Sentence 9.20.4.2.(3)

  1. OS2
  2. OP2
  3. OH1
  4. OH4
  5. OS3
  6. OS1

Objective

OS1 Fire Safety

Attribution

[F20-OS1.2]Applies to assemblies required to provide fire resistance.

Intent

Intent 1:

To limit the probability of discontinuity in the head and bed mortar joints of solid masonry units, which could lead to mortar joints of inadequate tensile and compressive strength.

Where masonry construction is required to provide fire resistance, this is to limit the probability of compromised fire resistance of the assembly, which could lead to harm to persons.

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