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RE: Foam Over Underground Sewer

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I would suggest Void Form or
SureVoid  It is used to keep expansive soils from
pushing up on walls and structures between piles.  

Or you could just wood form and span over the top, and leave the wood form
in.  The foam products will put too much load on the sewer before crushing.

Harold Sprague

> -----Original Message-----
> From:	Blomberg, Paul [SMTP:Paul.Blomberg(--nospam--at)]
> Sent:	Thursday, May 04, 2000 8:18 AM
> To:	SEOC
> Subject:	Foam Over Underground Sewer
> I've got a project where I'm placing a new wall footing over a 36" storm
> sewer.  I want to place 2" of foam over the sewer to ensure the pipe isn't
> surcharged due to the new building wall/continuous footing.
> Does anyone have recommendations as to a type or specification of foam.
> Soil is sandy without a high water table.
> Paul F. Blomberg
> Phoenix, AZ