47. Refuse chutes: Refuse chutes shall:(a) be enclosed by a separation having a fire-resistance rating of at least:i. 1 hour, if the refuse chute is equipped with a selflatching closure, certified by one of the following agencies: Underwriters’ Laboratories of Canada, Underwriters’ Laboratories Inc. or by Factory Mutual and held open by a fusible link; or
ii. 2 hours, if the chute outlet does not have a device as mentioned in subparagraph i;
(b) be equipped with approved self-closing closures and located in rooms separated from other rooms having a fire resistance rating of not less than 3/4 hour and used for no other purpose;
(c) discharge in non-combustible binds or rooms separated from the remainder of the building and having a fire-resistance rating of not less than 2 hours;
(d) be equipped with automatic sprinklers:i. at the top;
ii. at every fifth floor levels;
iii. in the bin or room into which the chute discharges;
(e) be ventilated and equipped with spray equipment for cleaning purposes;
(f) be kept closed at the point of discharge.