9.24.1.4.(1)

Objective

OS3 Safety in Use

Attribution

[F22,F80-OS3.7]Applies to walls, and elements that support walls, that contain doors or windows required for emergency egress.

Intent

Intent 1:

To limit the probability that the performance and physical properties of steel screws, with respect to withdrawal resistance, pull-through resistance or shear strength, will fall significantly below expectations, which could lead to an inability to resist expected lateral and gravity loads.

This is to limit the probability of the excessive movement or deformation of walls, which could lead to:

  • the structural failure of walls, or
  • for exterior walls, the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration.

This is to limit the probability of compromised operation of doors or windows required for egress in an emergency, 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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