[AT] Concrete Slip Forms

[charlie hill]

George,  about 25 years ago I worked as an engineering tech for the chief
engineer on a large industrial construction project.  The chief engineer was
an older guy who had worked construction jobs all his life.  He worked on
some of the big dams out west.  I can't remember which one but one of them
is built of cast in place concrete.   Charlie (the engineer) told me that
they hauled the cement/stone/sand mixture onto the dam in big (terex type)
dump trucks where it was spread in layers, then water trucks sprayed water
on it and rollers compacted it.

I'd like to find out more about it but I just can't remember which dam it
was any longer.

Charlie
----- Original Message ----- 
From: "George Willer" <gwill at toast.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Friday, August 13, 2004 10:35 PM
Subject: Re: [AT] Concrete Slip Forms


> Ted,
>
> Some of the old missions in the southwest were slip formed, as were some
of
> the earlier Indian structures.  Of course the material was abobe rather
than
> concrete.  This saved the step of casting the bricks and then plastering
> over them.  It was much like casting bricks in place.  I think, but am not
> sure that Casa Grande, north of Tucson is an example.
>
> George Willer
>
> ----- Original Message ----- 
> From: <TCHARPE at aol.com>
> To: <at at lists.antique-tractor.com>
> Sent: Friday, August 13, 2004 8:14 PM
> Subject: [AT] Concrete Slip Forms
>
>
> > The first time I saw this "continuous pour" method used was back in the
> > middle  30's
> > when OLd Fort Mills, in Marion OH was poured using the slip forms.  It
was
> a
> > double
> > row of grain silos.... 8 all together, I think.   This is now known as
> > Central Soya Corp.
> > that may have changed by now).  You know how they keep changing names.
> >
> > They had a couple of men walking around the top as they poured working
the
> > screw
> >  jacks to pull the form up.  They poured 24 hours a day for many days
> before
> > they
> > finished.  Had rows of lights around the top that could be seen for
miles
> at
> > night.
> >
> > This was the talk of the town at that time.   I was only 6 or 8 then.
> >
> > Ted Harper
> > _______________________________________________
> > AT mailing list
> > http://www.antique-tractor.com/mailman/listinfo/at
> >
>
>
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