H 6
CAP. 123] Building (Refuse Storage Chambers and Chutes) Regulations
[1984 Ed.
[Subsidiary]
Refuse chute to be provided with shutter.
Ventilating pipe for refuse chute.
Inspection and cleansing of refuse chute.
Construction of internal surface of refuse chute.
Situation of hopper.
Construction of hopper.
18. Every refuse chute shall be provided at its lower end with a galvanized or stainless steel shutter so constructed as to enable the chute to be closed when necessary.
19. (1) Every refuse chute shall be provided at the top thereof with a ventilating pipe.
(2) Every such ventilating pipe shall-
(a) have an internal area of not less than 0.05 m2; and
(b) be carried up from the top of the refuse chute to a height, above the roof of the building, of not less than 1 m.
(3) (a) The end of every such ventilating pipe shall be provided with a grating or grille having apertures of an aggregate area not less than the sectional area of the pipe. (b) The least dimension of every such aperture shall be not more than 10 mm.
20. (1) Every refuse chute shall be provided, above the level of the highest hopper, with an access opening, not less than 225 mm in diameter, for the inspection and cleansing of the chute.
(2) Every such access opening shall be provided with a close-fitting metal cover.
21. (1) The internal surface of every refuse chute shall be smooth and impervious and shall be formed of or lined with glazed ware or other approved material.
(2) Where such surfaces are formed of or lined with pipes, the pipes shall be-
(a) jointed in-
(i) cement mortar in the proportion of one volume of cement to one volume of sand; or
(ii) other approved material; and
(b) securely and solidly bedded into the walls of the chute.
22. Every hopper shall be situated in a place permanently ventilated to the open air.
23. (1) The mouth of every hopper shall have a clear opening having dimensions not less than 250 x 150 mm and not more than 350 x 250 mm.
(2) Every hopper shall be so constructed-
(a) that it will remain only in a completely closed or completely open position and will not open of its own accord; and
(b) as to prevent the escape of dust or fumes both when it is closed and when it is open.
(3) Every hopper and frame shall be so constructed as to prevent refuse becoming lodged therein.