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Geosynthetic grain pile cover system secures grain storage
February 2nd, 2022
Raven Engineered Films' advanced geosynthetic grain pile cover strapping system secures covers, providing long-lasting protection against wind and weather. Custom-fabricated to fit piles of any shape and size, Raven Engineered Films’ DuraCinch Strapping System is designed to secure grain covers in extreme elements, providing greater and longer-lasting protection for major grain pile storage. Photograph courtesy […]
GMA Lobby Day comes at ‘really . . . strange, crazy time’
February 1st, 2022
L to R: Keith Misukanis, Berry Global; Fred Chuck, GMA; Rep. Dustin “Dusty” Johnson, R-S.D.; Sachin Mandavkar, Maccaferri Inc.; Adam Maskal, Solmax. Photograph by Gabe Pellathy, Principal, Whitmer & Worrall That’s how Martin Whitmer Jr., founding partner with Whitmer & Worrall LLC, described the timing (Oct. 19–20, 2021) of GMA fall Lobby Day 2021, the […]
Profitable geosynthetics companies in 2022?
February 1st, 2022
Before the New Year, in October and November 2021, the first two in-person geosynthetics industry events since the pandemic began took place: the Geosynthetic Materials Association (GMA) fall Lobby Day in Washington, D.C., and GeoNashville 2021. Both were well attended, and many participants were energized by the opportunity to meet with colleagues face-to-face for the […]
GeoNashville 2021 is a success
February 1st, 2022
Silas C. Nichols, P.E., principal geotechnical engineer with the Federal Highway Administration (FHWA) Office of Infrastructure, speaks about “Transforming Transportation Geotechnics with Geosynthetics" at GeoNashville. Photograph courtesy of Mark Skalny/Mark Skalny Photography Geosynthetics professionals from across North America gathered in Nashville, Tenn., in November as the industry returned to in-person events. GeoNashville 2021, Nov. 4–5, […]
Geosynthetic Materials Association new and renewing members as of February 2022
February 1st, 2022
To learn more about Geosynthetics Materials Association (GMA) member companies and other IFAI members, visit the IFAI member directory. Industrial Fabrics Inc. Baton Rouge, La.Construction products and engineering solutions Nedia Enterprises Inc. Ashburn, Va.Construction fabrics and erosion control products Synteen Technical Fabrics Inc. Lancaster, S.C.Manufacturer of geogrids and geotextiles
Geotextile filtration clogging resistance
February 1st, 2022
Q: I have a question about the Filter Criteria in the Federal Highway Administration (FHWA) procedure "Filter Performance and Design for Highway Drains" procedure, specifically the geotextile filtration clogging resistance equation 2-10. This seems to require a particularly large pore size; for example, if the D15 of the soil was for 70 microns, the minimum […]
Sewn versus welded seams
February 1st, 2022
Q: On your GMA Techline website list of sample questions and answers, a question is asked about a recommendation for sewn versus welded seams for geotextiles. Bob Koerner answered this question by stating that you have done a study for joining geosynthetic clay liner (GCL) overlap seams via eight methods. Can you share that study […]
EPDM geomembrane for a water application
February 1st, 2022
Q: We are looking at a life-cycle study for the usefulness of an ethylene propylene diene monomer (EPDM) geomembrane for a water conservation application. Request to kindly share the information for our study. Regards. A: An EPDM geomembrane is going to lie flat on the subgrade soil without wrinkles (no field-induced stress). Therefore, it will […]
Geosynthetics for pipe wrapping
February 1st, 2022
Q: I need impervious geosynthetics for pipe wrapping that will be placed within heavy clay. Do you have any suggestions? A: One wraps nonpolymeric pipes for many reasons. Below are some examples: Insulation (sound and thermal)Corrosion protectionWaterproofingImpact resistance Most wraps are tapes or mastics. Polyvinyl chloride (PVC), butyl rubber and bituminous wraps are common. A […]
Fusion-welded HDPE geomembrane patch
February 1st, 2022
Q: I need to make sure of what the minimum area is for a fusion-welded HDPE geomembrane patch with a 60-mil (1.5-mm) thickness that should be fusion welded instead of extrusion welded. Also, when does one need to replace a panel that is damaged (i.e., the percent of damage allowed to be repaired)? Thank you […]