ARCHIVED - 3.2.6.6.(4)

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3.2.6.6.(4)

Application

Intent

OS1


Objective	OS1 Fire Safety
Attribution	[F03-OS1.2] [F12-OS1.2,OS1.5]
Application	Application 1: Prohibition on the use of elevator hoistways for the venting required by Sentence 3.2.6.6.(1) [venting floor areas to the outdoors]. This applies to high buildings, as defined in Sentence 3.2.6.1.(1): of Group A, D, E or F major occupancy classification that are more than: 36 m high, measured between grade and the floor level of the top storey, or 18 m high, measured between grade and the floor level of the top storey, and in which the cumulative or total occupant load on or above any storey above grade, other than the first storey, divided by 1.8 times the width in metres of all exit stairs at that storey, exceeds 300, containing a Group B major occupancy in which the floor level of the highest storey of that major occupancy is more than 18 m above grade, containing a floor area or part of a floor area located above the third storey designed or intended as a Group B, Division 2 occupancy, and containing a Group C major occupancy whose floor level is more than 18 m above grade.
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Intent	Intent 1: To exempt elevator hoistways from the application of Sentence 3.2.6.6.(1). This is to limit the probability that the use of elevator hoistways for venting floor areas will lead to exposure of persons in the elevator cars to smoke, or the spread of smoke to other parts of the building, which could lead to: harm to persons, including emergency responders, in elevator cars, and delays or inefficiencies in fire emergency response operations, which could lead to: delays in evacuation or moving to a safe place, which could lead to harm to persons, including emergency responders, and the spread of fire to other parts of the building, which could lead to harm to persons, including emergency responders.
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