Sentence 9.20.4.2.(1)

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

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 mortar joints at either interior or exterior faces of hollow masonry units, which could lead to inadequate tensile and compressive strength of mortar joints.

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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