9.23.10.5.(1)

Objective

OS3 Safety in Use

Attribution

[F22-OS3.1]Applies to floors and elements that support floors.
[F22-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 of studs providing inadequate support and nailing surfaces for vertical edges of interior finishes, sheathing or cladding materials, which could lead to inadequate strength of wood-frame assemblies, which could lead to an inability to resist expected vertical or lateral loads.

This is to limit the probability of:

  • detachment or separation of interior finishes, sheathing or cladding from supporting members,
  • displacement of sheathing or cladding, or
  • inadequate racking resistance for exterior walls and lateral support of walls, where finishes, sheathing or cladding provide required racking or buckling resistance.

This is to limit the probability of:

  • compromised structural integrity,
  • where elements support or are part of an environmental separator, the failure of required environmental separation elements, which could lead to deterioration, or
  • an inability to resist expected loads, which could lead to:
    • the excessive deflection or vibration of floors, or
    • the excessive movement or deformation of walls.

This is to limit the probability of:

  • compromised operation of doors or windows required for egress in an emergency, and
  • persons losing their balance, tripping or falling.

This is to limit the probability of harm to persons.

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