9.20.13.8.(1)

Objective

OS2 Structural Safety

Attribution

Intent

Intent 1:

To limit the probability of inadequate provision for drainage, which could lead to water pooling in cavities or air spaces for extended periods.

This is to limit the probability of:

  • the deterioration of masonry due to freeze-thaw stresses, which could lead to masonry falling, or
  • the deterioration of elements inboard of the masonry, 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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