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9.23.16.2.(1)
ApplicationIntent
OS2OP2OH1OS1OH4OS3
ObjectiveOH4 Vibration and Deflection Limitation
Attribution
[F20,F22-OH4] Applies to floors and elements that support floors.
Application
Application 1: 
Wall sheathing in exterior walls, in wood-frame constructions to which Section 9.23. applies [see Sentence 9.23.1.1.(1) for application of Section 9.23.], where walls are not:
  • braced,
  • finished on the interior with plaster, gypsum board, plywood, hardboard, insulating fibreboard, particleboard, OSB, waferboard or tile according toSection 9.29., or
  • clad in panel-type cladding.
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Intent
Intent 1: 
To limit the probability of wall sheathing of inadequate thickness or inappropriate specifications or rating, which could lead to:
  • an inadequate fastening base for cladding,
  • inadequate support for required cladding and elements of an environmental separator, or
  • an inability to resist expected lateral or gravity loads, where sheathing provides the required resistance to racking and buckling.
This is to limit the probability of:
  • falling cladding,
  • the deformation or displacement of cladding, or
  • the excessive deflection of the wall.
For exterior floors or environmental separators supporting a floor, this is to limit the probability of the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration, which could lead to compromised structural integrity, which could lead to excessive movement, vibration or deflection, which could lead to negative effects on the psychological well-being of persons.
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