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9.13.3.6.(1)
OH1OS2
ObjectiveOH1 Indoor Conditions
Attribution
Application
Application 1: 
Membrane waterproofing for basement floors-on-ground that are subject to hydrostatic pressure, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability of discontinuity, and inadequate structural support and protection for water-resistant materials, which could lead to:
  • the ingress of moisture from the ground, including water that is under hydrostatic pressure, or
  • compromised thermal performance of components intended to provide resistance to heat transfer.
This is to limit the probability of:
  • an inadequate control of the temperature of interior spaces, relative humidity, or water ingress and accumulation, or
  • deterioration, which could lead to compromised integrity of floors-on-ground or of elements protected by the floors-on-ground.
This is to limit the probability of:
  • the inadequate thermal comfort of persons, and
  • contact with moisture.
This is to limit the probability of harm to persons.
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