OH1 Indoor Conditions

To limit the probability that inappropriate load distribution assumptions 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.