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Recap of the 2017 Geotechnical Frontiers conference
June 1st, 2017
More than 2,100 attendees and some 200 exhibitors flocked to the Hyatt Regency Orlando Hotel in Florida, March 12–15, 2017, for the jointly sponsored Geotechnical Frontiers conference. A major event in the geosynthetics world, the once-every-six-years conference unites the Geosynthetics Conference of the Industrial Fabrics Association International (IFAI) and its division, the Geosynthetics Materials Association […]
Geosynthetics Institute News
June 1st, 2017
Robert M. Koerner on his namesake award and lecture series On March 14, 2017, at the Geotechnical Frontiers conference in Orlando, Fla., George Koerner graciously accepted the Robert M. Koerner Award and Lecture Series. The biennial award and lecture series were established by the Geosynthetic Materials Association (GMA) Executive Council; Koerner was the first recipient. […]
Questions and answers from the GMA Techline
February 1st, 2017
Spraying? Shear Strength? Hydraulics? [A more] non-permeable GT? Q: I have received an inquiry for a non-permeable geotextile, which is UV-resistant and will be installed on a long slope for erosion control. Could you kindly recommend a product that would meet these requirements or a solution for this application? Your assistance with this is much […]
Devoted to geosynthetics for the long haul
October 1st, 2016
Bob Koerner has devoted more than 40 years of his life to the advancement of geosynthetics, and he’s still pushing the industry forward. Introduction When Dr. Robert M. Koerner talks about geosynthetics, the cadence of his speech quickens and the passion behind his words suggests that geotextiles, geomembranes, geosynthetic clay liners and geogrids (to name […]
New geotextiles book to debut in March
February 3rd, 2016
A hefty new addition to civil engineering and geosynthetics libraries around the world is coming next month. Geotextiles: From Design to Applications is scheduled for official release in March 2016. Number 175 from the Woodhead Publishing Series in Textiles, the 640-page book contains 26 chapters by 39 authors, including many of the most- renowned and […]
Geocomposite drainage layers
October 1st, 2015
Flammability? Zip ties? MARV? Ponds? GT specs? Questions and answers from the GMA Techline. I wonder about your opinion on the use of a triplanar geocomposite for landfill drainage layer. We have not approved these in our jurisdiction to date. I have a current application where this is proposed to be used (vertical expansion). I […]
Saturated soil cover on liner question
October 1st, 2015
Questions and answers from the GMA Techline. I need your advice on a reservoir we are designing. It is an irrigation reservoir with a 40-mil HDPE geomembrane liner on a 3:1 slope. The client wants to cover the liner with 1ft of silt loam soil. The water elevation in the reservoir will fluctuate about 15ft […]
Geotextile data
October 1st, 2015
Flammability? Zip ties? MARV? Ponds? GT specs? Questions and answers from the GMA Techline. I am a student of hydraulic structures and I need some data about transmissivity of geotextiles (ASTM D4716 or ISO/DIS 12958); and also permittivity or cross-plane permeability (ASTM D5493 or every valid standard). My thesis is about transmissivity and permittivity of […]
Protrusion/particle shape—geotextile cushions
October 1st, 2015
Flammability? Zip ties? MARV? Ponds? GT specs? Questions and answers from the GMT Techline. Our landfill liner project specifications require the use of rounded to subangular gravel to be placed as a leachate drainage layer or leachate collection pipe bedding. The gravel is separated from the geomembrane liner by a nonwoven geotextile cushion. During bidding, […]
Zip-tie strength
October 1st, 2015
Flammability? Zip ties? MARV? Ponds? GT specs? Questions and answers from the GMA Techline. We had a problem at one of the construction projects where we were providing CQA. It turned out that the installer had two different types (and apparently strengths) of zip ties. There ended up being seam failures in some of the […]