9.20.11.2.(3)

Objective

OS1 Fire Safety

Attribution

[F20,F80-OS1.2]Applies to assemblies required to provide fire resistance.

Intent

Intent 1:

To limit the probability of:

  • failure of the ties,
  • inadequate lateral load distribution, which could lead to failure of the connection between intersecting walls, or
  • inadequate bonding to mortar under lateral loads.

This is to limit the probability of an inability to transfer lateral loads from masonry walls to intersecting walls intended to provide lateral support, which could lead to inadequate lateral stiffness, which could lead to an inability to resist lateral loads or inadequate distribution of gravity loads, which could lead to cracking or buckling.

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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