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Re: Vibro-replacement/stone column

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Stone columns are the common method for liquefaction prevention in
Richmond, BC, which is a city located below the water table. If your loads
aren't high I think it is very economical and quick. 

On Mon, 11 Dec 2000, Dan Goodrich wrote:

> Hello,
> I am reading a geotech report for a high school gym.  Masonry
> bearing walls, and steel joists.  The report estimates
> a liquefaction settlement of appox. 10 to 15 in.  The geotech
> recommends using a deep pile/pier system, or a
> ground improvement technique called vibro-replacement, or 
> stone columns.  The stone column idea appears to be a much 
> simpler approach as far as the building is concerned.
> Has anybody had experience with this?  Pros? Cons?
> Was it very expensive?
> TIA.
> Dan Goodrich, P.E.
> Karren & Associates
> 3707 North Canyon Rd. Suite 8H
> Provo, Utah 84604