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


OS1 Fire Safety


[F80-OS1.2]Applies to assemblies required to provide fire resistance.


Intent 1:

To limit the probability of:

  • excessively rapid corrosion, which could lead to the excessive deflection or structural failure of lintels, or
  • the accumulation of corrosion by-products between lintels and masonry, which could lead to compressive stresses.

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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