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

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

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Cutting edge topics presented by industry experts & scholars.

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View Our August 6th Recorded Webinar CCR Policy & Regulations

The Story Behind Coal Combustion Residual Surface Impoundment
Presented by Harold D. Register, Jr., P.E. of Consumers Engergy & Andrew Bittner, P.E. of Gradient

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Education - Research - Technology Transfer

FGI is committed to these objectives. Click below to learn more about our Mission

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New: Design and Installation Detail Drawings

Details available for constructing a containment facility including pipe boots, concrete attachments, penetrations, and vent details.  Both PDF and DWG available.

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Geomembrane Test Method Videos Now Available

FGI has created videos on the following Test Methods:

ASTM D5994 Thickness (Textured), D5119 Procedure B Thickness (Smooth), ASTM D7408 Seam Peel Strength, ASTM D882 Tensile Properties & D7408 Seam Shear Strength, ASTM D1204 Dimensional Stability, ASTM D1790 Brittleness Temperature

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We are a non-profit organization providing education, research, and support for the flexible and fabricated geomembrane industry.

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TECH CORNER

Ask the expert...

Tim Stark, Ph.D., P.E., D.GE., F.ASCE

FGI TECHNICAL DIRECTOR

Review our FAQs and you still have a question, please CONTACT US & Tim will get back to you as soon as possible...

Geomembrane Guide

An interactive list of geomembrane products for various applications. Read more

The FGI Equipment Guide

An interactive list of welding equipment and products for
fabricated geomembranes. Read more

The FGI Pond Leakage Calculator
Geomembranes v. Compacted Clay Liners

Fresh water is a precious resource with demands rising daily and supply greatly fluctuating. Only two (2) percent of all water on Earth is fresh water with the other 98% being salt water.  This 2% of fresh water is comprised of: 87% ice, 12% groundwater, and 1% rivers and lakes.  Thus, only 13% of the available freshwater is readily accessible.  Therefore, it is imperative that we capture and hold these limited water resources for agriculture, domestic use, and industry and also protect valuable groundwater from surface or subsurface contamination.

The FGI’s Pond Leakage Calculator is a Microsoft EXCEL spreadsheet based on Darcy's Law of Seepage and provides a comparison between leakage rates from a canal, pond, or reservoir constructed with compacted fine-grained soils and a geomembrane liner system. The Leakage Calculator allows the user to input the size of the containment basin (including length, width, depth, side slope angle and freeboard), the anticipated level of hydraulic conductivity of the compacted soil or geomembrane liner, and the relative cost of water in dollars per acre-foot of water.

The Calculator then calculates the volume of the basin in gallons, a comparison of leakage rates between the compacted soil and geomembrane liner systems in gallons, and the cost of the leakage based on the cost of water per acre-foot to replace it. This Calculator is designed to help consultants, engineers, architects, and end users decide how to line their canals, ponds, reservoirs, and basins to capture and/or protect valuable fresh water.  The Calculator does not consider variances in construction quality and operational techniques on the long-term effectiveness of the chosen liner system. The FGI has additional research and publications to help with other aspects of successful water containment applications.

Types of Geomembranes
Four (4) popular types of geomembranes are available for pond liner systems.  These four (4) geomembranes in ALPHABETICAL order are: (1) EPDM, (2) reinforced polyethylene (RPE), (3) Polypropylene (PP), and (4) Polyvinyl Chloride (PVC). EPDM (Ethylene Propylene Diene Monomer) geomembranes are unreinforced and have been used for the construction of ponds of varying kinds. EPDM geomembranes are made from rubber and can be welded together with tape and primer. EPDM can be reinforced or unreinforced.  RPE geomembranes have a high tensile strength and puncture resistance because they are reinforced. RPE geomembranes also can be welded with heat.  PP geomembranes can be unreinforced or reinforced depending on the application. Reinforced PP geomembranes also have a high tensile strength and puncture resistance because they are reinforced. PVC geomembranes are also unreinforced and have been used successfully for decades in water canals, ponds, and reservoirs. PVC geomembranes can be welded with heat and/or solvents.

Please click below to access FGI’s Pond Leakage Calculator.
 Calculator
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TO VIEW THE LATEST FGI WEBINAR

CCR Policy & Regulations - The Story Behind CCR Surface Impoundment
Presented by Harold D. Register, Jr., P.E. of Consumers Engergy & Andrew Bittner, P.E. of Gradient
Recorded on August 6th, 2019
VIEW ALL RECORDED WEBINARS

News

FGI Webinar:  Temporary Landfill Covers - Design & Construction

September 10, 2019 12:00 p.m. - 1:00 p.m. CDT

Free to Industry Professionals & Students

1.0 PDH Available

This webinar will focus primarily on Prefabricated Landfill Covers and associated ballast systems. More specifically, it will provide a brief introduction into the geomembrane fabrication and installation processes, typical applications where these covers are used, how they perform, as well as considerations for material selection, project designs and construction techniques. Lastly, the presentation will review specific case studies throughout the United States to highlight these cover systems and designs.

Register for FREE today: https://attendee.gotowebinar.com/register/9200528983946286859

FGI Creates FREE Online PDH Credit Program

Earn PDH Credits Online

The FGI has created a program that will offer engineers one (1.0) Professional Development Hour (PDH) of credit for each FGI webinar that is viewed from the FGI Online Webinar Library. The FGI currently has thirteen (13) webinars in its online library and is offering an additional four (4) live webinars this year: CCR Regulations and Policy (August 6), Temporary Landfill Covers (September 10), Lightweight Aggregate (October 15), and Geomembrane Wrinkles (November 12). A PDH certificate will be issued to anyone who attends a live webinar or views a pre-recorded webinar in its entirety. Each live webinar will be added to the FGI's online library after the initial airing date.  

For more information or to view the list of webinars, please visit:  www.fabricatedgeomembrane.com/resources/webinar-gallery  

To learn more/register for the August 6, 2019 webinar on CCR Policy and Regulations, please visit: https://register.gotowebinar.com/register/4561903830197164300

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Resources

Pond Leakage Calculator

Use our Excel calculator to learn what measurements are needed to properly plan for your pond liner project.

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FAQs

Frequently asked questions from members, customers and industry professionals answered.

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Specifications & Guides

FGI, ASTM and IAGI material specifications in one place for your reference and convenience

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Geomembrane Guide

A comprehensive guide to industry and our member material offerings for fabricated geomembranes.

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