Strata, Allan Block in new marketing agreement

October 25, 2010

In a move described as “making proper landscape retaining wall construction even easier and more accessible,” Allan Block Co. of Minneapolis and Strata Systems of Atlanta have reached “a cooperative marketing agreement,” according to an Oct. 25 press release. The new plan calls for marketing and promotion of Strata’s geogrid reinforcement as part of Allan …

GMA delivers more comments to EPA regarding coal-ash deliberations

October 18, 2010

September 29, 2010 Mr. Steven Souders Office of Resource Conservation and Recovery United States Environmental Protection Agency 5304P Washington, DC 20460 40 CFR Parts 257, 261, 264 et al. Hazardous and Solid Waste Management System; Identification and Listing of Special Wastes; Disposal of Coal Combustion Residuals From Electric Utilities; Proposed Rule Docket ID No. EPA-HQ-RCRA-2009-0640 …

GRS bridges debut in N.Y.

October 15, 2010

Geosynthetically reinforced soil bridge abutments—engineering methodologies pioneered under the auspices of the Federal Highway Administration (FHWA) and prominently featured several times in Geosynthetics magazine—have been built for the first time in the Empire State. The St. Lawrence (N.Y.) County Highway Department’s use of the innovative bridge-building method has caught the attention of FHWA officials. The …

Leister acquires Concord Geotech

October 13, 2010

Concord Geotechnical (USA) has announced its recent acquisition by Leister Process Technologies (Switzerland). An Oct. 12 press release stated that Concord and Leister have joined forces to bring a combination of manufacturing and innovation to the plastic welding industry. The release, written as “an open letter to the geosynthetics industry,” was signed by Concord’s managing …

Sediment: It’s in the bag

Construction activities in watery environments can stir up sediments that release stored pollutants; clog waterways; and are expensive to store, treat, or remove. Blue Boar Contracts from Midlands, England, had a national dredging contract with British Waterways to deepen canals and extract tons of sediment slurry for removal. The company called on Sedi-filter, a dewatering …

Huesker’s Incomat system helps to cross the Ruhr

October 11, 2010

Installation of a double-pipeline for water conveyance across the Ruhr River in Germany was completed last year with the help of a sheathing of Incomat, an industrial woven synthetic material manufactured by Huesker, according to a press release from the company. The tailor-made “jackets,” produced to encompass the two steel water pipes, were made from …

O’Malley departs Propex

October 8, 2010

Paul O’Malley, national sales manager at Propex Geosynthetics, has resigned. In an Oct. 8 e-mail, O’Malley wrote: “I would like to take this opportunity to say goodbye and thank you. After nearly 10 years, I am leaving Propex to pursue other interests. My tenure here has been tremendously rewarding and I owe that to you.” …

Seaman names co-presidents

Wooster, Ohio-based Seaman Corp., maker of XR Technology geomembranes, has issued a press release announcing a new management, organization and leadership structure that includes Alex Williamson and John Crum as co-presidents. Both were promoted to executive vice president a year ago as part of a two-year succession plan. Richard N. Seaman, now assumes the titles …

Is it magic? author offers more insight

October 1, 2010

Editor’s Note: The issue of dormant reinforcement due to apparent cohesion was described in “Geosynthetic reinforced walls and slopes: Is it magic?” by Prof. Dov Leshchinsky, Geosynthetics, June/July 2010. Among the many responses to this article was a relevant question about the new “K-stiffness method.” Inquiry RE: Requested information for implementation of the K-stiffness method …

Examples of paradigm confusion in the June/July 2010 issue of Geosynthetics

To the editor: “Magic” is an appropriate description where the two significant elements of very different properties are combined to produce a unique composite stronger than either element. Concrete and asphaltic concrete are two examples of “unique composites.” Unique composites exhibit behaviors that exceed the sum of the constituents and cannot be accurately modeled using …