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9.29.2.1.(1)
OH1OS2OS1OP2
ObjectiveOP2 Structural Sufficiency of the Building
Attribution
Application
Application 1: 
Minimum height of waterproof walls of shower stalls and around bathtubs, in 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 of exposure of moisture-vulnerable interior finishes to water, which could lead to the ingress of water into wall assemblies.
This is to limit the probability of the deterioration of interior finishes, which could lead to studs being unable to resist expected impact, gravity or lateral loads, which could lead to:
  • where interior finishes contribute to the required bracing or lateral support for studs, the buckling or racking of walls, which could lead to structural failure, or
  • where interior finishes support or provide the substrate for required environmental separation elements, the excessive deformation, displacement or failure of such elements, which could lead to further deterioration, which could lead to further compromised structural integrity.
This is to limit the probability of:
  • the space being unsuitable for its intended use,
  • compromised operation of doors or windows, or
  • damage to the building.
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