Intent 1:
To limit the probability of an excessively high
height-to-thickness ratio, which could lead to an inadequate resistance
to expected wind loads.
This is to limit the probability
of cracking of masonry or mortar, which could lead to excessive moisture
transfer, 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 in 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.