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GSI’s Robert M. Koerner to host webinar on geotextile filters

Products | June 23, 2018 | By:

The Geosynthetic Institute (GSI) will sponsor a webinar entitled “Geotextile Filters: Concerns and Issues,” on July 11, 2018, from 11:30 a.m. to 1 p.m. EDT. The webinar will be hosted by Dr. Robert M. Koerner. This is the first GSI webinar for which all GMA member companies and their employees will receive discounted rates on webinar registration.

It is estimated that geotextiles have been used in more than 500,000 filtration applications to date. Improper performance is rare, and in GSI’s database of field problems, there are only 82 published or known cases (~ 0.016%). Yet, these are important to recognize in the context of lessons learned so as not to be repeated.

The webinar will focus on geotextile filter case histories grouped in the categories of design problems, issues involving anomalous soils, failures linked to atypical permeants and geotextile filter installation errors. The webinar will be generously illustrated with cross-sections of specific situations as well as photographs of significance.

Participants will learn the three concepts of geotextile filtration design using a series of gradually sophisticated methods. All 82 field case histories will be explained in this context. The webinar will illustrate not only problems but also clear explanations for what occurred. The reasons for many situations become obvious with hindsight.

This webinar will be beneficial for transportation, geotechnical, geoenvironmental and hydraulic design engineers; owners, regulators and permitters of systems that include the necessity of soil or geotextile filtration; contractors installing geotextile filters; and geotextile manufacturers.

The webinar’s instructor, Dr. Koerner, is professor emeritus of civil engineering at Drexel University and director emeritus of the Geosynthetic Institute.

Webinars cost $200.00 for GSI and Geosynthetic Materials Association (GMA) members, and $250.00 for nonmembers. Successful completion of a multiple-choice test after the webinar carries 1.5 professional development units.

For more information or to register, visit


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