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GSI to host webinar on stability designs of landfill cover soils
October 15th, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar, “Stability Designs of Landfill Cover Soils,” on Oct. 23, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. This webinar focuses on the stability design of relatively thin soil […]
A forty-year anniversary for the first hardbound book on geosynthetics
October 1st, 2019
By Robert M. Koerner In the late 1970s, I regularly invited speakers to make presentations to my geotechnical engineering classes at Drexel University. Two of them were very memorable: Bill Ragen of Mirafi and Bill Witherow of Carlisle. Their respective topics were “filter fabrics” and “pond liners,” and in truth I didn’t associate them with […]
GSI to host webinar on stabilization of soil slopes with anchored geosynthetics
September 23rd, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar, “In-Situ Stabilization of Soil Slopes Using Nailed or Anchored Geosynthetics,” on Oct. 9, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. The sliding of soil slopes in the […]
GSI to host webinar on geosynthetics and major applications
August 16th, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar, “A Brief Overview of Geosynthetics and Their Major Applications,” on Sept. 11, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. Geosynthetic materials presently represent an $8 billion worldwide […]
The GMA Techline
August 1st, 2019
Moderated by Robert M. Koerner, George R. Koerner and Y. “Grace” Hsuan A geotextile for unpaved driveway/road? Q: Is there any point in using a 150 g/m2 (4.4 oz/yd2) nonwoven geotextile in building an unpaved gravel driveway or gravel road? If so, what should be the most important characteristics of the fabric and what are […]
Commentary on flood abatement using geosynthetics
August 1st, 2019
By Robert M. and George R. Koerner Figure 1a: Geosynthetic reinforced steep soil slopes (courtesy W. Hsieh On Sept. 8, 1900, a Category 4 hurricane struck Galveston, Texas, which is situated on the Gulf of Mexico about 8 feet (2.4 m) above sea level. The storm created a 15-foot (4.6-m) storm surge, killing 8,000 to […]
GSI short course on MSE walls, berms and slopes now available on demand
June 17th, 2019
The Geosynthetic Institute (GSI) is sponsoring an online course, “Course 2: Construction Inspection of Mechanically Stabilized Earth (MSE) Walls, Berms and Slopes,” available anytime on the GSI website. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. This online course is focused on the […]
The GMA Techline
June 1st, 2019
Who is doing the testing? Q: This question relates to the number of rolls to be selected as the lot sample for specification conformance testing and refers to ASTM D4354. When I look at this standard, it appears the values in Table 1 of GRI’s White Paper #10 refer to the number of units to […]
Reflections on sustainability with respect to geosynthetic materials
June 1st, 2019
By Robert M. and George R. Koerner Listening to and reading the news, there seems to be regular criticism of all plastics insofar as concerns as to their post-use disposal in light of their exceedingly long lifetimes. Rarely, if ever, is the distinction made as to which plastics are really necessary to society and which […]
GSI to host webinar on geotextile tubes
May 29th, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar, “Applications and Design of Geotextile Tubes,” on June 12, from 11:30 a.m. to 1 p.m. EDT. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. Geotextile tubes are large factory-fabricated textile tubes with multiple access ports […]