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A guide for specifying drainage geocomposites
April 1st, 2020
By Lisa L. Damiano and Eric S. Steinhauser In September 2017, ASTM International released its Standard Guide for Specifying Drainage Geocomposites (ASTM D7931). The standard provides a guideline for calculating engineering properties related to drainage geocomposites, specifically allowable flow rate, associated reduction factors and shear strength properties. In basic terms, it codified design procedures so […]