1. OS2
  2. OP2
  3. OH1
  4. OH4
  5. OS3
  6. OS1
  7. OS2
  8. OP2
  9. OH1
  10. OS3
  11. OS2
  12. OP2
  13. OS3


OH1 Indoor Conditions



Intent 1:

To limit the probability of:

  • insufficient compressive strength to resist expected gravity loads, or
  • the excessive shrinkage, cracking and premature failure of concrete.

Where concrete is used in an environmental separator, this is to limit the probability of:

  • the compromised integrity of the environmental separation elements, or
  • an inadequate resistance to air and moisture transfer through the concrete.

This is to limit the probability of:

  • pollutant ingress (from the exterior, including soil gas)
  • condensation,
  • the ingress of moisture from the ground, or
  • the compromised thermal performance of components intended to provide resistance to heat transfer.

This is to limit the probability of:

  • the generation of pollutants from biological growth or from materials that become unstable on wetting,
  • deterioration, which could lead to further compromised integrity of environmental separators, or
  • an inadequate control of indoor air and surface temperatures, drafts, relative humidity, or water accumulation.

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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