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9.3.2.9.(3)
OS2OP2OH1OH4OS3OS1
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Pressure treatment of structural wood elements with a preservative, where the structural wood elements are:
  • less than 150 mm above ground, or
  • not protected from exposure to precipitation, where the configuration is conducive to moisture accumulation and the moisture index is greater that 1.0.
This applies to 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 wood decay.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural failure, or
  • where structural wood elements support or are used in an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements.
This is to limit the probability of harm to persons.
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