Dedicated to advancing the use of fabricated geomembranes through education, research, and technology transfer.

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Factory fabrication reduces field welding, reduces installation time and costs, allows modular construction and provides consistent seam and liner quality.

FGI Creates Geomembrane Defect Leakage Calculator

This calculator estimates the leakage through geomembranes and composite liners with and without geomembrane defects/holes. The calculator illustrates the importance of intimate contact between the geomembrane and compacted subgrade or soil liner via different levels of contact.  The effect of wrinkles on leakage rates is also quantified using a database of wrinkle dimensions for a number of common geomembranes, which shows the presence of wrinkles can significantly increase leakage rates.

To view/download all of the FGI Calculators, please click HERE.

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