Sentence 9.12.3.1.(1)

  1. OS2
  2. OP2
  3. OH1
  4. OH4
  5. OS3

Objective

OH1 Indoor Conditions

Attribution

[F81-OH1.1,OH1.2,OH1.3]Applies to elements that support or are part of an environmental separator.

Intent

Intent 1:

To limit the probability that improperly placed backfill will lead to:

  • damage to the foundation's moisture-control elements,
  • the cracking of foundation walls, or
  • damage to externally-applied thermal insulation.

For environmental separators or elements supporting an environmental separator, this is to limit the probability of:

  • pollutant ingress from the exterior or from adjacent interior spaces, including soil gas, combustion products from parking garages, or particulates,
  • 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 the foundation or of elements supported or protected by the foundation, 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.

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