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GMA helps organize pre-Expo green roof workshop in San Diego
August 1st, 2009
By Andrew Aho A pre-show program titled “How to design green roofs and landscapes” will be held Tuesday, Sept. 22, 5:30–8:30 p.m., at the San Diego Marriott Hotel & Marina, in conjunction with the 2009 IFAI Expo at the San Diego Convention Center Sept. 23–25. This workshop is free to licensed architects (see details below). […]
30-year anniversary for the first hardcover book on geosynthetics
August 1st, 2009
By Bob Koerner, Geosynthetic Institute/Drexel University In the late 1970s I was in the habit of regularly inviting speakers to make presentations to my geotechnical classes at Drexel University. Two were very memorable: Bill Ragen of Mirafi and Bill Witherow of Carlisle. Their respective topics were “filter fabrics” and “pond liners” and, in truth, I […]
Comments and a question for the GMA Techline doctor
August 1st, 2009
Red or white? I am writing to respond to the April/May issue of Geosynthetics, specifically to the GMA Techline Q & A. The GMA Techline is a valuable element of the magazine, one that I read fervently. I have several comments and a question for Dr. Koerner. The question from Claudia on the comparison of […]
TenCate introduces new drainage geosynthetic
August 1st, 2009
TenCate Geosynthetics has introduced Mirafi MiraGreen™D for site drainage applications for engineers and architects designing environmentally sound projects. The product is a nonwoven drainage geotextile composed of 30% (LEED calculated) recycled content and it can be used in a wide variety of drainage applications. Its manufacturing process is designed to reduce dependence on virgin petroleum-based […]
FGI offers short courses
August 1st, 2009
The Fabricated Geomembrane Institute (FGI) will offer “Constructing with Fabricated Geo-membranes—Flexibility, Choices, and Superior Performance” Oct. 23 in Denver. This course is presented by Timothy Stark, Stan Slifer, John Heap, Daren L. Laine, Bill Shehane, Stuart Lange, Andrew Mills, and Gary Kolbasuk, among others. Course participants are eligible for 8 PDHs from the University of […]
Thrace-Linq commissions nonwovens equipment
August 1st, 2009
A new nonwoven production line has been commissioned at the Summerville, S.C., facility of Thrace-Linq. The company’s advanced production line includes a fiber-opening and blending system, oven and dryer, calender, winding and slitting system, and automated packaging. For more information: www.thracelinq.com.
Abstracts invited for geosynthetic materials workshop
August 1st, 2009
Abstracts are invited in support of the workshop Geosynthetic Materials Durability: Field and Laboratory Experiences, scheduled for Jan. 29, 2010. This workshop will focus on all types of geosynthetic materials durability in both covered and exposed applications. The four-part workshop includes long-term field experiences under various environment conditions: accelerated weathering studies, polymers, and additive packages […]
Infiltrator acquires Ring Group
August 1st, 2009
Infiltrator Systems has acquired Ring Industrial Group, manufacturer of the EZflow brand of geosynthetic aggregate drainfield systems. EZflow products are established in the onsite industry with 15 years of installations in more than 30 states and Canadian provinces. The EZflow geosynthetic expanded polystyrene system is engineered for optimal absorption efficiency. Modular bundled configurations allow installations […]
New Caltrans guide for geotextiles
August 1st, 2009
A new design guide for using “subgrade enhancement geotextiles” (SEG) in road construction has been produced by the California Department of Transportation (Caltrans). The 18-page document is intended to assist pavement design engineers in five areas: What are SEGs and what functions do they serve. How to determine if geotextile materials are needed for a […]
Research and innovation: Seismic performance of various geocell earth-retention systems
August 1st, 2009
By Dov Leshchinsky Editor’s note: Feature articles in Geosynthetics magazine focus on projects and how geosynthetic materials are used in a variety ofapplications. Very rarely is the focus solely on a specific product, company, or individual. Professor Leshchinsky and I note that this article—particularly the Introduction and Conclusions—departs from this policy in an effort to […]