“Educate the Educators”: A retrospective

August 1, 2014

1994–1998 at Auburn University By Bob Koerner For a week during five summers, 1994–1998, geosynthetic seminars were held at Auburn University in Auburn, Ala., under the general title “Educate the Educators.” The host, coordinator, and facilitator was Prof. Dave Elton of Auburn’s Civil Engineering Department. For each course, a series of 8–10 experts presented various …

‘Geosynthetics’ now in U.S. law

June 10, 2014

WRRDA signed by President Obama Tuesday morning President Obama this morning signed into law the Water Resources Reform & Development Act (WRRDA). Geosynthetics language was included in the final bill, which had passed with large bipartisan support in both the U.S. House and Senate in May. A GMA priority Included in WRRDA is the first-ever …

The importance of geosynthetic performance testing

June 1, 2014

Bob Koerner Most people would agree that the analysis of failures is important. The basic reasoning is that each such case history represents a situation where the designed factor-of-safety value has fallen below unity. Conversely, each case of nonfailure represents a factor-of-safety value of one or higher. How much higher is, of course, not known. …

An association for the geosynthetics industry

By Lucie Passus According to Merriam-Webster, an association is an organized group of people (or companies) that share a common interest. As GMA’s former managing director, Andrew Aho, wrote in his April 2013 GMA column in Geosynthetics on the history of GMA, this association was born out of a need to represent the interests of …

GM19, Revision 7—Peel separation 5 out of 5?

From the GMA Techline I am looking for a discussion of how peel separation % in the latest revision of GM19 went from 4 out of 5 specimens to 5 out of 5 specimens having to pass the 25% or less requirement. (Gabriel | California) Reply: Others have noticed it as well and in response …

FS for anchor trench calculations?

From the GMA Techline Do you have a recommendation for what Factor of Safety to apply to the allowable geomembrane force for anchor trench calculations? (Melanie | Colorado) Reply: Over the years my thoughts have changed from having a high FS for geomembranes in their anchor trenches to treating the situation very differently. The motivation …

Geomembranes for pipes?

From the GMA Techline I have been asked to wrap a proposed 30-in. circular/cylindrical sanitary sewer pipe (HDPE) with a geomembrane as a dual containment layer. Could I get some pointers as to what kind of geomembrane(material, thickness, etc.) can be used to achieve this task? Any other information, such as pros and cons, would …

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The four Ws of GSI white papers

April 1, 2014

Why, what, when, and where? According to Wikipedia (my favorite source for all kinds of information), a white paper is “an authoritative report … to understand an issue, solve a problem, or make a decision. White papers are used in two main spheres: government and business-to-business marketing.” From my title, I suggest that the “why” …

Ongoing work for Geosynthetic Materials Association

By Lucie Passus GMA wrapped up the first of two 2014 visits to Washington, D.C., March 4 – 5. This federal government relations program continues to attract GMA members and its allies, who met with their respective elected officials to focus on three key legislative and regulatory items currently of importance to the industry. Previously, …

ASTM D35 Committee on Geosynthetics establishes award

First recipient, Dave Suits, is namesake for the honor By Ron Bygness At its January 2014 biannual meetings, ASTM International’s Committee D35 on Geosynthetics announced that it had established a committee award that would recognize outstanding long-term service and commitment to Committee D35. And the first recipient of the new L. David Suits Award was …