Intent 1:
To limit the probability of insufficient contact
area between mortar and masonry veneer, which could lead to:
- the wall being unable to support its own weight or lateral
loads,
- insufficient bonding area between ties and mortar, or
- insufficient bond strength between masonry units.
Where masonry units support or are
part of an environmental separator, this is to limit the probability
of excessive moisture transfer through masonry units, which could
lead to:
- precipitation ingress, or
- compromised thermal performance of components intended
to resist heat transfer.
This is to limit the probability of:
- an inadequate control of temperatures of interior spaces,
drafts, relative humidity or water accumulation,
- the generation of pollutants from biological growth
or from materials that become unstable on wetting, or
- deterioration, which could lead to further compromised
integrity of environmental separators.
This is to limit the probability of:
- negative effects on the air quality of indoor spaces,
- the inadequate thermal comfort of persons, and
- contact with moisture.
This is to limit the probability of harm to persons.