3.3.5.

(1) This Subsection applies to industrial occupancies.

(1) In addition to other requirements in this Division for the installation of automatic fire extinguishing systems, an appropriate fire extinguishing system shall be installed in every industrial occupancy floor area to provide protection if required by,

(a) the Fire Code made under the Fire Protection and Prevention Act, 1997, or

(b) the National Fire Code of Canada, in the absence of provisions referred to in Clause (a).

(1) A basement shall not be used for the storage, manufacture or handling of volatile solids, liquids or gases that generate explosive air-vapour mixtures or for processes that involve explosive dusts.

(2) Entrances and exits to a basement and to rooms containing building services shall be separate from the remainder of the building in a building in which,

(a) the storage, manufacture or handling of volatile materials can generate explosive air-vapour mixtures, or

(b) processes occur that produce explosive dusts.

(3) Basements and rooms referred to in Sentence (2) shall be separated from the remainder of the building with a vapour-tight separation.

(1) If access is provided from a storage garage to a stair tower or elevator serving occupancies above the level of the storage garage, the access shall be through a vestibule conforming to Sentence 3.3.5.7.(3).

(2) Treads and landings in interior stairs that extend to the roof of a storage garage shall be designed to be free of accumulations of ice and snow.

(3) A mechanical storage garage not more than 4 storeys in building height, in which no persons other than parking attendants are permitted above the street floor level, need not have a fire separation between the exits and the remainder of the building.

(4) A garage shall be provided with natural or mechanical ventilation in conformance with the requirements of Subsection 6.2.2. to prevent excessive accumulation of carbon monoxide, exhaust fumes or flammable and toxic vapours.

(5) Except as required by Sentence 3.8.2.2.(2), the clear height in a storage garage shall be not less than 2000 mm.

(6) A continuous curb not less than 150 mm high and a guard not less than 1 070 mm high shall be provided at every garage floor opening and around the perimeter of every floor where the exterior walls are omitted.

(7) Except for open-air storeys, every storey of a storage garage or repair garage located below grade shall be sprinklered.

(1) A repair garage and any ancillary spaces serving it, including waiting rooms, reception rooms, tool and parts storage areas and supervisory office space, shall be separated from other occupancies by a fire separation having a fire-resistance rating not less than 2 h.

(1) Except as permitted by Sentences 3.3.4.2.(4)v1 and (5), a storage garage shall be separated from other occupancies by a fire separation with a fire-resistance rating not less than 1.5 h.

(1) If access is provided through a fire separation between a storage garage and a Group A, Division 1 or Group B occupancy, the access shall be through a vestibule conforming to Sentence (3).

(2) In a building more than 3 storeys in building height, access through a fire separation between a storage garage and a Group A, Division 2, 3 or 4, or a Group C occupancy, shall be through a vestibule conforming to Sentence (3).

(3) If access is provided through a vestibule, as required by Sentences (1), (2) and 3.3.5.4.(1), the vestibule shall,

(a) be not less than 1 800 mm long,

(b) be ventilated,

(i) naturally to outside air by a vent that has an unobstructed area of not less than 0.1 m² for each door that opens into the vestibule but not less than 0.4 m², or

(ii) mechanically at a rate of 14 m³/h for each square metre of vestibule floor surface area, and

(c) have openings between the vestibule and an adjoining occupancy provided with self-closing doors with no hold-open devices.

(1) Where tools or other objects could fall from the floor of an upper level to a lower level in a room or space intended for use as a Group F occupancy, the edge of the floor at the upper level shall be provided with a toe-board extending from the floor surface to a height at least 125 mm above the floor surface.