Snow loads and strength of small roofs in Canada

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Journal titleForest Products Journal
Pages129136; # of pages: 8
SubjectRoofing; wood frame construction; snow loads; roof trusses; loading tests; Snow and Ice loads
AbstractThe structural performance of conventional joist-and-rafter and trussed roof frames was studied by full-scale loading tests. It was found that conventional roof frames built in earlier years had extremely variable load carrying capacities. Therefore improved nailing requirements were introduced in the National Building Code of Canada for conventional frames. For trusses new criteria for acceptable performance were formulated based on a comparison with the best conventional frames. These criteria are more liberal than would be the case under standard "engineering design" methods used in commercial and public buildings. Factors affecting the strength, stiffness and long-term performance of trusses are discussed. A number of standard designs for nailed trusses of commonly used spans and slopes are also given.
Publication date
PublisherForest Products Society
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number7938
NPARC number20375668
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Record identifier3a66cf85-6c53-4f8f-9e11-d0b7ed82b444
Record created2012-07-23
Record modified2016-05-09
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