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9.23.14.4.(1)
OS3OP2OH4
ObjectiveOS3 Safety in Use
Attribution
Application
Application 1: 
Orientation of plywood used as subflooring, 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 inappropriate orientation of or aligned joints in plywood subflooring, which could lead to inadequate strength between joists, which could lead to an inability to resist expected gravity loads, which could lead to:
  • the excessive deflection of subfloors, or
  • sagging or cracking of flexible or brittle finished floor between floor joists.
This is to limit the probability of an uneven walking surface, which could lead to persons tripping or falling, which could lead to harm to persons.
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