Specification change for Drainage Materials

September 16th, 2016

This specification (Dl621) will change in the next issue of Geosynthetics magazine’s Specifier’s Guide (Volume 34, Number 6—December 2016 / January 2017). CHANGE FROM: Compressive Strength at yield per ASTM D1621 kPa (psi) TO: Compressive Strength at yield per ASTM D6364 units kPa (psi)

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