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GSI Webinar – Applications and Design of Geotextile Tubes – September 7

GSI News, News, Webinars | August 25, 2022 | By:

The Geosynthetic Institute (GSI) will sponsor a webinar, “Applications and Design of Geotextile Tubes,” on September 7, 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 for introduction of the infilled material, which is generally dredged and in slurry form. Sand or gravel is used for erosion control, whereas soil fines and sludges are used for dewatering and/or decontamination. The tubes themselves have progressed up to 5 m in diameter and the applications have grown accordingly.

After an overview, a nine-part design procedure is presented which represents the current state-of-the-practice. It then proceeds with details of adding decontamination materials to the slurries for the purpose of properly handling contaminated river and harbor sediments. Several economic examples are presented. The summary will counterpoint the various applications against one another.

Learning objectives

Participants will learn the fabric manufacturing details, including testing, as well as design idiosyncrasies of geotextile tubes. The design has indeed progressed to where confidence of success is readily achieved. Current extensions into adding deflocculants to reduce “filter cake” formation and neutralizing hazardous constituents of fine-grained sludges will be explained accordingly.


1. Understand manufacturing details, including seams, of textile tubes

2. Understand the various applications for geotextile tubes

3. Learn details of the complete design process through nine separate items

4. Learn about chemical deflocculating materials

5. Learn about additives to neutralize contaminants

6. Counterpoint applications-to-design-to performance of this exciting field of geosynthetic engineering

Intended audiences

Public and private owners of locations subject to erosion, as well as contaminated harbor and riverbed sediments insofar as our hydraulic infrastructure is concerned.

Federal, state and regional hydraulic, geotechnical, and geoenvironmental engineers; engineers from municipal districts and townships; private and municipal land developers; general civil consulting engineers; testing laboratories servicing these organizations; manufacturers and representatives of geosynthetic materials; contractors and installers of geosynthetic materials; academic and research groups; and others desiring technically-related information on this important aspect of our hydraulic infrastructure.

Specific Topics

1. Concept and Background of Geotextile Tube

2. Various Applications

3. Design Considerations

3.1 Your Partner, The Dredger

3.2 Movement of Tubes

3.3 Tensile Strength of Fabrics

3.4 GeoCOP Computer Code

3.5 Fabric Strength

3.6 Tensile Strength of Seams

3.7 On-Site Performance Tests

3.8 Chemical Coagulants

3.9 Additional Design Details

4. Dewatering “plus” Decontamination

5. Summary and Recommendations

Webinars cost $200.00 for GSI and GMA members, and $250.00 for nonmembers. Successful completion of a multiple-choice test after the webinar carries 1.5 professional development hours (PDH). For more information or to register, visit the GSI webinar webpage.

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