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Geotube technology project in India
June 1st, 2007
A district irrigation department in West Bengal, India has initiated a geotextile tube project on an experimental basis in an effort to check coastline erosion. A 1-km test section on the Bay of Bengal coastline from Shankarpur to Jalda in the district of East Midnapore was installed this spring. The project, implemented to stop the […]
Ten reasons why you should be in Cancún next March
June 1st, 2007
By Beth Wistrcill, Manager, Geosynthetics Conferences and Events Editor’s Note: We asked the new Manager for Geosynthetics Conferences and Events, Beth Wistrcill, to offer her take on why you should attend the GeoAmericas2008 Conference and Exhibition in Cancún March 2-5, 2008. The first. This is the first-ever Pan-American Geosynthetics Conference and Exhibition! It promises to […]
AOS vs. EOS
June 1st, 2007
From the GMA Techline Subject: AOS or EOS? What is the difference between AOS (Apparent Opening Size) and EOS (Equivalent Opening Size)? (Larry, Louisiana) Reply: The real answer is: “Not much.” Now let me answer your question. The U.S. Army Corps of Engineers developed AOS in 1972 on the basis of sieving glass beads through […]
Geotextile fabric
June 1st, 2007
From the GMA Techline Subject: Geotextile fabric We are specifying geotextile fabric: between the soil media (in a raingarden) and the underlying stone that contains the underdrain pipe. between the sod and the underlying stone (water quality swale) that contains the underdrain pipe. the top, bottom, and sides of an infiltration trench (filled with VaDOT […]
Geogrid-reinforced soil mat
June 1st, 2007
From the GMA Techline Subject: Geogrid-reinforced soil mat I am considering a geosynthetic-reinforced soil mat to be placed under a building structure with conventional footings. The purpose of the soil mat would be to limit differential settlement across the building footprint in event of seismically induced liquefaction settlement. That is, instead of a pre-stressed concrete […]
Cost estimate data
June 1st, 2007
From the GMA Techline Subject: Cost estimate data In 2006, we completed a 30-acre pond (depth, approximately 30 ft.), and now we want to estimate the cost for a pond of similar size for a construction start in November 2007. For estimating purposes, are you able to suggest a percentage increase that we should use […]
Product specification
June 1st, 2007
From the GMA Techline Subject: Product specification We are proposing to stabilize a section of eroded riverbank with riprap. We would like to install a fabric beneath the riprap to hold the existing sandy soils in place. Can you give us a recommendation? The river is tidal and the area is exposed to full sun […]
Geotextile transport layer
June 1st, 2007
From the GMA Techline Subject: Geotextile transport layer We need some information about the characteristics of the transport layer (special geotextile) used in association with leak-detection sensors and placed between a drainage geocomposite layer (geonet plus geotextile separator) and the HDPE geomembrane, corresponding to part of the impervious system projected for the base of a […]
Techtextil-2007 held in Frankfurt
June 1st, 2007
Exhibitors, presenters, and other industry visitors gathered June 12–14 for Techtextil-2007 in Frankfurt, Germany. Techtextil is a featured international trade fair for technical textiles and nonwovens. A global market of technical textiles was showcased.
Caveat venditor—When practice is far from theory
June 1st, 2007
By Ian D. Peggs At the Geosynthetics-2007 conference earlier this year in Washington, I had dinner with a geomembrane manufacturer colleague and he asked me, “How should we respond to a customer’s question: ‘Is your geomembrane compatible with my chemical solution of A, B, C, at XY°C?’ and then says he is going to order […]