Intent 1:
To limit the probability of:
- concentrations of stress from horizontal loads acting
on ties that are vertically aligned, which could lead to cracking,
or
- inadequate embedment of ties in mortar.
This is to limit the probability of:
- buckling or tensile failure of the ties,
- an inadequate resistance to tensile or compressive loads,
- water ingress from rain or melting snow along ties,
which could lead to the corrosion or rotting of structural building
elements, or
- the exposure of ties to water, which could lead to the
corrosion of ties.
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.