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9.23.7.1.(1)
ApplicationIntent
OS2OP2OH1OH4OS3OS1
ObjectiveOS3 Safety in Use
Attribution
[F22-OS3.1] Applies to floors and elements that support floors.
[F22-OS3.7] Applies to walls, and elements that support walls, that contain doors or windows required for emergency egress.
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.
This is to limit the probability of:
  • compromised structural integrity,
  • where elements support or are part of an environmental separator, the failure of required environmental separation elements, which could lead to deterioration, or
  • an inability to resist expected loads, which could lead to:
    • the excessive deflection or vibration of floors, or
    • the excessive movement or deformation of walls.
This is to limit the probability of:
  • compromised operation of doors or windows required for egress in an emergency, and
  • persons losing their balance, tripping or falling.
This is to limit the probability of harm to persons.
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