Warning This information has been archived because it is outdated and no longer relevant.

Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats on the "Contact Us" page.

5.1.4.1.(3)
ApplicationIntent
+OS2OH1
ObjectiveOH1 Indoor Conditions
Attribution
[F20,F21,F22-OH1.1,OH1.2,OH1.3]
Application
Application 1: 
Design for resistance to deterioration and structural loads such as:
  • the structural loads identified in Part 4,
  • air pressure loads imposed on air barrier systems,
  • wind up-lift imposed on roofing, and
  • hydrostatic pressure imposed on protection from moisture in the ground.
This applies to building materials, components, assemblies and their interfaces described in Sentence 5.1.2.1.(1) that are installed in 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 Clause 5.1.4.1.(4)(b), which applies to the installation of common materials, components and assemblies with a proven past performance over several years.
Top of Page
Intent
Intent 1: 
To limit the probability that important loads will not be adequately addressed in the design of environmental separators, which could lead to an inadequate resistance to expected structural loads, which could lead to:
  • deflection, or
  • damage and deterioration.
This is to limit the probability of:
  • air infiltration and exfiltration,
  • condensation,
  • precipitation ingress,
  • moisture ingress from the ground, or
  • pollutant ingress, including soil gas, combustion products from parking garages, or particulates.
This is to limit the probability of:
  • the inadequate control of temperatures of interior spaces, drafts, 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 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 limit the probability of harm to persons.
Top of Page