Warning This information has been archived because it is outdated and no longer relevant.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

9.14.4.1.(1)
ApplicationIntent
OS2OP2OH1OS2OP2OH1OH4OS3
ObjectiveOS2 Structural Safety
Attribution
(b) [F21-OS2.1]
(b) [F21-OS2.3] Applies to elements that support or are part of an environmental separator.
Application
Application 1: 
Granular material that is laid down to drain the bottom of exterior foundation walls of buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
Exceptions: 
except for:
  • for the foundation walls of crawl spaces whose exterior walls have 25% or more of their total area above exterior ground level open to the outdoors [see Sentence 9.18.1.1.(1)] and where drainage can be shown to be unnecessary [see Sentences 9.18.5.1.(1) and (2)],
  • for foundation walls that are subject to continuous hydrostatic pressure,
  • as stated in Sentence 9.14.2.1.(1), which applies to foundation walls that are drained by drain tiles or pipes, and
  • for foundation walls that are effectively drained by the native soil or that have otherwise demonstrated that they do not require drainage.
Top of Page
Intent
Intent 1: 
To limit the probability that weathering of pyritic material will lead to excessive loading on foundation walls, under lateral soil pressure, with attendant structural damage to the foundation and superstructure.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural failure, or
  • for environmental separators or elements supporting environmental separators, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements.
This is to limit the probability of harm to persons.
Top of Page