Unless you have very poor soil, one usually pours "neat'. That is there are
no forms below grade. The excavtion is the form below grade. There is only
a form for above grade cap on the foundation. Make sure the concrete
passes a suitable sump test and the squishing is not a problem.
Ken - W5KQ ex K5GUU
----- Original Message -----
From: "JC Smith" <jc-smith@comcast.net>
To: "'William Q Meeker'" <wqmeeker@iastate.edu>; <towertalk@contesting.com>
Sent: Friday, June 30, 2006 10:53 AM
Subject: Re: [TowerTalk] new AN-Wireless tower, floundaion question
> Bill,
>
> Labor isn't too much of an issue, we are doing it ourselves. I definitely
> want the 5x5 vs. 9x9 pad in the yard when we are done. I prefer a single
> pour too, but how did they keep the concrete from "squishing" out the
> bottom
> and up the outside of the forms?
>
> Thanks,
> JC
>
>
>
> -----Original Message-----
> From: William Q Meeker [mailto:wqmeeker@iastate.edu]
> Sent: Friday, June 30, 2006 8:42 AM
> To: towertalk@contesting.com
> Cc: jc-smith@comcast.net
> Subject: [TowerTalk] new AN-Wireless tower, floundaion question
>
>
>>
>
>
> JC:
>
> I put up and HD-70 with a pad and pillar foundation last year. I had
> the foundation done by the same firm that did the concrete for our
> new house. They dug the 9x9x5 hole then built the rebar cage to
> specs, and then built forms for the pillar. The next day, it was all
> done in one pour (the concrete people asked if it could be done in
> two pours, but I recall phoning Dan Simmonds and he recommended it be
> done in one). Pictures are at
>
> http://www.anwireless.com/ia1.html
>
> The first person I talked to suggested that the difference in cost
> between the pad and pillar and the 9x9x5 block would be small with
> the tradeoff between building the forms versus the extra concrete.
> The foreman for the crew who actually did the work told me, however,
> that the pad and pilliar option was more expensive because labor cost
> more than concrete for that project. But my wife liked the smaller
> footprint of the pad and pillar.
>
> Good luck!
>
> 73,
>
> Bill
> K0KT
>
>
>>Date: Fri, 30 Jun 2006 06:42:39 -0700
>>From: "JC Smith" <jc-smith@comcast.net>
>>Subject: [TowerTalk] new AN-Wireless tower, floundaion question
>>To: <towertalk@contesting.com>
>>Message-ID: <00f601c69c4b$0e875bf0$6400a8c0@hpzd7000>
>>Content-Type: text/plain; charset="us-ascii"
>>
>>Hello All,
>>
>>As mentioned previously I am stick-building (like a giant erector set) a
> new
>>AN-Wireless HD-80. I will be posting photos at:
>>http://s14.photobucket.com/albums/a317/k0hps/Tower%20Project/
>>if anyone cares to watch it go up and the antenna stack go on it. We just
>>started digging the foundation yesterday. It's a pad and pier foundation
>>(like an inverted tee) with a 9'x9'x1.5' pad and a 5'x5'x3.5' pier.
>>
>>Has anyone on here ever dug one of these by digging the 5'x5' hole first
> and
>>then undercutting the bottom to create the pad? If so, I'd sure
>>appreciate
>>hearing how you did the digging for the undercut. We got the 5'x5' hole
>>no
>>problem but our experiments (so far) with the undercutting haven't been
> very
>>successful. We are in clay soil, fortunately with no rocks. If things
>>don't go better today we will probably dig out the entire 9'x9' hole, pour
>>the pad, form the pier and backfill around it.
>>
>>Suggestions appreciated.
>>
>>73 - JC, K0HPS
>>
>
>
> William Q. Meeker
> Department of Statistics
> 304C Snedecor Hall
> Iowa State University
> Ames, Iowa 50011
> Phone: 515-294-5336
> Fax: 515-294-4040
> Home Fax: 515-232-1323
> www.public.iastate.edu/~wqmeeker
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
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>
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