Sentence 9.27.3.5.(2)

  1. OS2
  2. OH1

Objective

OH1 Indoor Conditions

Attribution

Intent

Intent 1:

To limit the probability of inadequate clamping or tear resistance at overlapped joints, which could lead to an inability to resist expected wind loads, which could lead to damage to the membrane, which could lead to:

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

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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