Construction and Engineering

Origin: CSA
Close date: Aug 4, 2020
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The scope and requirements of this Standard are fully described in NIST PS 2, except as provided in these Canadian deviations, which add to, replace, or delete provisions in NIST PS 2. The nature of the deviation is indicated in brackets below the referenced clause number. Whereas CSA Group divides its Standards into “clauses”, NIST PS 2 uses the term “section”. The term “section” is accordingly used in these Canadian deviations. Added sections and tables are designated by adding the letter A, B, C, etc., to the applicable NIST PS 2 section or table number and follow the applicable NIST PS 2 section or table (e.g., Section 2.1A follows Section 2.1 but precedes Section 2.2). Added text other than entire sections and tables follows the last sentence in the referenced section.

Origin: CSA
Close date: Aug 8, 2020
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This Standard covers the following strategies to maintain permafrost or mitigate permafrost degradation related to existing buildings or structures:

a) site techniques that consist of

i) site grading and drainage;

ii)  snow management; and

               iii) shading or albedo change

b)  foundation techniques that consist of

i) ventilation;

ii) ground insulation;

iii) foundation adjustment and levelling

iv) mechanized refrigeration and thermosyphons; and

v) foundation replacement;

This Standard also allows for site abandonment or structure demolition in response to permafrost degradation.

Monitoring is an essential component of this Standard.