Avoiding Whales in Anaerobic Digesters

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By Ian D. Peggs, P.E. – In 2014, shortly after being placed in service, one of two geomembrane-lined and covered anaerobic digesters generated extensive whales—“bubbles” in the lining system. Attempts to remove the apparent gas from under the cover were made unsuccessfully until it was realized that the cover was being uplifted by gas under the liner. Within two or three days, there were whales se... »

20 Landfill Failures in Next GSI Live Webinar

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On Wednesday, March 9, the Geosynthetic Institute will hold a live webinar on “Behavior and Analysis of 20 Solid Waste Landfill Failures.” The session will begin at 11:30 am (EST) promptly and last for approximately 75 minutes. Question time will be available at the end. Participants may earn 1.5 PDHs, with successful completion of a 10-question multiple choice test. Register online Co... »

Looking Back: The Geosynthetics Risk Management Program

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In 2004, Geosynthetica’s Director Elizabeth Peggs, Lara Costa, and founder Dr. Ian D. Peggs, P.E. (I-CORP International) created a white paper that proposed a Geosynthetics Risk Management and Loss Control Program (GRMP). Targeting insurers of construction projects, the program aimed to establish the need for expert design review to prevent costly failures that might result from improper use... »

60 Minutes on the State of American Infrastructure

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The long-running, renowned television news magazine 60 Minutes broadcast a report on American infrastructure on its 23 November 2014 episode. It has received a fair amount of attention for the more dire facts it shared with the public (but which are not all too surprising to the engineering community). WATCH “Falling Apart: America’s Crumbling Infrastructure” and related extras T... »

Slideshow of Whales in Geomembrane Lining Systems

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A slideshow of whales in geomembrane lining systems. When gas gets under a geomembrane, bubbles–or, “whales”–can form. A number of reasons may be responsible, such as installation damage, poor seaming, or a lack of appropriate construction quality assurance (CQA) measures like liner integrity surveys. Whales can impact wastewater facilities, manure lagoons, effluent ponds, ... »

Behavior and Analysis of 20 Solid Waste Landfill Failures

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By Robert M. Koerner – The Geosynthetic Institute (GSI) holds a monthly webinar, and the February 12 session is sure to interest a great many who work in or whose work intersects with the discipline of geosynthetics. The topic: “Behavior and Analysis of 20 Solid Waste Landfill Failures.” REGISTER ONLINE Date: February 12 Time: 11:30 am – 1:00 pm EST In comparison to the number of... »

TenCate Geosynthetics Earns Water Innovation Prize 2013

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The entry ‘Vertical sand-tight geotextile’ submitted by the Rivierenland Water Board in the Netherlands, has won the Water Innovation Award for 2013 in the category Dry Feet. In the words of the chair of the jury, Ms Annemieke Nijhof of Tauw Group B.V., the geotextile produced by TenCate Geosynthetics (www.tencategeosynthetics.com) is ‘the most innovative idea that can be used wi... »