1. OH1
  2. OS2
  3. OP2
  4. OH2
  5. OS3


OH1 Indoor Conditions



Intent 1:

To limit the probability of excessive soil settlement beneath foundation footings, which could lead to:

  • structural damage to foundations or damage to foundations' moisture-control elements, or
  • where settlement occurs at water-service locations, the rupture of water lines, which could lead to leakage and undermining of the foundation, which could lead to the structural failure of foundations and superstructures.

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
  • deterioration, which could lead to compromised integrity of environmental separators.

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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