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Expanding the geosynthetics market
February 1st, 2015
By Lucie Passus Lobby Day Fall 2014 Despite a shakeup in the U.S. Congress following the November 2014 midterm elections, GMA Lobby Day Nov. 18–19, 2014, saw its largest and most active member participation yet. More than 30 attendees from GMA member companies and geosynthetics allies convened in Washington, D.C., to participate in 28 congressional […]
Rail project required separation, filtration, reinforcement
February 1st, 2015
Introduction The Canadian National Railway (CN Rail) wanted to build an additional six-track extension at its Transcona Yards in Winnipeg, Manitoba. Heavy railcars were expected to pass over this extension area and CN Rail was looking for an economical, efficient, environmentally friendly, and technically sound solution for its track extension. Challenges The construction site had […]
Reconstructing and relining Nottingham Lake high in the Rockies
February 1st, 2015
Replacing a 32-year-old liner. By Bart Ewing and Duff Simbec Introduction Nottingham Lake is nestled high in the Rocky Mountains and has been the pride of Avon, Colo., for as long as anyone can remember. Tourists and residents use the lake for winter recreation and for boating, fishing, and swimming in the summer. It serves as […]
Design considerations
February 1st, 2015
By Richard Thiel, Edward Kavazanjian Jr., and Xuan Wu Introduction Figure 1 shows a conceptual cross section of a landfill sideslope, including final grades at the end of waste placement and the ultimate grades due to the settlement that occurs following the end of waste placement. Settlement at any point in the landfill will be […]