9.23.14.3.(1)

Objective

OS1 Fire Safety

Attribution

[F20,F22-OS1.2]Applies to assemblies required to provide fire resistance.

Intent

Intent 1:

To limit the probability of:

  • inadequate support for roof joists and rafters, which could lead to an inability to resist expected gravity loads, which could lead to crushing, or
  • insufficient area for fastening, which could lead to an inability to resist expected lateral or wind-uplift loads, which could lead to the separation of roofs from walls.

Where assemblies are required to provide fire resistance, this is to limit the probability of compromised fire resistance of the assembly, which could lead to harm to persons.

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