CO129-545-9 Proposed reorganisation of medical and sanitary services 2-11-1933 - 10-1-1934 — Page 148

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Staircases.

which Rules as

37. Every building hereafter erected, exceeds one storey in height shall be provided with to construc- a staircase in accordance with the following pro- tion of

visions:

(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) No staircase hereafter erected shall be con- structed 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 satisfaction of the Building Authority.

(4) Every building hereafter provided with stairs shall have a staircase giving egress 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, there shall be provided to the satisfaction of the Building Authority an additional staircase giving egress on the roof 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, lobbies and passages from one flight to another, hereafter erected in any building which is con- structed or adapted or converted to be used either wholly or in part as a Public building, a tenement house for separate families or for offices, shall be of fire resisting materials at least three inches thick and all to the approval of the Building Authority. All doors and window openings or glazed partitions communicating with any such staircase shall be adequately protected by fire resisting doors of solid teak not less than two inches thick or by wired glazing or by some other method equally satisfactory to the Building Authority.

(6) Every main staircase hereafter erected shall be provided with a handrail properly fixed on at least one side of every flight and no flight, landing, lobby or passage from one flight to another shall be of less width than three feet unless otherwise approved by the Building Authority.

(7) Every staircase and all landings, lobbies and passages from one flight to another shail at all times

be kept open and free from any obstruction

whatsoever.

staircases.

Lifts and lift shafts.

38.-(1) Every lift or hoist shaft hereafter erected shall be enclosed by walls of fire resisting materials at least three inches thick and shall be ventilated from the highest point direct to the outer air, to the satisfaction of the Building Authority.

(2) The door to every lift or hoist shaft hereafter erected shall be of fire resisting material and when such lift or hoist is used for the conveyance of passengers the door shall be so arranged that it can

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