Jerry,
During the early 1990's, a 300 foot Rohn SSV tower was installed for the
Long Island Rail Road. The foundations were 3 footings, 3 feet in diameter,
and 20 feet deep in 3000 PSF soil. The auger was trucked to the site from
somewhere near Washington, DC. Why does Dave Giuliani's engineer require a
25 foot deep hole..? You're right... Something seems incorrect..!
73, Larry - W1GOR
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com]On Behalf Of Jerry Keller
Sent: Sunday, October 05, 2003 13:21
To: David Giuliani; towertalk@contesting.com
Subject: Re: [TowerTalk] The tower base is poured BUT...
OK, maybe my ignorance is showing, but does anyone else think it a bit
preposterous for an engineer to recommend digging a 25 foot deep hole for a
tower base? If the soil content would allow augering a 25 foot deep hole
only 2 feet in diameter, wouldn't it cave in long before it got that deep?
Are there even 2 foot diameter truck-mounted augers available 25 feet long?
There's something about this idea that just seems wrong... but then I'm no
engineer. Any thoughts? Jerry K3BZ
----- Original Message -----
From: David Giuliani
To: towertalk@contesting.com
Sent: Sunday, October 05, 2003 12:23 PM
Subject: RE: [TowerTalk] The tower base is poured BUT...
The more I read about this, the more I'm liking my emerging plan to dig a
hole with a truck mounted auger rig -- no forms, no backfilling,
relatively
small diameter surface. We're looking at a 2' diameter hole, 25' deep.
Relatively simple rebar for the lower 80%. Requires <3 cubic yards of
concrete. See "deep base for MA-550" for this thread.
David Giuliani, WA6PXX
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com]On Behalf Of K7LXC@aol.com
Sent: Sunday, October 05, 2003 6:46 AM
To: k1ttt@arrl.net; towertalk@contesting.com
Subject: Re: [TowerTalk] The tower base is poured BUT...
In a message dated 10/4/03 9:54:13 AM Pacific Daylight Time,
k1ttt@arrl.net
writes:
> Doesn't anyone use forms any more???
What for? I assume you mean below grade. The concrete is supposed to
be
poured into 'undisturbed' earth.
An exception would be when the walls keep sloughing; then the forms
would
be necessary but you have to be real careful to backfill after you remove
the
forms and tamp the backfilled dirt.
Cheers,
Steve K7LXC
TOWER TECH -
Professional tower services for commercial and amateur
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|