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9.23.3.5.(3)
ApplicationIntent
OS2OP2OH1OH4OS1OS3
ObjectiveOS2 Structural Safety
Attribution
[F20-OS2.1]
[F20,F22-OS2.5]
[F20,F22-OS2.3] Applies to elements that support or are part of an environmental separator.
Application
Application 1: 
Minimum shank and head diameter of roofing nails used to fasten fibreboard or gypsum sheathing to framing members, in wood-frame constructions to which Section 9.23. applies [see Sentence 9.23.1.1.(1) for application of Section 9.23.].
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Intent
Intent 1: 
To limit the probability of an inadequate nail diameter or head size, which could lead to inadequate capacity, rigidity or pull-through resistance, which could lead to an inability to resist expected lateral, gravity or wind-uplift loads.
This is to limit the probability of compromised structural integrity, which could lead to:
  • fastened elements detaching from supporting members, which could lead to elements falling from the building,
  • structural collapse of wood-frame construction, or
  • where wood-frame construction supports or is part of an environmental separator, the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration, which could lead to further compromised structural integrity.
This is to limit the probability of harm to persons.
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