9.23.17.2.(1)

Objective

OH1 Indoor Conditions

Attribution

Intent

Intent 1:

To limit the probability of an inadequate thickness or inappropriate specifications or rating of wall sheathing, which could lead to:

  • an inadequate fastening base for cladding,
  • inadequate support for required cladding and elements of an environmental separator, or
  • an inability to resist expected lateral or gravity loads, where sheathing provides the required resistance to racking and buckling.

This is to limit the probability of:

  • falling cladding,
  • the deformation or displacement of cladding, or
  • the excessive deflection of the wall.

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

  • condensation,
  • precipitation ingress,
  • excessive heat transfer,
  • pollutant ingress, or
  • compromised thermal performance of components intended to resist heat transfer.

This is to limit the probability of:

  • an inadequate control of temperatures of interior spaces, drafts, 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 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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