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GSI to host webinar on hydraulic applications
April 17th, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar, “Geosynthetics in Hydraulic Applications,” on April 24, 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. By 2040 it is estimated that two billion people (25% of the world’s […]
MSE wall failures can be mitigated through the use of geotextile filters
April 1st, 2019
For the past 17 years, the Geosynthetic Institute (GSI) has been accumulating data on failures of geosynthetic reinforced mechanically stabilized earth (MSE) retaining walls. We presently have 320 cases, of which 201 (63%) have been caused in whole or part by water within, or adjacent to, the reinforced soil zone. We sincerely hope that our […]
The GMA Techline
April 1st, 2019
Vegetation causing gases under geomembrane? Q: I have a site where we are installing a high-density polyethylene (HDPE) liner in an existing pond. Because of some residual heavy metals in the top layer of soil, I would like to strip off the top 3–6 inches (7.6–15.2 cm) of soil and vegetation. Alternatively, we could mow and […]
GSI to host webinar on geotextile filters
March 27th, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar, “Geotextile Filters: Concerns and Issues,” on April 10, 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. It is roughly estimated that geotextiles have been used in more than […]
GSI to host webinar on MSE inspection
March 15th, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar, “Mechanically Stabilized Earth (MSE) Wall, Berm and Slope Construction Inspection,” on March 20, 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 inspection (aka monitoring) of MSE wall, […]
GSI to host webinar on MSE remediation and monitoring
February 28th, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar “MSE Wall Remediation and Monitoring,” on March 6, from 11:30 a.m. to 1 p.m. EST. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. The GSI database of failed MSE walls indicates that 44 out of […]
GSI to host webinar on back drainage design of MSE walls
February 5th, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar “MSE Wall: Back Drainage Design,” on Feb. 20, from 11:30 a.m. to 1 p.m. EST. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. Within GSI’s database of 320 failed mechanically stabilized earth (MSE) walls reinforced […]
The GMA Techline
February 1st, 2019
Geomembranes for canal lining Q: Our company is an international member of the Industrial Fabrics Association International (IFAI). Our government is planning to line their water canals with a geomembrane to prevent water seepage into the soil. We have been approached by many to suggest the most suitable material with specifications to guide them in […]
Changing the ‘one per 500 feet’ paradigm on geomembrane field seam sampling
February 1st, 2019
The late Henry Haxo Jr., Ph.D., former president of Matrecon Inc., deserves considerable credit for developing many of the concepts and practices involved in waste containment liner and cover systems. Beginning in the 1970s, various projects, many of them funded by the U.S. Environmental Protection Agency (EPA), were actively researched. His capstone document is the […]
Christopher honored with 2018 Koerner award and lecture series
February 1st, 2019
The Geosynthetic Materials Association (GMA), led by a Koerner awardee selection task force, chose Barry R. Christopher, Ph.D., P.E., as the recipient of the 2018 Robert M. Koerner Award and Lecture Series. The award and lecture series is named for Robert M. Koerner, Ph.D., the founder and director emeritus of the Geosynthetic Institute and professor […]