The beginnings of Geosynthetics

February 1, 2013  |  News

1983 The first issue of a new quarterly magazine called Geotechnical Fabrics Report is published by the St. Paul, Minn.-based Industrial Fabrics Association International (IFAI). The editor is Michael E. Coughlin … Byline contributors in the premiere issue are Bruce Lamberton, J.P. Giroud, Ro…
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NAGS/GMA short courses update

February 1, 2013  |  News

By L. David Suits During the past two years, the North American Geosynthetics Society (NAGS) and the Geosynthetic Materials Association (GMA) have worked together to sponsor several regional short courses on various areas of geosynthetics in transportation applications. These courses included one se…
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A test pad guide to substantiate geosynthetic designs

February 1, 2013  |  News

By Bob and George Koerner To construct and examine a scaled-down version of a final design to substantiate its appropriateness is often a worthwhile pursuit. One of the earliest such efforts with geosynthetics was done by Karl Terzaghi in 1958 at the Mission Dam in British Columbia, Canada. The task…
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New geosynthetics advocacy aimed at state and local levels

February 1, 2013  |  News

By Andrew Aho GMA has developed a new State and Local Advocacy (SLA) program to advocate for geosynthetic usage at state level and to the state agencies. GMA launched SLA to build on the successes we have had at the federal level providing awareness and promoting solutions that geosynthetic mater…
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RemTech 2012 report

February 1, 2013  |  News

The sixth annual RemTech Remediation Technology Exhibition and Conferences was held in Ferrara, Italy, Sept. 19-21, 2012, under the auspices of various technology societies, including the International Geosynthetics Society–Italian Chapter (AGI-IGS). The RemTech Expo is an event dedicated to r…
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Plastic connections

February 1, 2013  |  Q&A: GMA Techline

From the GMA Techline RE: Reinforced geomembrane seams When we last spoke, I mentioned we were looking for a plastic connectlon to insert into concrete blocks. Currently, we use galvanized steel, but where sulphates are an issue we cannot do this. Can you recommend anything? (Chris | UK) Reply: Firs…
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Reinforced geomembrane seams

February 1, 2013  |  Products

From the GMA Techline RE: Reinforced geomembrane seams I was hoping you could give me a place to find a typical requirement for the seaming of reinforced geomembranes, specifically 60-mil reinforced thermoplastic polyolefin (TPO). When seaming a reinforced TPO geomembrane, what are typical values we…
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Geotextile compatibility w/typical MSW landfill leachate

February 1, 2013  |  Products

From the GMA Techline RE: Geotextile compatibility w/typical MSW landfill leachate We need to respond to an Environmental Protection Agency (EPA) request for additional documentation that shows geotextile and geomembrane compatibility with typical landfill leachate. The request is associated with a …
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Geomembrane leakage rates

February 1, 2013  |  Products

From the GMA Techline RE: Geomembrane leakage rates I’m wondering if you can help me find an average value and range of values for geomembrane cover leakage rates (in gallons/acre/day) as it relates to waste rock stockpiles or covers for solid waste disposal. I reviewed the Geosynthetic Instit…
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Floating covers

February 1, 2013  |  Products

From the GMA Techline RE: Floating covers I am looking for information on designing and installing a floating roof cover to a circular concrete reservoirs. We have completed many floating cover projects to square and rectangular (slope embankment) earth dams but we are very interested in finding inf…
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