Sentence 9.20.6.4.(1)

  1. OS2
  2. OP2
  3. OH1
  4. OS1

Objective

OS2 Structural Safety

Attribution

[F20,F22-OS2.3]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:

  • structural failure of masonry veneer, or
  • where masonry veneer is exposed to precipitation, the cracking of masonry or mortar, which could lead to excessive water ingress, which could lead to the deterioration of building elements, which could lead to compromised structural integrity.

This is to limit the probability of harm to persons.

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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