Hello to the Group,
I got as far as actually having manufactured my guy anchors and then realized
that I was going to have MAJOR trouble getting all my guy wires to fit on my
property. I have read with interest the discussions concerning varying
distances from tower base to guy anchors, and I just didn't want to get into
all that with my set up.
So I got on Excel and developed a set of equations which fully describes the
guy lengths and angles based on an initial position of the first guy & assuming
that all other guys are spaced 120 degrees from the other.
What I came up with was still a little outside of the Rohn spec, but I wanted
to pose it to the group for comments. Essentially, for a 50 foot tower (my
tower height), Rohn does use the 80% rule with respect to the ratio of distance
from the base to height of the tower.
Basically, mine has been cut down to the 60% range. Just curious if others use
the 60% ratio and if that would be acceptable. I would be happy to say good
bye to my tower in 80mph winds, but I'd like it to stand up in 30 or 40 mph
gusts!!
Also, at what angle & tensions do I have to start worrying about actually
collapsing the tower due to excessively low ratios? What are my tradeoffs,
assuming I actually have my 120-degree spacing between anchors?
Thanks,
Jason
KB5URQ
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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