At 10:14 PM 8/21/98 -0500, Lee wrote:
>
>Why no torque arms?
They don't do any good and are a waste of time and money.
>Also what do you mean by, "two top guys / anchor"? Do
>you mean double the top guys?
I mean put a spreader mount or a "star mount" which provides
two anchor points at the top of the tower for each guy anchor
point. The two anchor points are about twice the face width
of the tower apart and you have a two guys from each ground
anchor running to the "star mount" for a total of 6 guys at
a given level.
Look around at guyed microwave towers and I think you
will see what I mean. The microwave dishes have very
narrow beam widths, so the tower has to be very rigid in
torsion or they lose the link.
Towers are designed to large compressive loads. They
don't do well in torsion or bending, so you have to have the
guys keep them straight and keep them from twisting.
de n0yvy steve
--
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
|