Although it's a common practice with hams, Guys should be attached to a
bracket, not individual tower legs.
It's not normally a problem, but guy brackets like ROHN sells puts no
strain on an individual tower leg. On a heavily loaded tower,(near its
wind load limit), when the guys are attached to individual tower legs,
in high winds, the tower leg on the windward side takes the strain. With
a guy bracket encircles the tower with the guy strain taken by the
bracket and converted to a downward force, putting far less strain on
the tower.
You don't see commercial towers with the guy wrapped around a leg.
73, Roger (K8RI)
On 1/11/2017 11:27 AM, Steve London wrote:
K7LXC wrote:
Correcto mundo. In the years before the TIA-222, ham wisdom was that
the foot long or so torque arms were a necessary part of tower
construction.
Turns out that they really didn't do anything for tower torque but were
useful only by taking some of the twist out of the movement while being
climbed.
-----------------
In recent years, I have seen the suggestion that using the torque arms
eliminates the possibility that the guy wires could "chew" their way
through the tower bracing or legs. I could imagine this happening over
a period of years as the twisting of the tower causes abrasion of the
tower by the guy wire. I have never heard of this actually happening.
73,
Steve, N2IC
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73
Roger (K8RI)
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