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## best tower direction in prevailing wind

 To: best tower direction in prevailing wind w5fl@flash.net (Wendell - W5FL) Fri, 14 Feb 1997 16:10:28 -0600
 ``` ---------- Jonathan, There can be as many guying configurations as you can think of. The = most used and cheapest is three guy anchors. The strongest resultant = force vector is in line with one of the anchors. The weakest point = (86%) is 30 degrees from any guy anchor. One of the advantages of 4 = anchors is that the weakest point occurs in line with one of the anchors = and the strongest (140%) is exactly between two of the four anchors. = Figure the vector sum of the forces to get the worst case (weakest) = direction, then you must always design for the weakest direction, = because the storm that gets your antenna will come from that direction. Up to 200 foot, I would much prefer to have the first 4 feet of tower = embedded in concrete. Lets moisture drain out the bottom of the legs = and provides a degree of self support when you stack the first sections = to the first set of guy wires. However: from an analysis point of view, = there is little difference. Either way you want your tower exactly = vertical. Wendell Wyly W5FL w5fl@flash.net ---------- * What is the best direction to face a guyed tower * in an area with strong prevailing winds from one * particular direction ?=20 *=20 * Should one leg of the tower face the wind, * allowing one guy to take the load, or should a * flat face point windward allowing two wires to * share the load ? =20 * Does it make a difference whether the tower base * is embedded or on a pier pin ? -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: K7LXC@contesting.com Sponsored by Akorn Access, Inc & N4VJ / K4AAA ```
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