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9.23.11.1.(1)
ApplicationIntent
OS2OP2OH1OS3OH4OS1
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 wall plates, 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 9.23.11.1.(2), which applies to bottom plates:
  • where wall studs are located directly over framing members, or
  • in non-loadbearing walls.
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Intent
Intent 1: 
To limit the probability of an inability to resist expected gravity and lateral loads, which could lead to:
  • the inadequate distribution of vertical loads to and from studs, which could lead to the excessive deflection or failure of wall plates,
  • inadequate diaphragm action of plates, which could lead to the excessive deflection of walls, or
  • inadequate lateral support for the ends of studs.
Where walls support floors, this is to limit the probability of:
  • the excessive deformation of floors, which could lead to compromised operation of doors required for egress in an emergency, and
  • excessive deflection or vibration of floors, which could lead to persons losing their balance, tripping or falling.
This is to limit the probability of harm to persons.
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