Intent 1:
To limit the probability of ice lens formation beneath
foundations that are installed on fine-grained soils (which can retain
quite a bit of water), which could lead to the excessive vertical
movement of the soil, which could lead to excessive stress on foundations,
which could lead to structural damage to foundations and superstructures.
For foundation walls that act as environmental separators
or elements supported by such walls, this is to limit the probability
of:
- condensation,
- precipitation ingress,
- the ingress of moisture from the ground, or
- compromised thermal performance of components intended
to provide resistance to heat transfer.
This is to limit the probability of:
- an inadequate control of the temperature of interior
spaces, relative humidity, or water accumulation,
- the generation of pollutants from biological growth
or from materials that become unstable on wetting, or
- compromised integrity of environmental separators, which
could lead to the deterioration of building elements.
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.