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9.16.3.3.(1)
OH1OS2OS3
ObjectiveOH1 Indoor Conditions
Attribution
Application
Application 1: 
Sloping of floors supported on ground or on granular fill which do not provide structural support for the superstructure, where floor drains are required, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] and where the floor:
  • is a basement floor of a dwelling unit and drainage by gravity to a sewer, ditch or drywell is possible, or
  • is in a garbage room, incinerator room or boiler room that serves more than one dwelling unit.
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Intent
Intent 1: 
To limit the probability of water ponding on floors.
This to limit the probability of:
  • building elements coming into contact with water,
  • the compromised thermal performance of components intended to provide resistance to heat transfer.
This is to limit the probability of:
  • an 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 elements protected by floors-on-ground.
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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