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Wind Effects on Loose-Laid Cladding Systems

by R. J. Kind, Carleton Univ, Canada,
R. L. Wardlaw, Carleton Univ, Canada,
M. G. Savage, Carleton Univ, Canada,



Document Type: Proceeding Paper

Part of: Structural Design, Analysis and Testing

Abstract:

Modern roofing systems for flat roofs frequently make use of rigid insulation boards, gravel and concrete pavers that are loose-laid on top of the waterproof membrane. The authors have conducted experiments on such systems in the National Research Council of Canada 9m ? 9m Low Speed Wind Tunnel over a period of many years. The paper reviews the mechanisms by which failure can occur in high winds. Examples of stone scour and paver lifting are presented. Design considerations are discussed in the light of the failure mechanisms, and design methods are reviewed. The main objective of the paper is to give practicing engineers a better appreciation of wind effects on roof cladding systems.

Subject Headings: Roofs | Failure analysis | Cladding | Wind tunnel | Wind pressure | Structural design | Gravels | Canada

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