9.20.6.5.(1)

Objective

OS2 Structural Safety

Attribution

Intent

Intent 1:

To limit the probability of an excessively high height-to-thickness ratio, which could lead to an inadequate resistance to expected wind loads.

This is to limit the probability of:

  • cracking or toppling of parapets, or
  • cracking of masonry or mortar, which could lead to excessive water ingress into the parapet, which could lead to the deterioration of elements in or below the parapet, which could lead to compromised structural integrity, which could lead to structural collapse.

This is to limit the probability of harm to persons.

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