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Sustainability and the fiber-reinforced soil repair of a roadway embankment

August 1, 2011

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 carbon footprint perspectives. (from the Geosynthetic Research Institute’s 24th conference, 2011) Introduction Site history Joe …

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Geosynthetic reinforced soil walls as integral bridge abutments

April 1, 2011

From ER-2010 / Earth Retention Conference #3 By Michael R. Simac and David J. Elton Introduction The first use of geosynthetic reinforced soil walls for integral bridge abutment construction in North America occurred on the Greenville Southern Connector (Interstate 185) toll road in 1999. A second bridge with a longer span and higher loads was …

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Geosynthetic reinforced walls and steep slopes: Is it magic?

June 1, 2010

By Dov Leshchinsky Introduction The history of humankind indicates that most people, arguably, embrace magic. Adding exotic ceremonies turns magic into voodoo. While magic is based on uncritical thinking, relying on it in engineering is undesirable because it could lead to overly expensive structures or, worse, unsafe practice. Hence, designers use rules stemming from mechanics …

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After the typhoon in Taiwan: Testament to an award-winning reinforced slope

February 1, 2010

Ace Geosynthetics wins top prize in 2009 International Achievement Awards By Ron Bygness, editor, Geosynthetics Aug. 7–10, 2009, were devastating days in Taiwan, when Typhoon Morakot struck the island directly. The waves of unrelenting rain and wind proved to be the deadliest typhoon ever to strike the island nation. More than 600 people were killed, …

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Geogrid reinforcing behind rigid concrete retaining walls

October 7, 2009

From the GMA Techline Subject: Geogrid use behind rigid concrete walls I was wondering if you can provide some information or guidance regarding the use of geogrid reinforcing behind rigid concrete retaining walls. My main questions are: How much can the use of geogrid reduce the lateral earth pressures acting on the retaining wall? How …

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Erosion-control mix rebuilds Clyde’s creekbank

August 1, 2009

A North Carolina town used a portfolio of geosynthetic erosion-control and reinforcement materials to restore a local streambank and relieve safety threats. Introduction During two weeks in September 2004, the town of Clyde, N.C., was pounded by hurricanes Ivan and Frances, both delivering destructive amounts of rainfall. The small town recovered, but four years later …

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Geotextiles in levees (Part 2 of 2)

June 1, 2009

History, performance, and design of geotextiles in levees: A report from New Orleans By Jody Dendurent and Mark Woodward Editor’s note: Part 1 of this 2-part series ran in the April/May issue of Geosynthetics. Following the Abstract and Introduction below, Part 2 concludes with sections 3, 4, and 5 of this manuscript. Abstract Geotextiles are …

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Geotextiles in levees (Part 1 of 2)

April 1, 2009

History, performance, and design of geotextiles in levees: A report from New Orleans By Jody Dendurent and Mark Woodward Abstract Geotextiles are a key element in building levees that will survive catastrophic storms. The geotextile-reinforced earthen levees in New Orleans performed remarkably well during Hurricane Katrina in August 2005. With the current focus on updating …

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Reinforcement geosynthetics

From the GMA Techline Subject: (None) — Is there a specific geosynthetic product to aid in the support of a single-story building? The project is located in central Florida, over roughly 6ft of fill. (Rick, Ohio) Reply: You ask a common question concerning the possible foundation support of using a high strength geotextile or geogrid. …

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Turning the Red River green

February 1, 2009

The Red River of the North submerged 2 Upper Midwest towns 12 years ago. Now geotextile matting is part of the foundation for a sweeping urban levee and greenway. By Adam Regn Arvidson Introduction Today, the Greater Grand Forks Greenway is a large, beautiful park bordering the Red River of the North in the twin …