3.3.5.4.Repair and Storage Garages (See Note A-3.3.5.4.)

(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.(4). (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 storage garage or repair garage shall be provided with natural or mechanical ventilation in conformance with the requirements of Subsection 6.3.1. and Article 6.9.1.2. 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 2 m. (6) Where storage garage or repair garage floors or ramps are 600 mm or more above the adjacent ground or floor level, every opening through such floors and the perimeter of such floors and ramps shall be provided with (a) a continuous curb not less than 140 mm high, a guard not less than 1 070 mm high and a vehicle guardrail not less than 500 mm high conforming to Sentence (7), or (b) a full-height wall conforming to Sentence (7). (7) Vehicle guardrails and full-height walls required in Sentence (6) shall be designed and constructed to withstand the loading values specified in Sentence 4.1.5.15.(1). (8) Except for open-air storeys, every storey of a storage garage or repair garage located below grade shall be sprinklered.