I would not put more on a tower than Rohn's wind load ratings allow
just because a torque guy is used. A 6 way star guy does a great job
of minimizing twisting. There is more leg compression since there are
more guys wires however a Rohn 45 is designed to go 300' high and the
tower in the post is only 110'. I believe that twisting can cause
tower failure, K4JA's tower twisted back and forth in hurricane winds
until it failed. Adding a star guy is probably a good thing if the
antenna has a long boom. I use star guys and a taper pier pin base on
all of my towers.
John KK9A
k7lxc wrote:
I had one of these on the top guy set of my 110' R45 tower. And
I had torque arms on the lower two guy sets.
My question is aside from twisting, does this change any of the
wind loading numbers?
My suspicion is the double guy sets per face can only help but I
have never seen it quantified.
Since the capacity of a tower is determined by the leg strength,
I'd say that the use of a star guy bracket doesn't really do anything
to change it. I'm not an engineer so I don't have any calcs to provide.
Cheers,Steve K7LXCTOWER TECH
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