[TowerTalk] Unconventional Tower Installation

[Kurt Andress]

"Curtis, David B" wrote:
> 
> Hi Kurt,
>    In the case of a tower with two+ sets of guys going to the same anchor,
> the trig doesn't work out simultaneously for all sets of guys. What governs
> in that case?  My guess would be to go with "equal or flatter" vertical
> angles.
> 
> 73, Dave N6NZ
> 

Hi Dave,
In this case, you can't even get that for all guys. The lower uphill
guys will have larger angles between the tower and guy, and the downhill
ones will have smaller angles.
The only way to preserve the original configuration would be to use
separate anchors, and even that gets goofy on the downhill side. And
even at that, the thing will not really be the same as the guy lengths
will be different resulting in elongations under load than the original
configuration.

If it was the typical top loaded amateur tower with all the toys at the
top, and the deviations from the original are not great, you could
probably get away with setting the anchors for the top guys and living
with what that does to the lower ones.

With lower side mounted antennas it could be a problem. The unequal guy
angles are going to result in different guy reactions, different lateral
tower displacements and different compression loads put into the tower.

It's stepping outside the box and and into the unknown until some one
analyzes it, which is the best way to find out what to do.


-- 
73, Kurt, K7NV

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