9.25.2.4.(5)

Objective

OS2 Structural Safety

Attribution

Intent

Intent 1:

To limit the probability of:

  • inadequate thermal resistance, which could lead to excessively low temperatures of interior surfaces or within assemblies, which could lead to condensation, or
  • the transfer of absorbed moisture into the masonry, which could lead to deterioration due to freeze-thaw stresses.

This is to limit the probability of compromised structural integrity of assemblies acting as environmental separators, which could lead to harm to persons.

Intent 2:

To modify the application of Sentence 9.25.2.4.(1) to include masonry cavity walls.

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