Elongated bendable drainage mat

E - Fixed Constructions – 02 – B

Patent

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91/11, 238/2, 61

E02B 11/00 (2006.01) E01B 1/00 (2006.01) E01C 11/22 (2006.01) E01C 13/08 (2006.01) E01C 13/10 (2006.01) E01F 5/00 (2006.01)

Patent

CA 1223128

ELONGATED BENDABLE DRAINAGE MAT ABSTRACT OF THE INVENTION Elongated, bendable drainage mat having a rectangular transverse cross section and comprising a polymeric core having a plurality of substantially rigid fingers extending from one side of a layer and an enveloping water permeable fabric having a penmittivity from 0.2 seconds-1 to 2.0 seconds-1 and a dynamic permeability after 106 loadings of at least 10-4 centimeters per second. Apparatus and systems using such drainage mat.

451023

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