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3.3.2.10.(5)
OS3
ObjectiveOS3 Safety in Use
Attribution
Application
Application 1: 
Aisles in Group A, Division 4 occupancies.
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Intent
Intent 1: 
To exempt aisles in Group A, Division 4 occupancies from the requirements of Article 3.3.2.5., which applies to aisles in assembly occupancies in general, if certain measures are taken.
This is to limit the probability of:
  • excessive travel distances along seat rows to reach aisles in an emergency situation,
  • insufficient width of aisles to permit efficient egress in an emergency situation, and
  • steps in aisles.
This is to limit the probability of delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.
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