Intent 1:
To limit the probability that an excessive design
capacity of foundations will lead to soil subsidence, which could
lead to the cracking of foundations or building superstructures.
Where foundations support or are part of an environmental
separator, this is to limit the probability of:
- pollutant ingress (from the exterior or from adjacent
interior space, including soil gas, combustion products from parking
garages, and particulates),
- precipitation ingress,
- condensation, or
- moisture ingress from the ground.
This is to limit the probability of:
- an inadequate control of 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 compromised integrity
of elements supported by foundation walls.
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.