Definition of Wind Profiles in ASCE 7
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Volume 128, Issue 8
Abstract
One of the major changes in the recent versions of ASCE 7 concerns the introduction of three-second gust as the reference wind speed. The three-second gust speed is derived using Durst’s model in terms of the mean wind speed and turbulence intensity given in the former versions of ASCE 7. A review of these profiles suggests a notable inconsistency in the embedded relationship among the wind profiles in ASCE 7-98, which is also apparent when these are compared to the profiles in major international codes and standards. To overcome this inconsistency in the definition of wind profiles, this paper proposes a modified turbulence intensity profile and suggests retaining the current mean wind and gust speed profiles. This modification not only ensures consistency in the definition of wind profiles in ASCE 7-98, but also renders the definition of these profiles consistent with those in major international codes and standards.
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References
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Published In
Journal of Structural Engineering
Volume 128 • Issue 8 • August 2002
Pages: 1082 - 1086
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Jan 9, 2001
Accepted: Dec 19, 2001
Published online: Jul 15, 2002
Published in print: Aug 2002
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