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RE: Proprietary concrete slab forming system?

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You might be looking at something like corrugated paper box forms that were placed on flat board forms and shores to construct a joist and slab structural system.  At one time they also used clay tiles in a similar manner.


In years past these products were marketed for a concrete structural joist and slab application.  Look at the waffle slab system at:  Today their market is in the area of slabs on grade with expansive soils. 

Harold O. Sprague


-----Original Message-----
From: Stuart, Matthew [mailto:mStuart(--nospam--at)]
Sent: Tuesday, September 30, 2003 11:39 AM
To: '
Subject: Proprietary concrete slab forming system?


Came across a formed, framed slab system supported by bar joisted spaced at about 2'-0" o.c. that I have not seen before.


Visually, the slab soffit looks very similar to the bottom of a wet cardboard box with a slight shadowing of  2" x 2" ± mesh behind. Slab soffit is hard to the touch. Slab thickness measures 4" thick, concrete.


Anybody seen this system before or am I just looking at a non-descript, removable forming system that just happened to be separated from the concrete via a layer of cardboard?


D. Matthew Stuart, P.E., S.E., P.Eng.

Senior Project Manager

Schoor DePalma Engineers and Consultants

Structural Department

200 State Highway Nine

Manalapan, NJ 07726

732-577-9000 (Ext. 1275)

908-309-8657 (Cell)

732 -431-9428 (Fax)