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Journal of Structural Engineering / Volume 137 / Issue 12 / TECHNICAL PAPERS

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Storm and Gust Duration Effects on Design Wind Loads for Glass

J. Struct. Eng. 137, 1603 (2011); http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000397 (8 pages)

Eri Gavanski1 and Gregory A. Kopp, M.ASCE2

1Assistant Professor, Dept. of Architecture and Building Science, Graduate School of Engineering, Tohoku Univ., Sendai, Miyagi, Japan 980-8579; formerly, Postdoctoral Fellow, Boundary Layer Wind Tunnel Laboratory, Faculty of Engineering, Univ. of Western Ontario, London, ON, Canada, N6A 5B9 (corresponding author). E-mail: eri.gavanski@atchi.tohoku.ac.jp
2Professor and Canada Research Chair in Wind Engineering, Boundary Layer Wind Tunnel Laboratory, Faculty of Engineering, Univ. of Western Ontario, London, ON, Canada N6A 5B9. E-mail: gakopp@uwo.ca

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(Submitted 11 November 2010; accepted 16 February 2011; published online 15 November 2011)

Duration effects on the design wind loads for glass are examined with respect to ASCE 7-10. Pressure time histories are created by combining variations of wind speed and wind direction from a “design cyclone” with pressure coefficients obtained from wind tunnel tests of low-rise buildings. The results indicate that the assumption of a 3-s gust duration in ASCE 7-10 may underestimate appropriate values for design loads for glass, with the degree of underestimation varying, depending primarily on the probability of exceedence of the peak pressures. On the basis of these results, modifications to the peak pressures specified in ASCE 7-10 are suggested that maintain the time duration of 3-s, consistent with current glass-design provisions.

© 2011 American Society of Civil Engineers

Acknowledgments

The Institute for Catastrophic Loss Reduction and the Natural Sciences and Engineering Research Council of Canada provided funding for this research. E. Gavanski gratefully acknowledges scholarship support from Ministry of Education, Culture, Sports, Science and Technology of Japan. G. A. Kopp gratefully acknowledges the support provided by the Canada Research Chairs Program. The authors are particularly grateful to Dr. Joseph Minor for many helpful discussions and his ongoing interest.

Article Outline

  1. Introduction
  2. Appropriate Form of Load Resistance and Design Load for Glass Design
  3. Method of Analysis
    1. Overall Approach
    2. Design Cyclone
    3. Peak Design Wind Pressure, mathc
    4. Reference Time Duration of Equivalent Static Load, tref
  4. Analysis of Results
    1. Effects of Parameter Variations
    2. Effects of Duration
  5. Design Wind Loads for Glass
  6. Conclusions

KEYWORDS

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ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000397

PUBLICATION DATA

ISSN

0733-9445 (print)  
1943-541X (online)

Publisher

American Society of Civil Engineers

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