ARCHIVED - 3.2.6.5.(3)

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3.2.6.5.(3)


Objective	OS1 Fire Safety
Attribution	[F06-OS1.2,OS1.5]
Application	Application 1: Protection of elevators for use by firefighters. 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. Application 2: Clauses 3.2.6.5.(3)(b) and (c) also apply to elevators serving floor areas above or below the first storey that are not sprinklered throughout and that have a barrier-free path of travel, as stated in Clause 3.3.1.7.(1)(a).
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Intent	Intent 1: To limit the probability of direct exposure of the elevator door interlock mechanism to fire, which could lead to the failure of the interlock mechanism and the opening or partial opening of the elevator doors during the time required to achieve occupant safety and for emergency responders to perform their duties, which could lead to: harm to persons, including emergency responders, and the failure of the elevator operating mechanism, which could lead to the elevators not operating as intended, which could lead to 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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