If my trig is correct, the guy wire post that is 44 feet from the tower base
would need to be 95 feet tall...not an option I think!
The net effect of moving the guy wire post nearer the base of the tower is
to put more and more stress on the tower legs. The legs are engineered to
take a fixed amount of downward thrust but nothing like what is being
suggested.
It sounds to me like you have enough room for guys that support a smaller
tower, say 55 feet. (44'/.8=55 feet)
Bill W5VX
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Robert West
Sent: Thursday, April 08, 2010 11:20 AM
To: 'Tower and HF antenna construction topics.'
Subject: Re: [TowerTalk] Rohn 25G Tower Help
If he raised the anchors, since he has such a small footprint, causing the
guys to be at a more shallow angle, would that be a real option? If so, how
high should the anchors be raised?
Bob-
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Cqtestk4xs@aol.com
Sent: Thursday, April 08, 2010 12:15 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Rohn 25G Tower Help
In a message dated 4/8/2010 4:07:39 PM Greenwich Standard Time,
Chuck@shelbybb.com writes:
The tower is 150' Rohn 25G. The guy anchors are placed at 51', 51', and
44' from the base (can't be any more because of the lot). Rohn used to
have a PDF document going over the requirements for anchors, guy wires,
etc. for different guy anchor positions. I cannot find this document,
and all I can find is the standard one with the standard 120' anchor
placement from the base. Do any of you have any recommendations or
documentation on how to figure out the correct materials to be used to
support this tower? Moving the guy anchor positions out is not an
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I'm glad you're climbing it and not me. The correct guy postion is about
80% from the base, or around 120 feet. The tower is an accident waiting to
happen in a strong wind. I imagine it is "exciting" to climb. Guys
should be 3/16 EHS. My guess is it only has four guy points at most, and
was
not erected by a tower company
Complete info can be found on the Rohn site.
Bill KH7XS
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|