9.20.3.1.(4)

Objective

OS2 Structural Safety

Attribution

[F21-OS2.3]Applies to elements that support or are part of an environmental separator or are exposed to moisture.

Intent

Intent 1:

To limit the probability of oxides in the lime being hydrated after mortar placement, which could lead to the expansion and cracking of mortar.

This is to limit the probability of compromised structural integrity, which could lead to:

  • structural failure of masonry construction,
  • where masonry construction is part of an environmental separator, the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration, which could lead to further compromised structural integrity, 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.

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