Avoiding geomembrane whales and hippos in surface impoundments

April 25, 2016

The incidence of geomembrane whales/hippos in surface impoundments containing various types of liquids is, unfortunately, not uncommon. See, for example, GSI White Paper #30, which discusses corrective actions after they occur. This article, however, addresses the situation before it occurs. Clearly, the presence of a geomembrane creates anomalies in the underlying subgrade that can cause …

ASTM Committee D35 on Geosynthetics

April 1, 2016

The ASTM Committee D35 on Geosynthetics conducted its 2016 winter meeting in San Antonio, Texas, Jan. 27–29, 2016. The first order of business was the installation of new officers and members-at-large: James Goddard, Committee D35 chairman Eli Cuelho, 1st vice-chairman Jimmy Youngblood, 2nd vice-chairman Gary Torosian, secretary Mark Wayne, membership chairman Tim Bauters, membership-at-large Richard …

New name, GeoAmericas, panel members sought

Name change proposed for NAGS In an effort to solidify efforts at providing leadership in advancing geosynthetics education and research, the NAGS Board of Directors earlier this year proposed changes to its bylaws. The society’s bylaws were last revised in February 2001. Immediate past-president Bob Mackey served as editor of the new bylaws that were …

State and local efforts, activities report, Lobby Day on GMA’s agenda

During my first year as a division supervisor, managing the Geosynthetic Materials Association, GMA has seen an increase in activity. GMA has been able to capitalize on its strong presence on Capitol Hill, by encouraging Congress to pass a long-term highway bill that included meaningful geosynthetic language. GMA has made significant efforts to cultivate relationships …

Send in your award-winners

The 69th annual International Achievement Awards (IAA) presented by the Industrial Fabrics Association International (IFAI) offers your company an opportunity to shine. Companies from around the world will compete in new categories in 2016 to showcase innovation, technical skills, and design excellence. This year, IFAI is changing the competition a little bit. Each of the …

2016 State of the Specialty Fabrics Industry

The U.S./Canada geosynthetics market includes geotextiles, geomembranes, geogrids, geosynthetic clay liners, drainage materials, geocells, and erosion control materials. In 2015, the size of the U.S./Canada geosynthetics market was $2.3 billion, up 4.5% over 2014. It is expected to swell to $2.4 billion in 2016, up 5% compared with 2015. In a survey of Geosynthetic Materials …

Training Lectures, Panel Discussions, Short Courses

The theme for Geotechnical Frontiers is “Innovation and Collaboration in Technology and Practice.” The conference will feature four days of technical programming, including short courses, panel discussions and technical paper presentations. New for 2017—Training Lectures Geosynthetic Reinforced Embankments on Soft Foundations INSTRUCTOR Bob Holtz, University of Washington Real-time Performance Monitoring for Excavations INSTRUCTOR W. Allen …

Part 2: Field evaluation of the performance of unpaved roads incorporating geosynthetics—Planning

Introduction Scope and terminology The mechanisms that govern unpaved road performance are complex. Therefore, it is legitimate to try to get quantitative data from laboratory and field tests, but test interpretation can be correct only if there is a good understanding of the mechanisms (which was the purpose of the Part 1 article), rigorous planning …

Pioneer Mountains Scenic Byway frost heave prevention and results

Abstract The Pioneer Mountains Scenic Byway, located about 30 miles (48km) west of Dillon, Mont., seasonally experiences frost heave problems over a 20-mile (30-km) stretch of road. The road is closed to winter traffic and typically re-opens in May. Longitudinal full-section depth cracks form during the spring thaw. One location, in the high alpine meadows …

Bridge building in Maine with GRS (geosynthetic-reinforced soil)

The challenge In 2013, the small town of North Haven on North Haven Island off the coast of Maine, began construction on a unique bridge project. The goal was to rebuild Beach Bridge, a deteriorating structure that provided access to a handful of seasonal homes and an important wharf for local lobstering as well as …