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Geofoam provides lightweight fill for York Bridge in Washington
August 1, 2006
…A King County DOT bridge project illustrates the use of geofoam fill. Abstract An interesting project under way in the Seattle area is the reconstruction of the York…
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Geopipe (aka ‘buried plastic pipe’)
August 1, 2006
…Klatte of the German chemical company Griesheim-Elektron both attempted to use PVC in commercial products, but difficulties in processing the rigid, sometimes brittle polymer hindered their efforts. In 1926, Waldo…
Ground rules
June 1, 2006
…during the last third of the 20th century, and since then have increasingly become a staple for landscape architects and designers. By incorporating the creative use of geosynthetics, landscape projects…
Geosynthetics: Update from Korea
June 1, 2006
…water-barrier materials. Recently, textured geomembranes were developed and currently tests are in progress. The main end use of HDPE geomembranes is as liners for waste landfills. The range of thickness…
Further comment on ‘Landfill closure’ column
June 1, 2006
…of the stability calculations. Even if the designer somehow obtained an “advanced copy” of the paper, it is recommended that designers not use information until it is published or contact…
Shoreline restored with geotextile tubes as submerged breakwaters
June 1, 2006
…Yucatan beaches are all connected to the same littoral dynamics. Changes in current patterns may cause negative effects to littoral drift at adjacent beaches. Based on these criteria, three important…
Initial feedback from CQA-ICP testing
June 1, 2006
…their Web site: www.iagi.org. In the decade since the NICET-CQA examinations were first crafted, little has been done in upgrading and updating the exams; and the “fit” for geosynthetics CQA…
Ecosystems, soil present challenges for levees
June 1, 2006
…“You can see the magnitude of what you’d [need to] build in soft soil conditions,” Cali said. Then there’s the issue of what materials to use to construct new levees,…
Selecting reinforced fill soil for MSE retaining walls
June 1, 2006
…use a variety of reinforced soils (NCMA recommends 35% < 0.075mm or greater). It is also clear from the literature that the combination of reinforced soil consisting of fine-grained soils…
Eight ways to achieve improved retaining-wall performance
April 1, 2006
…volume, and knowing prior to use, a soil is acceptable. c) Test compaction to document that the reinforced soil volume is constructed according to plan. Compaction testing provides the best…