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## [TowerTalk] Unequal guy tensions

 To: [TowerTalk] Unequal guy tensions alsopb@gloryroad.net (alsopb) Tue, 24 Aug 1999 21:15:59 +0000
 ```Guys, I saw it again. "The tension in the guys will be equal if the tower is vertical and stationary." This is absolutely true only in Kansas, Dorothy--i.e. when the guys are all anchored on level ground. It comes from the fact that the sum of the horizontal forces of the guys must be zero for the tower to be stationary. I decided to do some calculations on a 70' Rohn tower with one guy level with the base on the tower, one two foot below it, and one two foot above it. (enter SIN, COS and TAN from high school trig) Bottom line: Tension in nominal guy 400#, tension in other two guys are 7 pounds above and 7 pounds below 400#. You would never see this difference on a gauge. The statement about equal tension is close enough. However, if the guy elevation differences are severe, expect differences in guy tensions. Tensioning them all to the same amount in this case will result in a tower departing from vertical. By the way, these 6 guys put a downward force of 1500# on the tower. Those considering heavier guys (hence higher guy tensions) ought to consider the impact. Doubling guy tension will double downward force. Do you really want to do that? 73 de Brian/K3KO -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com Search: http://www.contesting.com/km9p/search.htm ```
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