NO, NO, NO...
The channel then would be no stronger than the pipe, and maybe not
even that. And you would have set a pre-stressed bend giving a
collapse the place to start where you drew the metal in to form to the
pipe. This is akin to cutting a notch in the "seraph" parts of an
I-beam. If you bend the vertical AT ALL you weaken it. The whole point
of the horizontals is to fix the verticals in that U configuration, so
they CAN'T bend, just flex as a whole tower.
On all the vertical pieces the flat part begins at a tangent point of
a circle that describes 120 degrees of the circumference. Look at it
as 1/3 of a circle with tangential wings on either side that further
extend for a distance equal to the diameter of the circle. (It's
actually a slight bit less than 1/3 because the tower sides tilt
inward to go from 48 inches on a side to nine.)
What you specifically do NOT want to do is to change the shape of the
flat part. That shape is the source of its strength.
NO U-BOLTS, REALLY!!!
Call Trylon first, if anyone is the least bit tempted to U-bolt a
Trylon vertical piece around a pipe. Save yourself a catastrophe or
ruining your tower.
73, Guy.
(I have one of them in my back yard.)
----- Original Message -----
From: "Earl Dery" <ve7in-earl@shaw.ca>
To: <towertalk@contesting.com>
Sent: Monday, April 21, 2003 6:34 PM
Subject: Re: [TowerTalk] Side mount on Trylon Tower
> You can get around the Channel material problem by finding a piece
of pipe
> that will fit inside the channel nicely and clamp around the pipe
and the
> leg. This will prevent the channel from collapsing when you tighten
up the
> U-bolt.
>
> 73 Earl VE7IN
>
>
> _______________________________________________
>
> 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
|