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9.23.10.3.(1)
ApplicationIntent
OS2OP2OH1OH4OS1OS3
ObjectiveOS2 Structural Safety
Attribution
[F20-OS2.1,OS2.5]
[F22-OS2.5]
[F20,F22-OS2.3] Applies to elements that support or are part of an environmental separator.
Application
Application 1: 
Orientation of wall studs, in wood-frame constructions to which Section 9.23. applies [see Sentence 9.23.1.1.(1) for application of Section 9.23.].
Exceptions: 
except as stated in:
  • Sentence 9.23.10.3.(2), which applies to studs in gable ends of roofs that contain only unfinished space and studs in non-loadbearing interior walls where the studs comply with Table 9.23.10.1., and
  • Sentence 9.23.10.3.(3), which applies to studs that support only a load from an attic not accessible by a stairway where the studs are clad with structural panels and the portion of the roof supported by the studs does not exceed 2.1 m in width.
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Intent
Intent 1: 
To limit the probability that stud orientation that is inconsistent with the slenderness-ratio assumptions upon which stud size, height and spacing are based will lead to an inability to resist expected gravity and lateral loads.
This is to limit the probability of compromised structural integrity, which could lead to:
  • the 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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