions of such permit.
Staircases.
43. Every building hereafter erected, which exceeds Rules as one storey in height shall be provided with a staircase in to construc accordance with the following provisions :-
(1) Every main staircase hereafter erected shall be so arranged as to have a tread of not less than nine inches from the face of one riser to the face of the next and no riser shall be of a greater height than seven inches.
(2) Every staircase hereafter erected shall, unless exempted by the Building Authority, be inclosed by walls of fire resisting material and shall not be constructed with a soffit so as to form any enclosed space between the treads, the risers and such soffit, unless otherwise approved by the Building Authority.
(3) At every storey on every staircase hereafter erected adequate light and ventilation shall be provided to the satis faction of the Building Authority.
(4) Every building hereafter provided with stairs shall have a staircase giving direct access to a street or lane, or to an open space leading thereto, to the satisfaction of the Building Authority, and in the case of a building of more than two storeys in height, or in which any floor is more than twenty three feet above the level of the street, such staircase shall be continued to give egress on to the roof of the top storey or there shall be provided to the satisfaction of the Building Authority an additional staircase from the floor of the second floor storey giving egress on to the roof of the top storey or some other satisfactory means of escape in the case of fire.
(5) Every main staircase, including the treads, risers, strings and other supports, and all landings, enclosure walls. lobbies and passages from one flight to another, hereafter
tion of
staircases.
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