[TowerTalk] Guy Anchor Failure

[James White]

my personal experience is that if it is above ground at least I can be
certain by visual inspection of what the condition of the un-concreted part
is...there isn't that nagging doubt that comes from seeing metal routinely
in contact with wet earth! - also you tend not to mow too closely when
things "stick up"

cu

K4OJ


----- Original Message -----
From: "Gary McDuffie, Sr." <mcduffie@actcom.net>
To: <towertalk@contesting.com>
Sent: Wednesday, January 03, 2001 12:03 AM
Subject: Re: [TowerTalk] Guy Anchor Failure


> On Tue, 2 Jan 2001 08:26:39 -0600, n4kg@juno.com wrote:
>
> > Are you suggesting that the concrete be filled to above ground?
> >
> > Most (concrete) anchor designs in the Rohn catalog show them
> > buried underground to obtain the additional holding power of the
> > earth.  The concrete block provides a large surface area for the
> > earth to adhere to.  The unprotected shaft has the same exposure
> > to the earth above as a screw anchor shaft.
>
> I was tempted to bring this up when I first saw where the discussion was
> going.  Why is it that Rohn calls for buried anchors with shaft coming
> up through the earth, when we routinely inspect to be sure that the
> steel is FULLY out of the ground on commercial installations?  The
> concrete must protrude from the ground, protecting the steel from being
> exposed to continuous moisture of the earth.  If not, we have to dig out
> around the anchors.  Blow dirt fills in around them with time.  Buried
> anchors of this type are T shaped, with the top of the T deep in the
> ground, and the bottom angled out with steel connecting rod.  If you
> want pictures, I can provide them.
>
> Gary
>
> ag0n at arrl dot net
> http://mcduffie.ws
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