Geosynthetics magazine offers free sponsored webinar on natural facings for steep slopes and walls

October 9, 2018

Geosynthetics magazine will present the Tensar Corp.-sponsored webinar “Natural Facings for Better Performance and Value on Very Steep Slopes and Walls” on November 8 at 1:00 p.m. EST. This presentation will provide a case study example of how natural facings provide better performance and value on very steep slopes and walls. Steve Luptak, national product …

FHWA video features GRS–IBS history and construction techniques

October 5, 2018

A Federal Highway Administration (FHWA) YouTube video showcases the history and construction techniques of the geosynthetic reinforced soil–integrated bridge system (GRS–IBS). The video illustrates how to build a GRS–IBS. It is intended to educate designers, engineers, contractors and inspectors on the fundamentals of the GRS–IBS. The video follows the GRS–IBS Interim Implementation Guide (FHWA-HRT-11-026). The …

Two Fleischmann amendments related to geosynthetics included in final FAA reauthorization

Two amendments introduced by Rep. Chuck Fleischmann, R-Tenn., both related to geosynthetics, were included in the final Federal Aviation Administration (FAA) Reauthorization Act of 2019 that was approved by both the House and Senate and sent to the White House. The House passed the legislation in May, and the Senate passed it 93-6 earlier this week. …

Multilinear drainage geocomposites to filter oil sands tailing slurries

October 1, 2018

Mining and some energy operations generate large quantities of water-containing tailings. These tailings are made of crushed-rock particles that are deposited in a slurry form. This is the case for coal, tar sand, lead, zinc, gold, silver, copper, molybdenum, nickel, taconite (iron), phosphate, bauxite (aluminum oxide), uranium, trona (soda ash) and potash, for example. There …

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The GMA Techline

Toxicity of nonwovens? Q: Are there any comprehensive tests (or a general synopsis) of the environmental toxicity of leachate from nonwoven polypropylene fabrics when aged in a freshwater or saltwater solution? Regulatory and municipal bodies in Europe and New Zealand are requesting more info about products that are used in riparian and coastal environments. A: …

Automation of large-scale geotextile and geomembrane fabrication

The development of a large-scale fabrication machine was conceived during the fabrication of geotextiles for a tailings pond cap in 2010. The machine joins five strips of material at a time to create fabricated panels for large projects. It is capable of both welding geomembranes and sewing high-strength geotextiles. This machine was specifically designed to …

Geosynthetics opportunities and solutions in shale gas extraction

While natural gas contained within shale rock is geologic and thus ancient by its very nature, the practice of its removal by horizontal drilling coupled with hydrofracking is a relatively recent development (Figure 1). Indeed, these dual technologies are making possible the recovery of huge amounts of natural gas—so much so that one can envision …

Construction inspection of MSE walls, berms and slopes is focus of GSI online course

September 27, 2018

The Geosynthetic Institute (GSI) will host an online short course entitled “Course 2: Construction Inspection of Mechanically Stabilized Earth (MSE) Walls, Berms and Slopes,” Nov. 6–8, from 11 a.m. to 12:30 p.m. and from 2 p.m. to 3:30 p.m. EDT each day. Robert M. Koerner and George Koerner will teach the course. All Geosynthetic Materials …

Registration opens for 2019 IECA conference and expo

September 26, 2018

The International Erosion Control Association (IECA) has opened registration and published the full schedule for the 2019 IECA Annual Conference and Expo in Denver, Colo., Feb. 19–22. The 2019 IECA Annual Conference and Expo brings together the most innovative minds in the erosion, sediment control and stormwater industry. Attend this one-of-a-kind conference to connect with …

AASHTO elects new president, Workforce and funding are top priorities

September 25, 2018

The board of directors of the American Association of State Highway and Transportation Officials (AASHTO) elected Carlos Braceras P.E., executive director of the Utah Department of Transportation, to serve as its new president and Missouri DOT Director Patrick McKenna as its vice president. “I’m honored and inspired to accept the role of AASHTO president during …