Base stabilization at Port of Invergordon, U.K.

January 18, 2021  |  Case Studies, Reinforcement

A new 365,973-square-foot (34,000-m2) container area was required in the Port of Invergordon, U.K. The area was constructed as an unbound pavement with a crushed gravel surface. Presto GeoSystems GEOWEB geocells presented an excellent solution to minimize the overall cross-section depth through its …
Ground improvements using geofoam: A case history

October 14, 2020  |  Case Studies, Reinforcement

By Javaid M. Alvi, Ph.D., and Jahangir J. Kabir, Ph.D., P.E The project site is a triangular-shaped property located at the intersection of Raleigh Avenue and West Liberty Avenue in the Borough of Dormont, Allegheny County, Pa. (Figure 1). The site housed two Nissan buildings, one with a showroom at…
Geosynthetics magazine offers free sponsored webinar on natural facings for steep slopes and walls

October 24, 2018  |  Erosion Control, Erosion Control Materials, News, Reinforcement

Geosynthetics magazine will present the Tensar Corp.-sponsored webinar “Natural Facings for Better Performance and Value on Very Steep Slopes and Walls” on November 8 at 1:00 p.m. EST. This presentation will provide a case study example of how natural facings provide better performance and value…
Construction inspection of MSE walls, berms and slopes is focus of GSI online course

September 27, 2018  |  GSI News, News, Reinforcement

The Geosynthetic Institute (GSI) will host an online short course entitled “Course 2: Construction Inspection of Mechanically Stabilized Earth (MSE) Walls, Berms and Slopes,” Nov. 6–8, from 11 a.m. to 12:30 p.m. and from 2 p.m. to 3:30 p.m. EDT each day. Robert M. Koerner and George Koerner wi…
Part 2: New design models for MSE walls and slopes

June 1, 2017  |  Case Studies, Containment, Erosion Control, Feature, Reinforcement

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 …
Pioneer Mountains Scenic Byway frost heave prevention and results

April 1, 2016  |  Case Studies, Reinforcement, Transportation

Abstract The Pioneer Mountains Scenic Byway, located about 30 miles (48km) west of Dillon, Mont., seasonally experiences frost heave problems over a 20-mile (30-km) stretch of road. The road is closed to winter traffic and typically re-opens in May. Longitudinal full-section depth cracks form during…
Bridge building in Maine with GRS (geosynthetic-reinforced soil)

April 1, 2016  |  Case Studies, Feature, Reinforcement

The challenge In 2013, the small town of North Haven on North Haven Island off the coast of Maine, began construction on a unique bridge project. The goal was to rebuild Beach Bridge, a deteriorating structure that provided access to a handful of seasonal homes and an important wharf for local lobst…
Part 1 Durability of geosynthetics: The basics

August 1, 2015  |  Case Studies, Feature, News, Reinforcement

By John H. Greenwood Author’s note This article is based on a training presentation delivered on Sept. 24, 2014, at the 10th International Conference on Geosynthetics in Berlin, Germany. That talk was itself based on courses given at ERA Technology, Leatherhead, U.K., with Alan Friday, and later a…
Instrumented MSE wall reinforced with polyester straps

August 1, 2015  |  Case Studies, Feature, Reinforcement

Emerging technology Introduction Mechanically stabilized earth (MSE) walls with large concrete panel facing, reinforced with polyester straps, is an emerging technology in the U.S. To enable the design of this wall system using AASHTO’s methodology, its classification of extensibility must be esta…
Geosynthetic reinforcement solutions for Lake Tahoe highway

February 1, 2014  |  Feature, Reinforcement

By Katie Westfall Introduction U.S. Highway 50 crosses the central portion of Nevada through several large desert valleys, basins, and mountain passes. The road climbs steep 8% grades and carries travelers around hairpin turns and through pine forests. In some places, erosion of the slopes adjacent …