9.20.6.4.(1)

Objective

OP2 Structural Sufficiency of the Building

Attribution

[F20,F22-OP2.3]Applies to elements that are part of an environmental separator.

Intent

Intent 1:

To limit the probability of:

  • the veneer being unable to support its own weight or lateral loads,
  • insufficient bonding area between ties and mortar in loadbearing or non-loadbearing masonry cavity walls, which could lead to an inability to resist lateral, tensile and compressive loads, or
  • insufficient bond strength between masonry veneer units in loadbearing or non-loadbearing cavity walls, which could lead to an inability to resist tensile stresses due to lateral 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,
  • compromised operation of windows or doors, or
  • damage to the building.

Intent 2:

To exempt masonry veneer in which the units are not designed to provide vertical support to each other from the minimum thickness requirement of this Sentence.

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