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3.3.4.4.(3)
OS3
ObjectiveOS3 Safety in Use
Attribution
Application
Application 1: 
An exit from a dwelling unit [containing more than one storey], where the exit is an exterior doorway not more than 1.5 m above the adjacent ground level, and
  • it is not necessary to travel up or down more than one storey to reach the exit door, or
  • the uppermost floor level opens to a balcony not more than 6 m above the adjacent ground level.
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A.
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 multi-level dwelling unit from the application of Sentence 3.3.4.4.(2) relating to exits from each storey, on the basis that the travel to the exit doorway does not involve passing up or down more than one storey, or there is an outside balcony from the upper storey to act as a location for leaving the dwelling unit in an emergency.
This is to limit the probability of excessive travel distances to an exit 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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