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9.25.2.4.(4)
ApplicationIntent
OS2OH1+OS2OH1OP2OP3OS3OH4OS2OH1
ObjectiveOP2 Structural Sufficiency of the Building
Attribution
(c) [F81-OP2.1,OP2.3,OP2.4,OP2.5] Applies where the interior finish provides to the required bracing.
Application
Application 1: 
Installation of blown-in insulation in wood-frame walls separating heated space from unheated space or the exterior, in new buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability of:
  • inadequate fastening of or damage to the interior finish,
  • inadequate protection of the insulation, air barrier system or vapour barrier, which could lead to condensation, or
  • where the interior finish contributes to the required bracing, the inadequate performance of the interior finish, which could lead to an inability to resist expected lateral loads, which could lead to excessive racking.
This is to limit the probability of:
  • interior finishes becoming detached and falling,
  • compromised structural integrity, or
  • the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration, which could lead to further compromised structural integrity.
This is to limit the probability of damage to the building.
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