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[Towertalk] Pouring base of tower

To: <towertalk@contesting.com>
Subject: [Towertalk] Pouring base of tower
From: hdmc38@bellsouth.net (hdmc38@bellsouth.net)
Date: Sun, 1 Dec 2002 11:45:24 -0500
I agree with steve.If the contractor doesn't know the answer then maybe you 
should check out some other contractor's.Never hurts to get some other prices.

         J PATRICK KG4VBR
> 
> From: K7LXC@aol.com
To: <towertalk@contesting.com>
> Date: 2002/12/01 Sun AM 11:04:12 EST
> To: wz7i@arrl.net,  towertalk@contesting.com
> Subject: Re: [Towertalk] Pouring base of tower
> 
> In a message dated 11/30/02 4:51:50 PM Pacific Standard Time, wz7i@arrl.net 
> writes:
> 
> > I am planning the installation of a self-supporting tower.  My contractor 
> >  asked me a question to which I don't know the answer.  Is there any reason 
> >  why he cannot pour the base in two pours as long as they are tied together 
> >  by the rebar cage?  The plans call for the foundation to be 9 x 9 at the 
> >  base and then 5 x 5 at the surface.  He would prefer to pour the 18" thick 
> >  9 x 9 foot section before the 5 x 5 foot section.  Any reason why not?
> 
>     It should be in one pour so that the base is totally bonded together. If 
> the bottom pour has 'gone off' and hardened, you wind up with two separate 
> layers. 
> 
>     Sometimes there are two pours if you have to have two trucks worth of 
> concrete but they are poured consecutively with little or no time delay. 
> 
>     Are you looking at something like a pedestal base where it's not a cubic 
> hole? Did you take the manufacturer's specs or have a PE design it? Sometimes 
> manufacturer's specs are pretty impractical (i.e. Trylon's undercut base, US 
> Tower's deep skinny holes) so it'd probably be easier if you could 
> reconfigure it for simplicity's sake. The problem is that the bases are 
> designed by engineers sitting in an office somewhere and they never have had 
> to install one of their (stupid) designs. 
> 
>     What kind of contractor wouldn't know the answer to your question?
> 
> Cheers,
> Steve    K7LXC
> TOWER TECH 
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JOE PATRICK
SENIOR PLUMBING/MECHANICAL
INSPECTOR CITY OF BOYNTON BEACH


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