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Pouring a floor

To: "Mark J. Andy" <marka@telerama.com>, shop-talk@autox.team.net
Subject: Pouring a floor
From: "Madurski, Ronald M" <ronald.m.madurski@lmco.com>
Date: Wed, 30 Jul 2003 09:54:07 -0400
I'm getting ready to pour a floor for a steel building.  40x50x12.
Frostline is 32".  I had a contractor lined up to do the whole thing and
he has flaked out on me so I am thinking about doing a lot of it by
myself with help from some friends.  

The original plan was for a 16" wide footer, 10" thick, with a few
courses of 8" block and then the floor poured on that.  

What I am thinking about doing now is form the footer, the short wall,
and the floor all at one time and just do one pour.  Are there any
problems with doing it this way?  (Other than the fact that it is a LOT
of concrete to pour at one time.)

My second alternative is to do the footer putting in a keyway.  Pour the
walls (8" thick) with another keyway, and then pour the floor.
Logistically this is a bit more difficult but the advantage that I see
is if a problem occurs less of the pour is affected.

I have a floor mason that will do the pour for me but he doesn't lay
block or pour footers.  

Another thing I was contemplating is welding the rebar together instead
of just tying it together.  Other than the time it would take to do it
are there any downsides to doing this?

Thanks,

Ron Madurski

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