Sentence 9.20.3.1.(3)

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

Objective

OS1 Fire Safety

Attribution

[F21-OS1.2]Applies to assemblies required to provide fire resistance.

Intent

Intent 1:

To limit the probability of oxides in the lime being hydrated after mortar placement, which could lead to the expansion and cracking of mortar.

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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