GMA News: GMA had a jam-packed start to the year

June 1, 2018  |  GMA News

In January 2018 members of the Geosynthetic Materials Association (GMA) participated in the Transportation Research Board (TRB) Annual Meeting in Washington, D.C. In February our executive council met in Charlotte, North Carolina, to review GMA’s goals and mission. In March a delegation of GMA exe…
Estimating live loads in MSE wall and slope design

June 1, 2018  |  GSI News

In formulating a factor-of-safety value for a mechanically stabilized earth (MSE) wall or slope project, a design engineer calculates a ratio of resisting forces to driving forces. This contrast is further recognized when using load and resistance factor design (LRFD), which is in our not-too-distan…
GeoDallas Watch: 2018 GeoDallas schedule announced

June 1, 2018  |  News

June World Environmental & Water Resources Congress June 3–7 | Minneapolis, Minn. Hosted by the Environmental & Water Resources Institute (EWRI) of the American Society of Civil Engineers (ASCE), the World Environmental & Water Resources Congress brings together the top environmental a…
Presto releases geocell ballast research

June 1, 2018  |  News

Presto Geosystems, manufacturer of the high-density polyurethane (HDPE) GEOWEB® geocell base stabilization system, has released results from railroad-track research performed to quantify the reinforcement benefit of GEOWEB-confined ballast as compared to unconfined ballast. The company said the res…
Geogrid study initiative wins Center for Transportation Research Award

June 1, 2018  |  News

The University of Minnesota Center for Transportation Studies (CTS) selected Tensar International and its research partners as the winners of the 2018 CTS Research Partnership Award for their work on geogrid usage in paved-road infrastructure. The award recognizes a new pavement design and analysis …
Monitoring the performance of Louisiana’s first GRS–IBS bridge

June 1, 2018  |  Feature

Over the decades, soil mass reinforced by layers of geosynthetics has been used widely and successfully in a variety of earth structures, such as mechanically stabilized earth (MSE) retaining walls, embankments, slopes and shallow foundations. Due to the proven benefits of geosynthetic reinforced so…
Springtime failure of a cold-climate geotextile riprap slope

June 1, 2018  |  Feature

Geotextiles play an essential role in geotechnical projects. A significant use for geotextiles is as a separator and filter in drainage and erosion control applications (Holtz 2002). A temporary erosion control application geotextile, such as silt fencing, is used to prevent soil erosion by containi…
Highway deep-patch geogrid applications

June 1, 2018  |  Feature

Deep patch is a repair technique that has been widely used on low-volume roads in the Pacific Northwest as a cost-effective mitigation technique to address settlement and shallow landsliding of side-cast embankment fill slopes and natural slopes consisting of weak soils overlying stronger soils (Cue…
WisDOT publishes study on geotextile puncture test methods

June 1, 2018  |  News

The Wisconsin Department of Transportation (WisDOT) and the Federal Highway Administration (FHWA) funded research into puncture test methods for geotextiles, and the report from this study is now available online. Various tests are conducted to assess and classify a geotextile’s suitability for di…
Final inspection: GRS–IBS bridge in place in 80 hours

June 1, 2018  |  Final Inspection

The Rhode Island Department of Transportation (RIDOT) began work on the McCormick Quarry Bridge over Warren Avenue in East Providence on Sept. 23, 2016, using a geosynthetic reinforced soil–integrated bridge system (GRS–IBS). According to the Federal Highway Administration and RIDOT, the techniq…