Wind Uplift Model for Asphalt Shingles
Publication: Journal of Architectural Engineering
Volume 3, Issue 4
Abstract
Current standard test methods of ASTM and Underwriter's Laboratories for wind resistance of shingles subject a small test deck of shingles, that have been sealed under heated conditions, to a fan-induced airstream impinging at a continuous velocity of 97 km/h (60 mph) for 2 h. (ASTM D3161 and UL 997). Although these standard test methods have served a useful purpose in the past, it is generally accepted today that they are deficient in a number of respects. These deficiencies include the test deck not containing any protrusions or valleys, the shingles being sealed under “ideal” conditions, and turbulence of the impinging air stream not being taken into account. In order to improve shingle performance, a wind uplift prediction model was needed. A research program was initiated by ARMA to understand, quantitatively, the uplift mechanism and to develop a prediction methodology suitable for product development. This paper describes the research leading to a quantitative uplift model and presents the results of that research. The investigation included both wind-tunnel and full-scale tests. Uplift forces were found to be significantly lower than forces derived from cladding pressures specified by building codes and standards.
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References
1.
Cermak, J. E., Peterka, J. A., Derickson, R. G., and Cochran, L. S. (1991). “Prediction of wind-induced uplift of asphalt roofing shingles on low rise buildings, Year 1,”Rep. CER 91-92-5, Fluid Mech. and Wind Engrg. Program, Colorado State Univ., Fort Collins, Colo.
2.
Cermak, J. E., Peterka, J. A., and Hosoya, A. (1983). “Wind-tunnel study of wind pressures on roofing shingles.”Rep. CER 83-84-21, Fluid Mech. and Wind Engrg. Program, Colorado State Univ., Fort Collins, Colo.
3.
Cochran, L. S. (1992). “Wind-tunnel modelling of low-rise buildings,” PhD dissertation, Colorado State Univ., Fort Collins, Colo.
4.
Cochran, L. S., Peterka, J. A., and Cermak, J. E. (1995). “Wind-tunnel studies of shingles on a roof, Year 3.”Rep. CER 94-95-2, Fluid Mech. and Wind Engrg. Program, Colorado State Univ., Fort Collins, Colo.
5.
Derickson, R. G., Peterka, J. A., Cermak, J. E., and Cochran, L. S. (1993). “Wind-tunnel studies of shingles on a roof, Year 2.”Rep. CER 92-93-6, Fluid Mech. and Wind Engrg. Program, Colorado State Univ., Fort Collins, Colo.
6.
Kind, R. J., and Wardlaw, R. L. (1979). “Model studies of two loose-laid roof-insulation systems.”Rep. LTR-LA-234, Nat. Res. Council of Canada, Ottawa, Ontario.
7.
“Minimum design loads for buildings and other structures.” (1993). ASCE 7-93. ASCE, New York, N.Y.
8.
“Minimum design loads for buildings and other structures.” (1995). ASCE 7-95. ASCE, New York, N.Y.
9.
Nishiyama, and Bedard. (1991). Review of scientific instruments, Vol. 62, 2193–2204.
10.
The NRCA roofing and waterproofing manual. (1992). Third Ed., National Roofing Contractors Assoc., Rosemont, Ill.
11.
Peterka, J. A. (1995). “How to use the shingle wind load model.”Rep. 94-1124 Prepared for Asphalt Roofing Manufacturers Association, Cermak Peterka Petersen, Inc., Fort Collins, Colo.
12.
Peterka, J. A., Cochran, B. C., Hosoya, N., and Cermak, J. E. (1995). “Field study of wind uplift on asphalt shingles, Year 1.”Rep. 92-0815, Cermak Peterka Petersen, Inc., Fort Collins, Colo.
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Copyright © 1997 American Society of Civil Engineers.
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Published online: Dec 1, 1997
Published in print: Dec 1997
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