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RE: Expansive Foundation

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Adjebli, Chuck, & Milo:


Thank you for your response.




You indicated you used PT Slab.  I felt that 1500 psf uplift was high – just curious what uplift forces did you design your PT slabs for.




From: rowyz(--nospam--at) [mailto:rowyz(--nospam--at)]
Sent: Friday, October 12, 2007 7:40 PM
To: seaint(--nospam--at)
Subject: Re: Expansive Foundation


At a residential project I've used a PT slab on grade; design guides and handbooks are available at PTI.


Milo Z, PE  

----- Original Message ----
From: Gautam Manandhar <Gautam_Manandhar(--nospam--at)>
To: seaint(--nospam--at)
Sent: Friday, October 12, 2007 3:13:53 PM
Subject: Expansive Foundation


List members


I am working on a site that has expansive soil.   The soil report indicates the uplift force from the expansive soil to be 1500 psf.  The foundation consists of piers and grade beams.  I understand there is a compressible material that can be installed between the soil and the underside of the grade beam to reduce the overall uplift load.  Can anyone point me to web site regarding this material or provide specs on this material.





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