1. OS1
  2. OP1


OS1 Fire Safety



Intent 1:

To exclude from the fire separation requirements of Sentence, the plane surrounding an open space between storeys if certain design conditions are met and measures are taken [as described in Articles to] to:

  • provide adequate evacuation times,
  • control fuel load and fire spread, and
  • provide tenable conditions along exit routes and during evacuation and emergency response operations.

This is to limit the probability of harm to persons during a building fire.

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