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9.23.7.1.(1)
OS2OP2OH1OH4OS3OS1
ObjectiveOS1 Fire Safety
Attribution
[F22-OS1.2] Applies to assemblies required to provide fire resistance.
Application
Application 1: 
Minimum dimensions of sill plates supporting floors, 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:
  • inadequate bearing length for the supported framing,
  • inadequate bending strength, or
  • inadequate thickness.
This is to limit the probability of an inability to resist expected gravity, lateral and wind-uplift loads, which could lead to:
  • crushing of sill plates,
  • failure of sill plates, or
  • pull-through or inadequate penetration of fasteners, which could lead to failure of connections.
This is to limit the probability of inadequate support for or anchorage of floor assemblies.
Where assemblies are required to provide fire resistance, this is to limit the probability of compromised fire resistance of the assembly, which could lead to harm to persons.
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