Codes and Standards
In Canada truss design is regulated by the provincial or territorial
Trusses for houses and small buildings or Part 9 structures in Canada are designed in accordance with
design procedures from TPIC "Truss Design Procedures and
Specifications for Light Metal Plate Connected
Wood Trusses" as per the National Building Code section 188.8.131.52.
Trusses for commercial or industrial buildings are governed by the requirements of Part 4 of the
are designed in accordance with CSA O86-01 which references the truss plate testing standard
CSA S347 Method of Test for Evaluation of Truss Plates Used in Lumber Joints.
Trusses for agricultural buildings are also designed in accordance with Part 4 of the National Building Code
and CSA O86-01.In some provinces some
modifications for agricultural type structures are based on the
Canadian Farm Building Code
where it is accepted.
More information on truss design procedures can be found at: