Back9.18.6.1.(2)

ATTRIBUTION:

Functional Statement:

F61

To resist the ingress of precipitation, water or moisture from the exterior or from the ground.

Objective:

OH1.1, OH1.2

 

APPLICATION:

Joints in sheet-type ground cover in unheated crawl spaces whose exterior walls have less than 25% of their total area above exterior ground level open to the outdoors, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability of discontinuity in the ground cover, which could lead to:
  • the ingress of moisture that is not under hydrostatic pressure from the ground, or
  • the ingress of moisture that is not under hydrostatic pressure from the ground, which could lead to 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 or relative humidity,
  • 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 or of elements protected by the separators.
This is to limit the probability of:
  • negative effects on the air quality of indoor spaces, and
  • the inadequate thermal comfort of persons.
This is to limit the probability of harm to persons.

ATTRIBUTION:

Functional Statement:

F61

To resist the ingress of precipitation, water or moisture from the exterior or from the ground.

Objective:

OS2.3

 

APPLICATION:

Joints in sheet-type ground cover in unheated crawl spaces whose exterior walls have less than 25% of their total area above exterior ground level open to the outdoors, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability of discontinuity in the ground cover, which could lead to the ingress of moisture that is not under hydrostatic pressure from the ground.
This is to limit the probability of deterioration, which could lead to compromised structural integrity of building components, which could lead to harm to persons.