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3.3.4.4.(5) | Application | Intent |
OS3 |
Objective | OS3 Safety in Use |
Attribution | |
Application | Application 1: Opening of a doorway from a dwelling
unit directly into an exit stairway, where
the dwelling unit has a second and separate means of egress. This applies
to buildings of residential
occupancy described in Sentence 1.3.3.2.(1) of Division A. that
are not more than 3 storeys in building height.
Application 2: This also applies to tents and air-supported
structures, as stated in Sentences 3.1.6.1.(1) and 9.10.1.2.(1).
Exceptions:
except as stated in:
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Intent | Intent 1: To exempt a doorway serving a dwelling unit from the requirements
of Sentences 3.3.1.3.(8) and (9), which would otherwise require a doorway to the exterior, a
public corridor or an exterior passageway, on the basis that there is a second
means of egress from the dwelling unit available if the route through the
exit stair is impeded, blocked, or untenable. This is
to limit the probability that persons will not have the choice of an alternative
egress route in the case where one route is blocked or obstructed in an emergency
situation, which could lead to delays in the evacuation or movement of persons
to a safe place, which could lead to harm to persons.
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