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Performance, design, and redundancy

June 1, 2013

Geosynthetic reinforced walls in the public sector By Dov Leshchinsky and Fumio Tatsuoka Introduction Geosynthetic reinforced soil can be viewed as a subset area of slope stability. In slope stability analysis, the factor of safety signifies the margin of safety against failure. It physically means that its reciprocal value signifies the average mobilization or utilization …

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Dominican Republic farm road improved with new retaining walls

Geogrid reinforcement improves access. By Ángel Conde Introduction The 25-km dirt road from Jarabacoa to Constanza in the mountainous central region of the Dominican Republic has long been a lifeline for local farmers transporting their bananas, vegetables, strawberries, coffee, and flowers. But the road suffered from landslides, severe erosion, and uneven surfaces, which slowed the …

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Geosynthetic solutions for Northumberlandia

February 1, 2013

The largest human form sculpted into the landscape By Patricia Guerra Escobar 1. Introduction 1.1 Project concept Northumberlandia is the world’s largest human form sculpted into the landscape, designed by renowned landscape architect and artist, Charles Jencks. The woman earth sculpture is lying at the entrance of a surface coal mine in southeast Northumberland, near …

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Reinforced levees stand strong

Geosynthetic materials provide hurricane protection through erosion control for Louisiana levees, and a Florida canal By Andy Burran Introduction Hurricanes and other extreme storm events seem to be intensifying, putting the U.S. infrastructure at increasing risk of failure. As the nation assisted the Northeast in rebuilding after Hurricane Sandy last fall, we were reminded of …

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Massive soil reinforcement at Cherry Island extends landfill’s use for decades

October 1, 2012

Finalist for 2012 award for Outstanding Civil Engineering Achievement By Ron Bygness The challenge Cherry Island Landfill, operated by the Delaware Solid Waste Authority (DSWA), has been used for municipal solid-waste disposal since 1985. Built on an old dredge disposal site at the confluence of the Delaware and Christina rivers in Wilmington, Del., the subsurface …

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Geosynthetic reinforced soil walls for debris barrier in Whistler, B.C.

August 1, 2012

By Alex Strouth, Mark Pritchard, David Roche, and Calvin VanBuskirk Introduction Picturesque Fitzsimmons Creek flows through the heart of Whistler, B.C., Canada—about 80 miles north of Vancouver and one of the host sites for the 2010 Winter Olympics. Few visitors to Whistler realize that Fitzsimmons Creek poses a debris flood risk to the village. This …

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Cross section of the Hetaoyu reinforced soil wall

June 1, 2012

A number of readers have responded with requests after seeing and reading about the 2011 International Achievement Award of Excellence winner, “Geotextile-reinforced soil retaining wall for Hetaoyu Mine coal processing plant” in the February/March issue of Geosynthetics. Most of the inquiries came from engineers asking for diagrams or cross sections of this distinctive structure built …

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Geotextile-reinforced soil retaining wall for Hetaoyu Mine coal processing plant

February 1, 2012

This project, submitted by TenCate Geosynthetics, won an Award of Excellence in the 2011 International Achievement Awards(IAA) / Geosynthetics presented by the Industrial Fabrics Association International. Each project in its own special way, exhibits outstanding innovation, technical skill and design excellence. Submissions of geosynthetics projects for the 2011 International Achievement Awards are being accepted now. …

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Application of complex reinforced structure near fault zone

This project, submitted by Ace Geosynthetics, won an Outstanding Achievement Award in the 2011 International Achievement Awards(IAA) / Geosynthetics presented by the Industrial Fabrics Association International. Each project in its own special way, exhibits outstanding innovation, technical skill and design excellence. Submissions of geosynthetics projects for the 2011 International Achievement Awards are being accepted now. …

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Geofoam plays a supporting role in academic and civic projects

September 21, 2011

Known primarily for its use as a soil stabilizer in transportation projects, expanded polystyrene (EPS) geofoam is now being viewed by engineers and contractors as the material of choice for an array of other commercial applications. With high compressive strength, light weight, and predictable performance, geofoam is appealing for reducing weight on concrete decks, creating …