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9.23.14.4.(2)
OS3OP2OH4
ObjectiveOS3 Safety in Use
Attribution
Application
Application 1: 
Orientation and alignment of OSB qualifying as construction sheathing, O-1 and O-2 grade OSB, and R-1 grade waferboard 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 or alignment of joints in OSB and waferboard subflooring, which could lead to insufficient 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 flooring 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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