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Re: Sulfate bearing soil

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1.  What is the coating?
2.  How do you maintain the coating on the pile during driving?
3.  Would cathodic protection be appropriate?
4.  Why not use a different type (Cast   Reinforced Concrete) pile?
5.  What is the aversion to Type V?  It is the unstated standard here.

Pat Quinn
Henderson, Nevada

----- Original Message -----
From: Michael Donoghue <cmd(--nospam--at)ibm.net>
To: <seaint(--nospam--at)seaint.org>
Sent: Thursday, July 01, 1999 7:15 PM
Subject: Re: Sulfate bearing soil


> Mr. Cohen,
>
> I would assume the chemistry is due to leachate from the debris you
> mentioned.  Removing local soils would seem to be at best a temporary fix.
> How do you see it?
>
> I had a similar problem driving H-pile through an ash dump at a site
> Missouri a few years back.  The best thing we could come up with is
coating
> the piles.
>
> cmd
>
>
> ----- Original Message -----
> From: JCohen <jccpc(--nospam--at)email.msn.com>
> To: <seaint(--nospam--at)seaint.org>
> Sent: Thursday, July 01, 1999 1:42 PM
> Subject: Sulfate bearing soil
>
>
> > I recently had a soils test done for a propsective residence. The
sulfate
> > content came out at between .15 and .20 % by weight of soil, excpet for
1
> of
> > 9 samples which tested at 3.7%. I have asked the testing laboratory to
> > confirm their results, as this was also sampled within 3 feet above and
> > below other samples which tested at between the .15 and .20 %. The pH
was
> > also down on this single sample to 3.5, whereas the other samples were
> > around 5.1 to 6.5. My question is: would it be enough to remove high
> sulfate
> > content  locally from around the foundation without resorting to Type V
> > cement with added pozzolans? Are there other methods to avoid sulfate or
> > acid attack? If the test results are correct, and I hav enot reason to
> > believe they are wrong, it also appears that the sulfate is not
migrating.
> >
> > For information, there was a significant amount of debris found in the
> trial
> > pits at 8 to 12 feet below the surface. The site was a former horse
track
> > with a pond, which was filled in. The locations of the track and pond
are
> > not known, but are likely to be in the vicinity of the pits. Safe
bearing
> > capacity has been estimated at 4500 psf.
> >
> > Thanks for any suggestions.
> >
> > James Cohen
> > James Cohen Consulting, P.C.
> > Website: http://expertpages.com/~jccpc
> >
> >
> >