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9.20.2.3.(1)
OS2OP2OH1OH4OS3OS1OP1
ObjectiveOS2 Structural Safety
Attribution
[F20-OS2.3] 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, which could lead to:
  • structural failure of masonry construction, or
  • in assemblies exposed to moisture or the exterior, damage and deterioration, which could lead to further compromised structural integrity.
This is to limit the probability of harm to persons.
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 harm to persons.
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