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[TowerTalk] Crankup anchor bolt failure and pad reusal

To: <towertalk@contesting.com>
Subject: [TowerTalk] Crankup anchor bolt failure and pad reusal
From: satcom@lava.net (stuart Browne)
Date: Sun, 27 May 2001 09:30:03 -1000
Your pad is totally reusable. All you need is to "hammer drill" new holes for 
the new
tower and then using super concrete glue, install threaded rods at the 
appropriate size.
The deeper the drilled hole the better.  The concrete glue is stronger than the
concrete.

73's and Aloha,
Stu -- WH6H

Paul DeFelice wrote:

> I lost my US Tower TX455 this week. It had been up for 9 years and had a
> 4 element Lightening bolt quad (about 13 sq. ft) and a Big Boy PST61 on
> it. All is trashed except of the rotator. The bolt that failed appeared
> to have had some damage for some time. It snapped about 1 1/2" above the
> concrete pad and about 1/2 of thread into one of the nuts that is used
> to level the T mounting bracket. About 2/3 of the diameter was
> discolored. I guess the wind on Monday exerted just enough force on the
> remaining 1/3 of good "meat" to snap it. Fortunately, the tower fell in
> an open area of the back yard and no one was around. It could have been
> worse. Has anyone experienced this type of bolt failure?
>
> I'd also like to know if there is a safe method of installing new anchor
> bolts in to my existing pad. At this point, I plan to have the pad
> removed of bury it.
>
> Thanks,
> Paul K9NU
>
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List Sponsor: Are you thinking about installing a tower this summer? Call us
for information on our fabulous Trylon Titan self-supporting towers - up to
96-feet for less than $2000! at 888-833-3104 <A 
HREF="http://www.ChampionRadio.com";>
www.ChampionRadio.com</A>

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