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FW: Dynamic Wind Effects[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaoc '" <seaoc(--nospam--at)seaoc.org>
- Subject: FW: Dynamic Wind Effects
- From: "Sprague, Harold O." <SpragueHO(--nospam--at)bv.com>
- Date: Fri, 15 Aug 1997 10:51:00 -0500
Brian, Check out the references in "Tubular Steel Structures Theory and Design" by Troitsky published by Lincoln Welding p 5-51 thru 5-53 and on p 6-47. ASME STS-1-1992, "Steel Stacks" TIA/EIA-222-F "Structural Standards for Steel Antenna Towers and Antenna Supporting Structures" "Wind Effects on Structures" by Simiu and Scanlan There are several references in "Designing for Wind Effects - The ESDU Wind Engineering" Abstracts". There is also the commentary in the ASCE 7-95. Take care when using the literature in regard to extreme wind velocities. As of 1995 the standard for the U.S. is a "peak gust or 3 second gust" which has been the standard for the National Weather Service for years. Prior to 1995 the structural engineering community used the "fastest mile" wind. The World Meteorologic Organization typically uses the "10 minute mean". Also look at the probabilities. They are not always the same. Occasionally they will use 50 years, but may have different exceedance percentages which will result in different mean recurrence intervals. It is not easy to compare apples to apples. Regards, Harold Sprague Black & Veatch ---------- From: BVeit(--nospam--at)aol.com To: seaoc(--nospam--at)seaoc.org Subject: Dynamic Wind Effects Date: Wednesday, August 13, 1997 7:33PM I'm looking for info on dynamic effects (von karman) on tall slender structures (120' flag poles, transmission towers, etc.) Any references? Thanks, Brian Veit, P.E.
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