These guidelines are installation guidelines for factory fabricated fabric-supported lightweight geomembranes (<0.64mm or < 25 mil), fabric-supported heavyweight geomembranes (> 0.64 mm or > 25 mil), and compounded unsupported geomembranes (0.25 to 1.52 mm or 10 - 60 mil) in thickness as measured by ASTM D5199, D751 or D1777). These guidelines are designed to provide a minimum set of standards for site installation. However, depending on the complexity and project specific requirements, a qualified design engineering firm may be required for design and installation specifications of the geomembrane.
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