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[TowerTalk] stacking antennas & Rohn specs

 To: [TowerTalk] stacking antennas & Rohn specs n4kg@juno.com (T. A. Russell) Sun, 13 Jul 1997 08:09:53 -0600
 ```Figuring Ultimate Tower Load I recall being told that the limiting factor in (Rohn) tower specifications is the ultimate load bearing capacity of the bottom section. (I think this came from a Rohn sales engineer but I am not sure of his qualifications.) IF this the case, then merely calculate the transposed load from the tower, antennas, and guy wires. This involves a LOT of computation but should not be too difficult. Remember, the guy wires transpose the horizontal load into vertical components born by the guy and the tower, and horizontal components born by the guy wires. To my mind, bending moments calculated by multiplying wind load and height are irrelevant. Just sum all the force vectors from each load (antenna and tower) and see what the worst case is at the bottom of the tower. de Tom N4KG -- 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 ```
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