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5.7.1.1.(1)
ApplicationIntent
OH1OS2
ObjectiveOH1 Indoor Conditions
Attribution
[F60-OH1.1,OH1.2,OH1.3]
Application
Application 1: 
Building location, site grading, and installation of catch basins on the building site.
This applies to buildings to which Part 5 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 5].
Exceptions: 
except as stated in Sentence 5.7.1.1.(3), which applies to buildings specifically designed to accommodate the accumulation of water at the building or the ingress of water.
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Intent
Intent 1: 
To limit the probability of excessive moisture loading on assemblies, which could lead to:
  • surface water ingress, or
  • prolonged exposure of building materials to moisture.
This is to limit the probability of:
  • the inadequate control of 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 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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