Intent 1:
To limit the probability of:
- ice lens formation beneath the foundations of regularly
occupied buildings, which could lead to the displacement of foundation
elements, or
- the displacement of relatively massive concrete steps
due to frost.
For environmental separators or elements supporting an environmental
separator, this is to limit the probability that foundations will
crack, which could lead to:
- 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 foundation walls that act as
environmental separators or of elements supported by such walls, 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.