9.27.3.3.(1)

Objective

OH1 Indoor Conditions

Attribution

Intent

Intent 1:

To limit the probability of:

  • excessive air infiltration or “wind-washing,” which could lead to condensation, and
  • precipitation ingress.

This is to limit the probability of the failure of required environmental separation elements, which could lead to:

  • compromised thermal performance of components intended to resist heat transfer, which could lead to an inadequate control of the temperature of interior spaces or water accumulation,
  • the generation of pollutants from biological growth or from materials that become unstable on wetting, or
  • deterioration, which could lead to further 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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