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9.20.2.3.(1)
ApplicationIntent
OS2OP2OH1OH4OS3OS1OP1
ObjectiveOP2 Structural Sufficiency of the Building
Attribution
[F20-OP2.1,OP2.4]
[F20-OP2.3] Applies to elements that support or are part of an environmental separator or are exposed to moisture.
Application
Application 1: 
Glass blocks used in 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 an inability to resist gravity, lateral or impact loads.
This is to limit the probability of:
  • compromised structural integrity of masonry construction,
  • where masonry construction is part of an environmental separator, the displacement or failure of required environmental separation elements, which could lead to deterioration,
  • in assemblies exposed to moisture or the exterior, damage and deterioration, or
  • an inability to resist expected loads, which could lead to:
    • the excessive movement or deformation of walls, or
    • the excessive deflection or vibration of floors.
This is to limit the probability of:
  • the space being unsuitable for its intended use, or
  • damage to the building.
Intent 2: 
Where masonry is used in fireplaces or chimneys, to limit the probability of an inability to withstand high temperatures, which could lead to cracking, which could lead to structural failure, which could lead to damage to the building.
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