[TowerTalk] The tower base is poured BUT...

[W1GOR]

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 at contesting.com
[mailto:towertalk-bounces at contesting.com]On Behalf Of Jerry Keller
Sent: Sunday, October 05, 2003 13:21
To: David Giuliani; towertalk at 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 at 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 at contesting.com
  [mailto:towertalk-bounces at contesting.com]On Behalf Of K7LXC at aol.com
  Sent: Sunday, October 05, 2003 6:46 AM
  To: k1ttt at arrl.net; towertalk at 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 at 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
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  _______________________________________________

  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 at 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.

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TowerTalk mailing list
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