ASTM International Committee D35 on Geosynthetics has published D7613, “Standard Specification for Flexible Polypropylene Reinforced (fPP-R) and Nonreinforced (fPP) Geomembranes.” This is a new standard and may impact hydraulic application material selection, such as pond liners. Tests and property limits used to characterize the sheet are values intended to ensure minimum quality. In-place system design criteria, such as field-seaming strength and material compatibility among others, are factors that should be considered but are beyond the scope of the specification.
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