ELONGATED BENDABLE DRAINAGE MAT

摘要

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 permittivity from 0.2 s<-><1> to 2.0 s<-><1> and a dynamic permeability after 10<6> loadings of at least 10<-><4>cm/s. Apparatus and systems using such drainage mat.