World of coal ash

June 1, 2015  |  Editorial

What in the Wide, Wide World of Sports issa goin’ on here? —Slim Pickens as Taggart in “Blazing Saddles” By Ron Bygness I could not help recalling that memorable line from the classic Mel Brooks movie while I was first investigating an industry conference on the subject of coal ash. Truly, w…
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Gaining a better understanding of the porometer test (ASTM D6767)

June 1, 2015  |  News

By Bruce Lacina and Melissa Medlin 1. Introduction The ASTM international standard test method for pore size characteristics of geotextiles by capillary flow test provides a wealth of information about the physical makeup of the structure and pore spaces in a geotextile sample. This test is often re…
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Overlapping standardized test methods

June 1, 2015  |  News

GSI News By Bob & George Koerner It is generally recognized that generic test methods for all geosynthetic products are essential to manufacturing, design, permitting, specifying, and acceptance organizations to provide for a successful project at reasonable cost. Even further, it is desirable t…
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2014 International Achievement Awards: Fort Pierce City Marina

June 1, 2015  |  News

EDITOR’S NOTE Complete information regarding the parties and all Maccaferri solutions and products involved in the award-winning reconstruction of the Fort Pierce City Marina were not included in the original article. –R.B. In rebuilding the Fort Pierce City Marina, the storm protection breakwat…
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Stormwater detention pond

June 1, 2015  |  News, Q&A: GMA Techline

Geomembrane testing? Root penetration? Welding HDPE with LLDPE? Woven geopipe? Questions and answers from the GMA Techline We are designing a campus that has a pond for stormwater detention, as well as an architectural/aesthetic pond that is about an acre in area, 6 feet deep, sideslopes 4H:1V, and …
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Woven Geopipe?

June 1, 2015  |  News, Q&A: GMA Techline

Geomembrane testing? Root penetration? Welding HDPE with LLDPE? Woven geopipe? Questions and answers from the GMA Techline We hope you can give us contacts for some fabricators who could supply geosynthetic pipe or equal. We want to make woven pipe for water—sizes from 3 to 30 feet and pressures 1…
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Geosynthetics & Landfills 101

June 1, 2015  |  Case Studies

Erosion control challenges at solid waste facilities By Eric S. Steinhauser Introduction Landfills, particularly municipal solid waste (MSW) landfills, are often misunderstood. Commonly referred to as “dumps,” these highly engineered facilities, and the engineering project teams involved in thei…
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An approach to approaching zero leakage

June 1, 2015  |  Products

Panel Discussion: Geosynthetics 2015 Conference February 16, 2015 | Portland, Ore. Session moderator: Ian D. Peggs, I-Corp International Inc., USA Do liners leak? It is said that all liners leak, including geomembranes. They don’t. Double geomembrane liners do not leak into the subgrade. Or do the…
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Welding on the slope

June 1, 2015  |  News, Q&A: GMA Techline

Geomembrane testing? Root penetration? Welding HDPE with LLDPE? Woven geopipe? Questions and answers from the GMA Techline I have a colleague who is insisting that we build a pond’s embankment extension by welding new geomembrane to an old one on the “slight” slope (really somewhere 1:4 ratio)…
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Suction component to resist uplift?

June 1, 2015  |  News, Q&A: GMA Techline

Geomembrane testing? Root penetration? Welding HDPE with LLDPE? Woven geopipe? Questions and answers from the GMA Techline What about a reservoir geomembrane liner over a secondary hot-mix asphalt (HMA) liner with adequate anchorage below the crest (fill embankment) and at the bottom (minimum water …
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