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Carlisle Energy introduces new landfill closure system

April 1, 2010 | Products

Carlisle Energy Services Inc., (CES) a wholly owned subsidiary of Carlisle Construction Materials Inc., has introduced its Spectro PowerCap landfill closure system: a dual-purpose system that provides environmental protection while generating clean, solar electricity, according to a press release fr…

Report from GMA’s Lobby Days

April 1, 2010 | News

By Andrew Aho GMA members were in Washington, D.C., March 1-3 for the association’s semiannual Lobby Days. GMA has consistent representation in Washington through our contracted firms, Kemp Partners/Whitmer & Worrall. But to reinforce GMA’s message on Capitol Hill, twice a year GMA-m…

Announcing Geo-Frontiers 2011

April 1, 2010 | News

The Geo-Institute of ASCE, the Industrial Fabrics Association International (IFAI) and the Geosynthetic Materials Association (GMA), the North American Geosynthetics Society (NAGS) join forces to present Geo-Frontiers 2011 at the Sheraton Dallas Hotel. The conference is conducted under the auspices …

L.A. may require stormwater capture

April 1, 2010 | News

A proposed city ordinance would require residential and commercial developments in Los Angeles to capture and reuse runoff generated in rainstorms. The proposal was originally approved in January by the city’s Department of Public Works. It would require such projects to capture and reuse 100%…

Delaware students win 2010 GeoChallenge

April 1, 2010 | News

Compiled and edited by Ron Bygness The team of civil engineering students from the University of Delaware emerged from a strong field to win the 5th annual GeoChallenge Student Competition Feb. 23, 2010. The event was conducted during the American Society of Civil Engineers’ annual GeoCongress…

Residents want geotextile tubes for beach protection

April 1, 2010 | News

Compiled and edited by Ron Bygness Australian residents near the New South Wales mid-north coast area of Taree have very personal and vested interests in the Old Bar erosion issue. Many say they intend to retire there on the beachfront location midway between Sydney and Brisbane. That is, if the res…

Optimum height for geotextile storage

April 1, 2010 | Products

From the GMA Techline Subject: Optimum height? ASTM D4873 covers the identification, storage, and handling of geotextiles. However, there is no guide on what the optimum height should be for stacking rolls of material. This is often covered by statements to the effect that this should be “spec…

Questions about GM/GCL composite liners

April 1, 2010 | Q&A: GMA Techline

From the GMA Techline Subject: 3 questions How do I approach designing/specifying GM/GCL composite liners for MSW landfills? Do I simply adopt the GM13 standard, which is based on fundamental research, and then double-check that the leachate leakage rate is within acceptable limits for my specific p…

Testing HDPE geomembrane liners

April 1, 2010 | Products

From the GMA Techline Subject: Testing We prepared specifications for [a landfill] liner section that included parameters for nondestructive testing of the primary (80-mil) and secondary (60-mil) HDPE geomembrane liner. At this time, there is a need to install a 30-mil liner along the sideslope. It …

Veneer stability

April 1, 2010 | Q&A: GMA Techline

From the GMA Techline Subject: Veneer stability I have a question about veneer stability in moving earth upslope vs. downslope. In the downslope equations in GRI18, how is the lack of a buttressed passive wedge accounted for in the factor of safety (FS) equations during placement of soil? I think I …