Phil,
In general, tower guy tension is similar to sailboat rigging tension. I'm
not familiar with Polygon guys, but I'd advise you to pre-tension the guys
to 10 percent of the weakest material used. Is Polygon an insulated
material..? If so, I'd guess that the 5/16 EHS is the stronger of the two
materials used, so tensioning to 10 percent of the max rating of the Polygon
would be the way to go. Be sure to tighten all of the guys, starting with
the lower sets, to the same tension in order to balance the load on the
tower.
73, Larry - W1GOR
----- Original Message -----
From: "Phil - KB9CRY" <kb9cry@comcast.net>
To: <towertalk@contesting.com>
Sent: Wednesday, September 10, 2003 21:50
Subject: [TowerTalk] Guy Pre-Tension
> I've just put up 120 ft. of Rohn 45 with Polygon guys with about 10 ft.
> of 5/16 EHS at the ground ends.
> What pre-tension do you guys that have these type of guys tensioned to?
> We just tensioned them to feel tight and plumbed the tower. I've got a
> Loos gauge on order so I can be quantitative.
> Tnx in advance, Phil KB9CRY
>
> _______________________________________________
>
> 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.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
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.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|