Collapsible corrugated paper form void

Details Collapsible corrugated paper form void Collapsible corrugated paper form void

E - Fixed Constructions

04

G

E04G 11/06 (2006.01) E04G 9/08 (2006.01) E04G 9/10 (2006.01)

Patent

CA 2231707

A form void for providing a space between a poured concrete structure and an underlying expansive soil is formed of three sheets of corrugated paper for shipping in a flat "knock-down" configuration and is erected at the construction site simply by inserting one panel into a groove between two other panels. The upper surface is comprised of three panel thicknesses, and the outer support panels are reinforced by a pair of internal support panels. The cross-sectional shape may be trapezoidal, rectangular, symmetric or non-symmetric, or have a sloped top.

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