I installed a used UST a few years back. The calcs were done to an obsolete
UBC so I had to get them redone by an engineer. I don't recall the context
now, but while we were discussing the installation he told me a cylindrical
foundation would be equivalent to a square hole foundation (assuming
diameter = to L & W dimensions). I think he even included that comment in
the foundation drawing. That's the way I installed it. Took the driller
about 15 minutes to go seven feet once he had the rig set up in place.
73 - JC, k0hps@amsat.org
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com]On Behalf Of R. Kevin Stover
Sent: Monday, July 11, 2005 3:00 PM
To: Kelly Johnson
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Pad and Pier Foundations
Kelly Johnson wrote:
> The "drilling rigs" mentioned as of late are all designed to dig a
> round hole, not a square one. Every tower foundation spec I've seen
> (USTower, Trylon, AN Wireless) specs a square hole. There are lots of
> building inspectors that won't accept a round hole when a square one
> is called out in the manufacturer specs.
>
> It would seem to me that these tower manufacturers need to realize
> that the specs they are creating can't be realized very easily by most
> amateurs.
>
Heights Towers spec a round hole for their bases.
They use 4' diameter "Sonna" tubes as forms with appropriate rebar cage.
Why can't Trylon, AN Wireless, or UST?
--
R. Kevin Stover ACØH
K2/100 #4684
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Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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