Sentence 9.27.5.3.(2)

  1. OH1
  2. OS2

Objective

OS2 Structural Safety

Attribution

[F20-OS2.1,OS2.3,OS2.4][F22-OS2.3,OS2.4,OS2.5]Applies where furring is used for the attachment of panel-type cladding installed to provide the required bracing.

Intent

Intent 1:

To limit the probability of inadequate anchorage for fasteners to resist:

  • gravity loads and lateral wind loads, or
  • where panel-type siding is installed as bracing to satisfy Subclause 9.23.13.1.(2)(a)(i) and Clause 9.23.13.6.(1)(a), lateral loads, which could lead to racking of exterior walls.

This is to limit the probability of the displacement of cladding, trim and flashing, opening of joints or failure of caulking, which could lead to:

  • precipitation or meltwater ingress, which could lead to deterioration, which could lead to the structural failure of exterior walls or elements protected by exterior walls, or
  • falling cladding components.

This is to limit the probability of harm to persons.

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