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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…
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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CCR landfill final cover test pad—Part 2

October 1, 2020  |  Case Studies, Features

By Nina J. Balsamo, John Massey-Norton, John R. Klamut, Terry Queen,Charles F. Straley and Mark R. Lehner An integrated drainage system (IDS) geomembrane, which provides both a low-permeability membrane and drainage space above the geomembrane, is being used in the final cover at a coal combustion r…
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Reinforced embankments for the causeway for a North Wales bridge project

October 1, 2020  |  Case Studies, Features

By Patricia Guerra-Escobar  The Pont Briwet Project in Penrhyndeudraeth, North Wales, U.K., consisted of the replacement of a historic timber trestle bridge with a new 446-foot (136-m) long concrete viaduct and the upgrade of the approach road to the north and south of the crossing (Figure 1). …
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CCR landfill final cover test pad—Part 1

August 1, 2020  |  Features

By Nina J. Balsamo, John Massey-Norton, John R. Klamut, Terry Queen,Charles F. Straley and Mark R. Lehner An integrated drainage system (IDS) geomembrane, which provides both a low-permeability membrane and drainage space above the geomembrane, is being used in the final cover at a coal combustion r…