"When it was up and all three guy sets were
>installed, one guy stood at the base looking up the tower while 3
>others adjusted the turnbuckles at the guy anchors to get it
>approximately straight and vertical. "
Would have been easier if the owl was mounted on top first....
73,
Jim N9WW
James E. Chaggaris
President
PowerOne Corp.
1020 Cedar Ave.
Suite 110
St. Charles, IL 60174
Phn:(630) 443-6500
Fax:(630) 443-6505
Cell:(630) 669-2241
Web: www.pwrone.com
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Pete Smith
Sent: Tuesday, January 22, 2008 3:35 PM
To: K7LXC@aol.com; towertalk@contesting.com
Subject: Re: [TowerTalk] Plumbing a tower
At 04:28 PM 1/22/2008, K7LXC@aol.com wrote:
>In a message dated 1/22/2008 6:56:43 A.M. Pacific Standard Time,
>towertalk-request@contesting.com writes:
> > When I put up my 97-foot Rohn 25 tower on a pier pin base (my first
> > and
>only experience of this kind), the experienced tower builders who were
>helping me said absolutely nothing about plumbing the tower with any
>kind of instrument. When it was up and all three guy sets were
>installed, one guy stood at the base looking up the tower while 3
>others adjusted the turnbuckles at the guy anchors to get it
>approximately straight and vertical. Once it looked OK, each one
>tightened his turnbuckle by the same number of turns until the guy
>tension (measured with a Loos Gauge) was correct.
>
> > I am wondering how important all this emphasis on precision really is?
>
> Well, the vertical tolerance spec per the TIA-222 is 3" per
> hundred feet. Some people are just more particular than others.
>
>Cheers,
>Steve K7LXC
>TOWER TECH
>
>
Frankly, specs like that strike me as implausible, or - perhaps worse -
intended to give the tower manufacturer an "out" in any failure. For
example, with Rohn 25, the guy spacing is approximately 30 feet, or 3
sections. I don't even see how you would go about getting a 3" bow out of
the run between guys.
73, Pete N4ZR
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