Towertalk
[Top] [All Lists]

[TowerTalk] guy rod angle

 To: [TowerTalk] guy rod angle b_bradfield@yahoo.com (Brad Bradfield) Fri, 7 Sep 2001 09:19:22 -0700 (PDT)
 ``` --- David Jordan wrote: > ...and what happens to those numbers when the wind starts blowing at > 50 mph? > Let me tell you, my Statics professor (Is that old fossil still alive??) would be proud that I even remember as much of what he taught me as I've already told you. We're really digging into the dark ages now. IF you could assume that the base of your guyed tower was not fixed in position, but instead was allowed to slide frictionlessly in the horizontal plane, and assuming that the wind was 50 MPH at all points along the total height of the tower, then the increase in guy tension due to the wind would be basically equal in all three guys because the tower would deflect horizontally an equal distance along it's height. BUT, since the base of your tower IS fixed to one degree or another (set in concrete, single pin, etc), the horizontal deflection of the tower will be more at the top than it is at the bottom, so the increase in guy tension will be somewhat more in the upper set of guys than it is in the lower set. Being a tweek and not a structural engineer, my guess is that this difference in guy tension will still not be a very significant bearing on the overall problem. Actually, I'd gladly give you some real numbers on this, but I ran out of sufficient significant digits on my 5 inch Castell slide rule to complete the calculation. I really keep the slide rule and a 4X500 on my desk so young puke engineers can say "Wow! What are those?" Then I can proceed to impress them with my vast and limitless knowledge of the inane and arcane. 73, Brad, W5CGH __________________________________________________ Do You Yahoo!? Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems, Trylon Titan towers, coax, hardline and more. Also check out our self supporting towers up to 96 feet for under \$1500!! http://www.anwireless.com ----- FAQ on WWW: http://www.contesting.com/FAQ/towertalk Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com ```
 Current Thread [TowerTalk] guy rod angle, David O Hachadorian [TowerTalk] guy rod angle, Mike Rauh [TowerTalk] guy rod angle, Stan or Patricia Griffiths [TowerTalk] guy rod angle, J. Kincade [TowerTalk] guy rod angle, Michael Rauh [TowerTalk] guy rod angle, Stan or Patricia Griffiths [TowerTalk] guy rod angle, N0TT@ juno.com [TowerTalk] guy rod angle, Brad Bradfield [TowerTalk] guy rod angle, David Jordan [TowerTalk] guy rod angle, Brad Bradfield <= [TowerTalk] guy rod angle, Wilf Barby [TowerTalk] guy rod angle, Bob Nielsen [TowerTalk] guy rod angle, Brad Bradfield [TowerTalk] guy rod angle, Stan or Patricia Griffiths [TowerTalk] guy rod angle, J. Kincade [TowerTalk] guy rod angle, N0TT@ juno.com [TowerTalk] guy rod angle, n4kg@juno.com [TowerTalk] guy rod angle, Mike Gilmer - N2MG [TowerTalk] guy rod angle, Tim Totten, N4GN [TowerTalk] guy rod angle, Mike Gilmer - N2MG