ECTC’s installation guidelines for sediment retention roll

August 2, 2011  |  Products

The Erosion Control Technology Council (ECTC) has published a “General Usage and Installation Guidelines for Sediment Retention Fiber Roll (SRFR),” it announced in a July 29 press release. The guidelines are the result of consensus among SRFR manufacturers and are designed to address the…
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Michael Heibaum named 2012–13 Mercer Lecturer

August 1, 2011  |  News

The Mercer Lecture selection committee, chaired by Prof. Fumio Tatsuoka, announced online July 27 that Dr.-Ing. Michael Heibaum has been appointed as the lecturer for the 2012–2013 Mercer Lecture Series. The announcement said that he will deliver his presentation, “Geosynthetics for wate…
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Septic system features geotextiles

August 1, 2011  |  Products

The Enviro-Septic System was invented in the small northern New Hampshire town of Whitefield by Dave Presby. Presby, president of Presby Environmental, learned a long time ago that if he built an eco-system that cleaned the effluent before it got to the soil, the results were markedly better. Geotex…
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GSI’s second Inspector Certification Program

August 1, 2011  |  News

By Bob Koerner In 2006, GSI launched its first inspector certification program for the installation of geosynthetics at waste containment facilities. To be a successful candidate, the individual must provide an application verifying six months of related experience, an employer’s recommendatio…
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GMA government relations update

August 1, 2011  |  GMA News

Here is an update on issues GMA will be advocating during the Sept. 13–14 Lobby Day in D.C. By Andrew Aho Geosynthetic materials as separators and interlayers in roadways study GMA’s request for congressional funding of a cost-benefit study of geosynthetics as separators and interlayers in roads…
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Sign up now for geosynthetics short courses

August 1, 2011  |  News

The Geosynthetic Materials Association (GMA) and the North American Geosynthetics Society (NAGS) are teaming up to provide a series of 1- and 1.5-day short courses for civil engineers. The target audiences are county, municipal, and commercial engineers who work on projects requiring geosynthetic re…
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Specifying allowable leakage rates

August 1, 2011  |  Products

How to avoid specifying a disaster By Glenn T. Darilek and Daren L. Laine Introduction Allowable Leakage Rates or Action Leakage Rates (ALRs) are specified for installed geomembranes to quantify the maximum allowable liquid leakage. If the ALR is exceeded, corrective action must be taken to reduce t…
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Patch extrusion welding as a geomembrane failure mechanism

August 1, 2011  |  Case Studies

Geomembrane performance: Lessons learned—Part 2 By Garrett Q. Dutson Introduction This case history examines the geosynthetic construction, use, failure, and repair of an evaporation pond at an EnergySolutions facility in Clive, Utah. A high priority is placed on management of water that has c…
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Comparison of carbon footprints for various stormwater retention systems

August 1, 2011  |  Case Studies

Introduction Construction materials continue to be a major source of greenhouse gases (GHG), based on the fossil fuels used in their production. As the amount of greenhouse gases generated each year continues to increase, there is a conscious effort to provide alternatives with lower carbon footprin…
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Sustainability and the fiber-reinforced soil repair of a roadway embankment

August 1, 2011  |  Case Studies

By Garry Gregory From the Geosynthetics Research Institute’s 24th conference, 2011.The articles in this series encompass all types of geosynthetics and their applications viewed from the context of sustainability. Traditional solutions are compared with geosynthetic solutions from both cost and ca…
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