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4.2.3.2.(1)
OS2OP2
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Protection against deterioration of wood components exposed to soil or air above the lowest anticipated groundwater table. This applies to buildings described in Sentence 1.3.3.2.(1) of Division A and buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A] that are required to be designed to the requirements of Part 4.
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Intent
Intent 1: 
To limit the probability that wood components exposed to damp environmental conditions will not be protected against fungal decay during the design life of the building, which could lead to their premature deterioration, which could lead to structural failure, which could lead to harm to persons.
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