Sentence 9.15.5.2.(1)

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

Objective

OH1 Indoor Conditions

Attribution

[F20-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 of:

  • an inadequate resistance to concentrated loads imposed by beams, which could lead to the compressive failure of masonry units, which could lead to the structural failure of the masonry [see corresponding requirement in Sentence¬†9.20.8.4.(2)], or
  • an excessively narrow contact area between beams and hollow masonry, which could lead to wood fibres being crushed, which could lead to the structural failure of beams.

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 or beams, 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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