[TowerTalk] Guying a self-supporting tower - Yes

[Don Moman]

Just in cae I confused anyone with my reference to VE5RA, I was living in
the past.  I should have said VA5DX.....

----- Original Message -----
From: "Don Moman" <ve6jy at 3web.com>
To: <towertalk at contesting.com>
Sent: Sunday, April 10, 2005 16:25
Subject: Re: [TowerTalk] Guying a self-supporting tower - Yes


> Count me firmly in the side that approves of guying a self supporting
tower.
> And I can personally attest to VE5RA Doug's experience with guyed Delhi
> structures - he has been there and done it and they have survived.....
with
> significant loads such as 4 el 40m KLM's to well over 100 feet.  And in
> Canada what we refer to as the "Coke Bottle" style of Delhi (older stuff
> with stepped transitions) appears very similar to Rohn BX.
>
> Look at any Rohn tower book or spec - Rohn tower sections are self
> supporting to "X" feet.   Add guy wires and the structure is good to X
plus
> many more feet.
>
> Multiband verticals are designed to be self supporting but many
> manufacturers suggest guying to increase survivability.
>
> People truss or "guy" the elements of 80m yagis all the time.  Now there's
a
> long slender tapered structure.  Sensible guying will certainly help it
> survive.
>
> Yes, guying a self supporting structure will change both the stresses and
> eventually the mode of failure.  However any such failures will occur at
> higher - and I believe significantly higher - wind speeds.
>
> 73 Don
> VE6JY
>
> _______________________________________________
>
> 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 at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>