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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>
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JOE PATRICK
SENIOR PLUMBING/MECHANICAL
INSPECTOR CITY OF BOYNTON BEACH
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