Part 2: New design models for MSE walls and slopes

June 1, 2017

Introduction The design of many geotechnical structures is based on limit-state conditions. For example, in designing gravity walls, the load exerted by the retained soil on the wall is based on an assumed active state of stresses. That is, the wall moves sufficiently outward, enabling the retained soil to mobilize its shear strength along a …

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Environmental applications of geosynthetics in pipeline installations

June 1, 2016

Geo + Pipeline 101 Geosynthetics often play an important role on the environmental side of pipeline installations. During construction, actions must be taken to protect water quality, stabilize soil, and prevent soil erosion. Pipeline right-of-ways traverse many different types of landscapes, passing through sensitive resource areas such as streams and wetlands. Geosynthetics are used in …

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Geosynthetics & Landfills 101

June 1, 2015

Erosion control challenges at solid waste facilities By Eric S. Steinhauser Introduction Landfills, particularly municipal solid waste (MSW) landfills, are often misunderstood. Commonly referred to as “dumps,” these highly engineered facilities, and the engineering project teams involved in their development, do not get the respect they deserve. Once the primary option for MSW disposal, the …

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Vegetation establishment is crucial for mine reclamation

By Jill Pack Project Highlights Mine closure and reclamation Chestnut Ridge Sand Quarry Kunkletown, Pa. Applications Erosion control Slope stabilization Contractor The H & K Group Distributor/Installer Jobsite Products Hydraulic erosion control HydraCM Steep Slope Matrix HydraCX Extreme Slope Matrix Quantities 3,414 bales of HydraCX (about 49 acres) 220 bales of HydraCM (about 3 acres) …

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Steep geosynthetic-reinforced slopes stabilize access routes for construction of 27-km tunnel

June 1, 2014

Semmering Base Tunnel project in Austria By Sören Schmidt Introduction Following two years of preparatory work, main construction began on Austria’s 27-km Semmering Base Tunnel in January 2014. The tunnel between Mürzzuschlag and Gloggnitz on the Vienna–Villach/Graz main line is divided into three contract sections. The 13km central section is currently under construction, and two …

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South Bend recycles a new channel to protect the St. Joseph River

August 1, 2013

We don’t always have to use all virgin materials for new projects. By Kurt Kelsey Introduction Stormwater management is a necessary task that confronts every municipality. But how the stormwater is actually managed can differ. Typical gray-pipe solutions get the job done, but they do not provide filtering of the stormwater and they are not …

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Reinforced levees stand strong

February 1, 2013

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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Bluffside stabilization in Kansas City

August 1, 2012

Stabilizing the bluff By Jeremy Joseph The Briarcliff City Apartments sit high on a bluff in Kansas City, Mo. The master-planned community offers residents fine views of downtown and the Missouri River valley. Apartment dwellers enjoy restaurants, shops, and trails located within walking distance of the residential apartment complex. But the bluff that made the …

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Using geosynthetics to stabilize soils in a harsh environment

February 1, 2012

Erosion control in mining applications By Dhani Narejo, Bruno Hay, and Bryan Wedin Mine site erosion problems One of the largest nickel mining sites in the world is located on the island of New Caledonia in the South Pacific. Due to the size of the mining project and the terrain of the site, significant cut-and-fill …

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Geogrid provides erosion control, slope stability

September 22, 2011

Introduction The slope adjacent to the athletic fields at Saint Mark Catholic School in Huntersville, N.C. was the site of fairly severe surface erosion. A project to restore the slope with reinforcing geogrids was completed in 2010. The athletic field slope that had been failing was restored and Saint Mark Catholic School was able to …