Loads due to drifted snow

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Journal titleJournal of the Structural Division, ASCE
Pages19161925; # of pages: 10
SubjectRoofing; snow loads; snow drifts; roofs; building codes; air flow; roof loading; snow drifting modelling; accumulation; Snow and Ice loads; Couvertures; charge de neige; congere; toiture; code du batiment; ecoulement de l'air
AbstractRoof failures due to snow loads are often the result of heavy drifts rather than uniform snow loads. Codes and standards such as Standard A58.1 of the American National Standards Institute (ANSI) and the National Building Code of Canada contain procedures for estimating snow loads on basic structures only. An understanding of elementary fluid mechanics and snow accumulation phenomena allows a designer to predict regions of potentially heavy snow loading in situations not covered by the codes. Several basic principles are presented and illustrated by examples of air flow around commonly shaped structures and the regions of snow accumulation. Modelling of snow drifting supplies qualitative information on snow accumulation in complex situations; advantages and limitations are examined.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number20983
NPARC number20375532
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Record identifier2b78c3da-1283-4255-87a6-87168d13271c
Record created2012-07-23
Record modified2016-05-09
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