Investigating a wind tunnel method for determining wind-induced loads on roofing tiles

Smith, Daniel J., Masters, Forrest J., and Chowdhury, Arindam G. (2016) Investigating a wind tunnel method for determining wind-induced loads on roofing tiles. Journal of Wind Engineering and Industrial Aerodynamics, 155. pp. 47-59.

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Abstract

Current design loads for roofing tile systems in the U.S. are determined based on a standardized wind tunnel testing method developed in the 1990s to examine wind-induced pressures on the upper and lower surfaces of the tile. The method neglects several key parameters that are well known to affect wind loading (e.g. wind angle, specimen shape, etc.). The research objective of this study is to investigate this method by [1] characterizing wind-induced surface pressure distributions on field tiles for varying wind angles of attack and [2] measuring load path intensity through mechanically fastened tile attachments. Surface pressure distributions were measured on three full-size, rapid prototyped roofing tile models with 256 pressure taps immersed in wind flows. The models are geometrically identical to low-, medium- and high-profile concrete roofing tiles that are widely used in high wind areas. Additionally, their real counterparts were instrumented with load cells to measure reaction forces at mechanical fasteners. The results highlight areas of the method that are lacking in specificity and shows that low-resolution pressure measurement may yield conservative parameters for low- and medium-profile tiles but is potentially not conservative for asymmetric (s-shaped) high-profile tiles.

Item ID: 45847
Item Type: Article (Research - C1)
ISSN: 1872-8197
Keywords: roofing tiles; roof damage; Florida building code; international building code; residential buildings; surface pressure measurements; wind loading
Funders: Florida Building Commission (FBC), Florida Department of Emergency Management (FDEM), International Hurricane Research Center - Florida International University (IHRC-FIU)
Date Deposited: 25 Sep 2016 22:37
FoR Codes: 12 BUILT ENVIRONMENT AND DESIGN > 1204 Engineering Design > 120402 Engineering Design Knowledge @ 50%
09 ENGINEERING > 0905 Civil Engineering > 090506 Structural Engineering @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970112 Expanding Knowledge in Built Environment and Design @ 100%
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