In a message dated 5/4/2007 9:02:58 A.M. Pacific Daylight Time,
towertalk-request@contesting.com writes:
> I am trying to check the tension on my 100ft tower, which uses 3/8"
Polygon guy rod (guyed out at 100 ft). There is 5/16" EHS for the
last 15 feet or so.
> I can easily use the Loos gauge to measure the tension, but I do not
know what the correct tension should be for Polygon guy rod. I
believe I should be at 10% breaking strength, but I don't know what
that is off-hand. Probably this has been discussed before, but I
can't find it.
Well, by definition whatever the measurable EHS tension is is what the
Polygon tension is. What is the Ultimate Breaking Stength (UBS) of the Polygon?
While 5/16" guys are a little overkill for your hundred-footer, I'd guy
the tower to the 5/16" spec. UBS for 5/16" EHS is 11,200 pounds so your guy
tension should be 1100 pounds. This is assuming of course that it's a match to
the Polygon rod. If it's not, then I'd use the Polygon spec for the tension.
Cheers,
Steve K7LXC
TOWER TECH -
Professional tower services for hams
Cell: 206-890-4188
************************************** See what's free at http://www.aol.com.
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