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RE: Foundation Jacks

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You are correct. Is is possible the the perimeter is underpinned?

eric green, PE

-----Original Message-----
From: richard lewis [mailto:rlewistx(--nospam--at)juno.com]
Sent: Wednesday, April 04, 2001 12:11 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: Foundation Jacks


I don't think it is the expansive clay.  I was there during a drought and
the perimeter walls were higher than the interior walls.  I would think
that during a drought it would be the other way around.

Enlighten me on other thoughts!

Rich


On Wed, 4 Apr 2001 08:03:50 -0700 Eric Green <egreen(--nospam--at)exponent.com>
writes:
> Depending on the timing, drainage and local weather conditions, you 
> may want
> to consider that the perimeter may be heaving as the expansive soils 
> wet. If
> so, raising the interior will not solve you problem as eventually 
> the
> perimeter will return to its normal m/c and move back down, leaving 
> the
> interior underpinned and high. Perimeter heave is relatively common 
> in Texas
> during the monsoon season. Perimeter drainage is key to prevention.
> 
> Eric green
> 
> -----Original Message-----
> From: richard lewis [mailto:rlewistx(--nospam--at)juno.com]
> Sent: Wednesday, April 04, 2001 9:32 AM
> To: seaint(--nospam--at)seaint.org
> Subject: Foundation Jacks
> 
> 
> If my memory is still good, which on some days I have to question, I 
> used
> to see adds in Aberdeen's Concrete Construction magazine for 
> foundation
> shoring.  I was a steel corkscrew type apparatus.  I no longer have
> access to those magazines.  Can somebody give me a lead on a web 
> page for
> a product like this.  Also, if anybody has some good or bad
> recommendations for using this product, I would appreciate hearing 
> those
> as well.
> 
> My application is a house located on expansive soil.  The walls are 
> 7
> inch thick stone, and it appears as though there is significant 
> movement
> of the interior walls, moving down.  The exterior walls are in 
> fairly
> good shape.  Only one wall has significant cracks, but quite a few 
> of the
> interior walls are cracked.  It makes me wonder also if poor soil
> compaction inside the building has caused settlement of the 
> interior
> walls.
> 
> Thanks for your help.
> 
> Rich
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