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CSA S307

Revision 80M, 1980

Complete Document

Load Test Procedure for Wood Roof Trusses for Houses and Small Buildings

Includes all amendments and changes through Reaffirmation Notice , 2001

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Product Details:

  • Revision: Revision 80M, 1980
  • Published Date: January 2001
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: CSA Group (CSA)
  • Page Count: 28
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:


This Standard covers the load test procedure for evaluating the strength and deformation performance of wood roof trusses intended for use in housing and small buildings as defined in Part 9 of the National Building Code of Canada.

Note: Part 9 of the National Building Code of Canada provides detailed requirements for the construction of houses and small buildings up to 600 m² in building area and 3 storeys in building height and applies to all occupancies except assembly, institutional, and high-hazard industrial.

This Standard does not stipulate mandatory performance criteria (see Appendix A for acceptable performance criteria).

Intent of Test

This load test procedure is intended to evaluate the adequacy of wood roof truss designs and is not intended as a quality control test. The procedure may, however, be used for retesting production run samples in cases where the quality of the truss is in dispute.

Note: It is recognized that measures to ensure the quality of production of trusses must be maintained for on-going production of designs acceptable under this Standard.


Assemblies to be tested by this procedure are limited to:

(a) Triangulated trusses having a maximum span of 12 m; or

(b) Bowstring or lenticular trusses having a maximum span of 4.3 m;

whose members are connected using mechanical connectors or nailed gusset plates and which are intended to be installed at a maximum spacing of 600 mm on centres and in such a manner that the top chords are suitably sheathed or braced to prevent lateral buckling.

Note: Clause 2 has been renumbered A2 and has been relocated in Appendix A, page 18.