Application of Lab Procedures for the Dynamic Evaluation of Roofing Systems. Part 1: Review of Existing Standards

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TypeTechnical Report
Series titleInternal Report, Institute for Research in Construction, National Research Council Canada; Issue 692
Physical description26 p.
AbstractWind induced effects on roofing systems are dynamic because of the wind's variations with respect totime and space. Experiments were conducted at NRC/IRC on roofing materials . The data reported in"Evaluation of Roof Fasteners Under Dynamic Wind Loading - Baskaran and Dutt (1995)'; clearlyindicated that the fastener failure load and mode differ significantly under dynamic testing as compared tostatic testing. To develop a lab evaluation protocol for the roofing system, existing test procedures weresystematically reviewed. The review includes: the standard lab test methods currently being practiced inNorth America, such as the Factory Mutual (FM 4470) and Underwriters Lab (UL 580) procedures as wellseveral international test procedures used by the roofing community. It has been concluded that theexisting North American test methods are insufficient for evaluating roofing systems since they do notconsider the effects of dynamic wind loading. In Europe, fatigue has been acknowledged as an importantfactor in the evaluation of mechanically attached roofing systems. Thus the European test methods aremore realistic than those adopted in North America.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number5766
NPARC number20375279
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Record identifierc35c88cc-ec32-462f-8ef6-a930209a4606
Record created2012-07-23
Record modified2016-10-03
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