Specification change for Drainage Materials

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)