Warning This information has been archived because it is outdated and no longer relevant.

Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats on the "Contact Us" page.

9.20.11.2.(3)
ApplicationIntent
OS1OS2OP2OH1OH4OS3
ObjectiveOS1 Fire Safety
Attribution
[F20,F80-OS1.2] Applies to assemblies required to provide fire resistance.
Application
Application 1: 
Material, size, spacing and shape of ties for transverse masonry walls providing lateral support to above-ground masonry walls, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9]:
  • not exceeding 11 m in height above the foundation wall, and
  • in which the roof or floor system above the first storey is not of concrete construction.
Exceptions: 
except as stated in Sentence 9.20.1.1.(2), which applies to buildings other than described above, or where the masonry is designed for specified loads on the basis of ultimate and serviceability limit states.
Top of Page
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.
Top of Page