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NPA geocell for railway line repair in permafrost region

June 1, 2021  |  Case Studies, Features

Churchill is a port city located on Hudson Bay in northern Manitoba, Canada. The nearest roadhead village of Gillam is 156 miles (252 km) south. Hudson Bay Railway (HBR), the only mode of land transport to Churchill, was completed in 1929. This single-line railway track has served the northern port …
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Design of reinforcement geosynthetics in landfill piggyback expansion

June 1, 2021  |  Case Studies, Features

An operator at a nonhazardous waste storage facility proposed extending the facility’s life, within the existing perimeter, by vertically expanding the cells in operation to a maximum thickness of waste of 52.5 feet (16 m). This project is based on nonhazardous waste storage cells 49.2-feet (15-m)…
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Dewatering of sludge from a sewage treatment plant with geotextile tubes

June 1, 2021  |  Case Studies, Features

Water is an important resource for people’s quality of life and is indispensable for several uses, including desedentation. However, this resource is finite and available in small quantities in the quality of fresh water, at liquid state and on the surface. Therefore, rivers and lakes, providers o…
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Modular geosynthetics construction

April 1, 2021  |  Features

Modular construction is a process in which a building or other item is constructed primarily off-site; under controlled factory conditions; and using the same design, materials, equipment, testing and construction quality control and assurance (CQC/CQA) techniques as a field-constructed facility—b…
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Development of a new design method for geosynthetic-reinforced RPEs

April 1, 2021  |  Features

Rapid and extreme climate change is putting our planet under stress. As a consequence, in mountain and hilly regions, infrastructure and people are more often threatened by quick and unpredictable rockfall events. Falling boulders can have extremely high speeds, exceeding 11 mph (5 m/s) and up to 67…
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Comparative analysis of the flow and filtration capabilities of sediment retention devices—Part 2

April 1, 2021  |  Features

Sediment retention devices (SRDs) include silt fences, wattles, filter logs, compost socks and various types of stormwater inlet protectors. They are a widely used best management practice (BMP) to provide sediment filtration from stormwater runoff while allowing water passage. However, SRD performa…
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Comparative analysis of the flow and filtration capabilities of sediment retention devices—Part 1

February 1, 2021  |  Features

By James E. Sprague and C. Joel Sprague Sediment retention devices (SRDs) include silt fences, wattles, filter logs, compost socks and various types of stormwater inlet protectors and are a widely used best management practice (BMP) to provide sediment filtration from stormwater runoff while allowin…
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Bituminous geomembranes (BGM) for ponds in mining

February 1, 2021  |  Case Studies, Features

By Natalie Daly and Bernard Breul  Bitumen has emerged as a standard 20th-century waterproofing material in civil and water engineering in the form of bituminous concrete, asphalt and bituminous geomembranes. The first applications of bituminous geomembranes (BGM) were in France in 1975 near Gr…
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Premier Product Showcase 2021 offers first look at new products and services

February 1, 2021  |  Features, Premier Product Preview

Here is your first look at some of the new products and services that will be available from companies in 2021.  Geosynthetics Virtual Conference 2021 is co-locating with the IECA Annual Virtual Conference and Expo. The 2021 virtual show floor will bring together exhibitors covering the gamut o…
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A geosynthetic wrap-face vegetated wall system

October 1, 2020  |  Case Studies, Features

For highway embankment construction  By Stanley M. Miller and Drew Loizeaux A recent creek enhancement project to facilitate the passage of bull trout in Pend Oreille County of northeastern Washington state required removal of a 6-foot (1.8-m) diameter concrete culvert (Figure 1), realignment o…
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