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9.27.9.1.(1)
ApplicationIntent
OH1OS2OP2
ObjectiveOP2 Structural Sufficiency of the Building
Attribution
[F20-OP2.1,OP2.3,OP2.4] [F22-OP2.3,OP2.4,OP2.5] Applies where panel-type cladding is installed to provide the required bracing.
Application
Application 1: 
Plywood installed as cladding, on buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability that the performance of plywood will fall significantly below expectations, which could lead to:
  • premature failure of plywood cladding, or
  • where panel-type siding is installed as bracing to satisfy Subclause 9.23.10.2.(2)(b)(i), an inability to resist lateral loads, which could lead to racking of exterior walls.
This is to limit the probability of:
  • the deformation of the building, or
  • 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 compromised structural integrity of exterior walls or elements protected by exterior walls, or
    • falling cladding components.
This is to limit the probability of:
  • the space being unsuitable for its intended use,
  • compromised operation of windows and doors, or
  • damage to the building.
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