1. OS3


OS3 Safety in Use



Intent 1:

To exempt aisles in Group A, Division 4 occupancies from the requirements of Article, 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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