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


OH1 Indoor Conditions



Intent 1:

To limit the probability that the block wall will be insufficiently stiff and strong at critical edges and openings, which could lead to an inability to resist transverse or vertical loads, which could lead to the cracking or displacement of foundation walls.

Where elements support or are part of an environmental separator, this is to limit the probability of:

  • condensation,
  • rainwater 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 temperatures 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 elements supported by foundations, 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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