Changes

*[https://www.astm.org/Standards/F2418.htm ASTM F2418-16a] “Standard Specification for Polypropylene (PP) Corrugated Wall Stormwater Collection Chambers”.  

*[https://www.astm.org/Standards/F2418.htm ASTM F2418-16a] “Standard Specification for Polypropylene (PP) Corrugated Wall Stormwater Collection Chambers”.  

Allowable loads for the chambers must be determined in accordance with [https://www.astm.org/Standards/F2787.htm ASTM F2787-13] “Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers”.

Allowable loads for the chambers must be determined in accordance with [https://www.astm.org/Standards/F2787.htm ASTM F2787-13] “Standard Practice for Structural Design of Thermoplastic Corrugated Wall Stormwater Collection Chambers”.

=====Concrete chambers=====

=====Concrete vaults=====

Chambers should be compliant with:  

Concrete vault-type systems should be compliant with:  

*[http://shop.csa.ca/en/canada/structures/a233-14/invt/27005072014 CSA A23.3-14] "Design of concrete structures",

*[http://shop.csa.ca/en/canada/structures/a233-14/invt/27005072014 CSA A23.3-14] "Design of concrete structures",

*[http://shop.csa.ca/en/canada/concrete/a231-09a232-09-r2014/invt/27012102009 CSA A23.1-09/A23.2-09 (R2014)] "Concrete materials and methods of concrete construction/Test methods and standard practices for concrete", and

*[http://shop.csa.ca/en/canada/concrete/a231-09a232-09-r2014/invt/27012102009 CSA A23.1-09/A23.2-09 (R2014)] "Concrete materials and methods of concrete construction/Test methods and standard practices for concrete", and

*[https://www.astm.org/Standards/C858.htm ASTM C858 - 10e1] "Standard Specification for Underground Precast Concrete Utility Structures".

*[https://www.astm.org/Standards/C858.htm ASTM C858 - 10e1] "Standard Specification for Underground Precast Concrete Utility Structures".