Methods to estimate pressures and strains in pond geomembrane bubbles

August 1st, 2020

By Richard Thiel, Hesham Eldesouky and Richard Brachman FIGURE 1 Bubbles in pond with 60-mil (1.5-mm) HDPE geomembrane on verge of bursting This article provides an update, validation and improved approach for predicting the shape, pressure and strains that can occur in an exposed geomembrane bubble (aka “whale”) created by gas trapped below the geomembrane […]

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Geosynthetics are at the ready

August 1st, 2019

Geosynthetics play a varied and important role in infrastructure, from liners and covers for reservoirs to landfill covers. They can be found in highway construction and in coal ash impoundments. They are part of the basic framework of public and private construction, supporting modern expectations for transportation, sanitation and reliable energy. The American Society of […]

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Geosynthetics: To protect and conserve water

April 1st, 2018

Geosynthetics are part of a flexible, cost-effective infrastructure that helps to treat, store and deliver clean water around the world. If you’ve had a glass of clean water today, you can likely thank a geosynthetic product. Geosynthetics perform behind-the-scenes work to ensure communities have access to adequate potable water and clean waterways. They also hold […]

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FGI offers pond liner leakage calculator

January 16th, 2018

The Fabricated Geomembrane Institute (FGI) Pond Liner Calculator is an Excel spreadsheet based on Darcy’s Law that produces a comparison between leakage rates for compacted soils and geosynthetic liners. The FGI calculator allows the user to input the size of the containment basin (including length, width, depth, side slope angle and freeboard); the anticipated level […]

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