Dedicated to advancing the use of fabricated geomembranes through education, research, and technology transfer.

Factory fabrication reduces field welding, reduces installation time and costs, allows modular construction and provides consistent seam and liner quality.


FGI Creates Geomembrane Defect Leakage Calculator

GM Defect Leakage Calculator

This calculator estimates the leakage through geomembranes and composite liners with and without geomembrane defects/holes. The calculator illustrates the importance of intimate contact between the geomembrane and compacted subgrade or soil liner via different levels of contact.  The effect of wrinkles on leakage rates is also quantified using a database of wrinkle dimensions for a number of common geomembranes, which shows the presence of wrinkles can significantly increase leakage rates.

To view/download all of the FGI Calculators, please click HERE.

Geo-Engineering Podcast Series by the FGI!!!

Listen Now

Listen Today at

Join Tim Stark (Professor of Civil Engineering) and Jen Miller (Coordinator of the FGI) as they discuss the latest emerging geosynthetic industry trends and news with leading industry experts. Topics of podcasts include a wide range of geotechnical and geosythetic related applications, such as: Yeager Airport RSS Failure Case History, Drainage Geocomposites, Post Closure Care of Landfills, Leak Location Surveys, Air Channel Seam Testing, Pond Leakage Calculators, and many more!!

Tune in Today. Podcasts are available to download from the FGI Website or from the following online streaming services: Spotify, Apple Podcasts, Anchor FM, Breaker, Pocket Casts, RadioPublic, & Google Podcasts.

FGI Offering Webinar on Airport Reinforced Soil Slope Failure

Yeager Airport RSS Failure Case History - Thursday, August 20, 2020 at 11 a.m. CDT

Construction of this 67 meter high reinforced soil slope (RSS) was completed in December 2006. After seven years in-service, a tension crack was observed at the top of the slope. In March 2015 this RSS structure catastrophically collapsed. This RSS structure collapsed in a compound failure mode; as the failure plane passed beneath, partially behind, and partially through the reinforced soil mass. The RSS collapse occurred after 8.3 years in-service as the shear strength along the shale-claystone foundation interface decreased and approached the fully softened strength. This webinar will cover the forensic investigation performed, the causes of the failure and lessons learned.


Jim Collin, Ph.D., P.E., D.GE., F.ASCE

Ryan Berg, D.GE., P.E., F.ASCE

To register for this FREE webinar, please click here

FGI Summer Newsletter Now Available

Download Here

Check out all of the latest events, news, and industry happenings.

FGI Offering LIVE Virtual Panel Discussion Webinar

FGI Webinar: Panel Discussion on Constructing with Fabricated Geosynthetics - Thursday, July 30, 2020 at Noon Central Time
Register Here

This first webinar Panel Discussion will assemble five (5) industry leaders to answer questions about design, specifying, factory testing, fabrication, welding, packaging, shipping, installing, field leak location testing, and maintaining factory fabricated geomembranes and geosynthetics, e.g., geotextiles, for a range of applications. The panelists will also discuss different labor rates, production per day, quality control, testing, weather impacts, wind, wrinkles and performing leak location surveys, etc. for factory fabricated versus field fabricated geosynthetics. This should result in a lively discussion about current trends in geomembranes, fabrication, testing, and installation.

Doug Hilts, P.E. (Hilts Consulting Group)
Patrick Elliott (Raven Industries)
Ronald Frobel, P.E., (R.K. Frobel & Assoc)
Dan Rohe (EPI)
Duff Simbeck (Simbeck & Associates)
Moderator: Timothy Stark, Ph.D., P.E. (Univ of Illinois at Urbana-Champaign)

Register For Webinar

Free to Industry Professionals and Students

1.0 PDH

FGI Welcomes New Member: Tennessee Department of Environment and Conservation, Division of Solid Waste Management

The Fabricated Geomembrane Institute (FGI) is pleased to welcome its newest Government/Regulatory Agency Member, Tennessee Department of Environment and Conservation, Division of Solid Waste Management.  

The mission of the Division of Solid Waste Management (DSWM) is to protect, improve, and promote health and environmental quality through the responsive, effective oversight of waste management activities and the beneficial use of recovered materials.  Solid waste may be defined as any useless,unused, unwanted, or discarded materials. Hazardous waste, problem waste, toxic substances, and recyclables may be distinguished from other solid waste. DSWM has established focused programs to address each of these.  The Solid Waste Program ensures safe and sanitary processing and disposal of solid waste in Tennessee.  It regulates material recovery facilities, transfer stations,and landfills for sanitary or municipal solid waste, industrial waste, farming wastes, and construction and demolition waste, some of which are subject to EPA RCRA Subtitle D.  The Solid Waste Program operates under the authority of the Solid Waste Management Act of 1991.

The FGI liaison is Reese Yontz, who can be reached at  Please help us welcome the Tennessee Department of Environment and Conservation, Division of Solid Waste Management to the FGI!!!!

FGI Creates Video Podcast Series

In addition to the FGI’s Audio Podcast Series, the FGI has now created a series of Video Podcasts.  The video podcasts are approximately 10-20 minutes long and demonstrate a technical aspect of the geosynthetics industry. For example, two video podcasts cover the FGI’s new Panel Weight Calculator and Pond Liner Calculator.  The videos review the purpose and usefulness of these calculators, as well as a tutorial on how to use them.  Another video podcast reviews a case history on a slope failure and features special guest, Doug Evans of the Ohio Department of Natural Resources.

All of the FGI’s Video podcasts can be downloaded for free from the FGI website HERE.    

If you have a topic for the FGI to address on a future audio or video podcast, please email Jen Miller at

FGI Newsletter - Spring 2020 Now Available

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Safety First

2020 Webinar Series

Women in Geo Round Table

New Videos on Pond Leakage and Panel Weight Calculators

New Podcasts: Geomembrane Nomenclature, Air Channel Testing, Stormwater Management, Secondary Containment

FGI Website Resources

FGI Welcomes Re-Gen Enterprises

The Fabricated Geomembrane Institute (FGI) is pleased to welcome its newest Associate Member, Re-Gen Enterprises. Re-Gen is a primary and secondary containment liner removal and recycling company, headquartered in Meridian, Idaho. Re-Gen is the industry leader for containment liner removal solutions that benefits the environment through recycling, time and cost savings due to proprietary equipment and processes, as well as enhancing current safety and environmental programs. Their FGI liaison is Mike Fallon, Director of Market Research and Development, who can be reached at Please help us welcome Re-Gen Enterprises to the FGI!!!!

FGI Members Provide Aid During COVID19 Pandemic

Several members of the Fabricated Geomembrane Instiute (FGI) have altered their plans and manufacturing facilities to provide much needed supplies to the medical community.  Please see a few examples of how these extraordinary companies are stepping up during the pandemic:

Plastatech Provides Medical Grade PVC Membrane for Masks and Gowns

Raven Industries Creates Medical PPE Gowns for Healthcare Workers

Cooley Group Manufactures Medical Products and Supplies

Intertape Polymer Group Makes Containment and Medical Supplies

Owens Corning Foundation plans to use most of its 2020 budget to help charities battling coronavirus in OC communities. The foundation is making grants to hospitals, food banks, homeless shelters, and other charities. Grants are in process or have already been sent to communities in Belgium, Canada, China, England, France, India, Italy, Spain, and the United States.