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About This Item


Full Description


This is the fourth edition of CSA G401, Corrugated steel pipe products. It supersedes the previous editions published in 2001, 1993, and 1981.

1 Scope


This Standard specifies material and fabrication requirements for corrugated steel pipe, spiral rib pipe, and structural plate corrugated steel pipe products.


This Standard applies to the use of corrugated steel pipe, spiral rib pipe, and structural plate corrugated steel pipe for applications such as culverts, storm sewers, sanitary sewers, subdrains, ground recharge systems, well casings, underpasses, stream enclosures, shelters, and tunnels.


This Standard does not include requirements for hydraulic design, service life, structural design, construction, and installation.


In CSA Standards, ""shall"" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; ""should"" is used to express a recommendation or that which is advised but not required; ""may"" is used to express an option or that which is permissible within the limits of the standard; and ""can"" is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.


Document History

  1. CAN/CSA G401:24

    Corrugated steel pipe and buried structures

    • Most Recent
  2. CAN/CSA G401-14 (R2019)

    Corrugated Steel Pipe Products

    • Historical Version
  3. CSA G401-07 (R2013)

    👀 currently

    Corrugated Steel Pipe Products, Includes Update No. 1 (2008)

    • Historical Version
  4. CSA G401-01 (R2006)

    Corrugated Steel Pipe Products

    • Historical Version