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Geosynthetic strip MSE wall at Point Defiance Marina

April 1, 2020  |  Case Studies, Features

By Paul C. Frankenberger and Robert Lozano  This article will focus on a geosynthetic strip mechanically stabilized earth (MSE) wall case study using discrete geosynthetic strips with large precast facing panels (Figure 1), an innovation of the original MSE invention. The system is the Highway …
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Erosion control using concrete-enhanced synthetic turf

February 1, 2020  |  Case Studies, Features

By Bradford H. Cooley and Bryan Scholl Concrete-enhanced synthetic turf (CEST) is a hardened revetment system best described as a fiber-reinforced, flexible concrete liner. It consists of a high-friction, impermeable geomembrane layer overlain by an engineered synthetic turf, which is infilled with …
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U.S. Bank Stadium geosynthetic reinforced stress relief wall

February 1, 2020  |  Case Studies, Features

Design, construction and fire damage mitigation By Nathan M. Lichty, Stephan M. Gale and Timothy P. Bendell Demolition of the Hubert H. Humphrey Metrodome stadium in Minneapolis, Minn., occurred in 2014 and subsequent construction of U.S. Bank Stadium (Figure 1), the home of the Minnesota Vikings an…
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Overcoming expansive soils with Tensar’s TriAx Geogrid

November 13, 2019  |  Case Studies

Expansion: it’s a win for communities when roads reach out and connect people to business, resources and formerly rural areas. But another form of expansion—soil that expands when water is added and shrinks when it dries out—can thwart this progress by making it hard to economically build and …
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Reinforcing dunes and bluffs with geosynthetics

October 1, 2019  |  Case Studies, Features

By Brian Maggi, Christopher D. P. Baxter, Aaron Bradshaw, Annette Grilli and Naser Al Naser The devastating effects of recent hurricanes and nor’easters highlight the need to improve the resilience of coastal communities. There is a trend toward implementing “soft” engineering solutions such a…
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Repairing an oil well platform with a geogrid reinforced soil slope

October 1, 2019  |  Case Studies, Features

By Jeff A. Segar  The Mormon Butte site is in the Little Missouri National Grassland in the Badlands region of western North Dakota (Figure 1). Constructed in 1985 and leased through the U.S. Forest Service, the pad elevation was created by cutting into the side of the butte and depositing the …
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Nature area drainage control with GCCM

October 1, 2019  |  Case Studies, Features

By Joe Royer, Kurt Chirbas and Ziad Mazboudi The City of Laguna Niguel in Orange County, Calif., has its origins in the Rancho Niguel Mexican land grant, acquired in 1959 by the Laguna Niguel Corp. to develop one of California’s first master-planned communities, which has become predominantly a be…
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Lessons learned in alternative coal ash pond closure design and construction

October 1, 2019  |  Case Studies, Features

By Anna M. Saindon Coal ash pond closures often face unique challenges due to location, available borrow soils and construction constraints. These challenges can lead to alternative methods of closure to comply with Resource Conservation and Recovery Act (RCRA) Subtitle D and coal combustion residua…
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Remediation case study of uranium ore residues settling basin

September 30, 2019  |  Case Studies, Features

By Laura Carbone, Ole Syllwasschy and Lilma Schimmel In the past, the Soviet-German stock company Wismut carried out an intensive uranium mining operation resulting in a large amount of polluted tailings containing daughter nuclides of uranium (Koß 1997) that were released into industrial sediment …
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An innovative cover system to close an ash/sludge impoundment

August 1, 2019  |  Case Studies, Features

By Paul C. O’Malley, José L. Urrutia and Don DiGuilio The two projects (confidential client) are industrial sites consisting of coal ash and by-product sludge located in the southeastern United States. The projects included 70 and 67 acres (28 and 27 ha) in closure areas, and the waste source con…
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