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3.4.7.5.(2) | Application | Intent |
OS3 |
Objective | OS3 Safety in Use |
Attribution | |
Application | Application 1: Minimum height of stairway headroom. This
applies to fire escapes referred to in Sentence 3.4.7.1.(2), where:
This applies to fire escapes serving floor
areas that are intended for occupancy, including mezzanines as stated in Sentence 3.4.2.2.(1), in buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: This also applies to:
Exceptions:
except as stated in:
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Intent | Intent 1: To supersede the requirements of Article 3.4.3.4. and
permit smaller headroom clearances, on the basis that fire escapes are not
frequently used and certain conditions are met with respect to the headroom
clearances. This is to limit the probability of delays
in the evacuation or movement of persons to a safe place in an emergency situation,
which could lead to harm to persons.
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