New Issue, New Format for IGS News

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The International Geosynthetics Society has published its latest issue of IGS News (Volume 33, Issue #2), and with the email announcement of the PDF issue’s availability is word of a new format. The email announcement included direct links to the individual stories as published on the IGS website. The new format is a welcomed update, retaining the traditional archive of material in a single, downl... »

EuroGeo Transcript: Geomembrane Wrinkles, Bridging, Ballasting, Parts 3 – 5

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During EuroGeo 6, Dr. Ian D. Peggs, P.E., P.Eng chaired a special panel discussion on geomembrane wrinkles, bridging, uplift, and ballasting. The recorded session featured panelists Paul Guinard (SOPREMA), Adnan Berkay Özdemir (Atarfil), Michael Flynn (FLI Group), Catrin Tarnowski (GSE), and Richard Thiel (Thiel Engineering). We publish here, with permission of the EuroGeo 6 organizers (the Turkis... »

EuroGeo Transcript: Geomembrane Wrinkles, Bridging, Ballasting, Parts 1 and 2

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During EuroGeo 6, Dr. Ian D. Peggs, P.E., P.Eng chaired a special panel discussion on geomembrane wrinkles, bridging, uplift, and ballasting.  We publish here, with permission of the EuroGeo 6 organizers (the Turkish Chapter of the International Geosynthetics Society) and the participating panelists the full transcript of the session. We thank Ian Peggs and Wendy Cortez of I-CORP International for... »

Geosynthetics CQA Workshop at Australian Landfill Conference

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During the 7th Australian Landfill and Transfer Stations Conference, a one-day CQA workshop will be held with a focus on construction quality assurance (CQA) for geosynthetic liners. These barrier systems are vital to the long-term performance and environmental security of waste management installations. The CQA conducted on site ensures that these systems go into operation in ideal condition to b... »

Cold Weather Watch: Rapid Crack Propagation in Geomembranes

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By Ian D. Peggs and Chris Kelsey – Low temperatures, fast-dropping temperatures, and strong winds can provide the ideal conditions for rapid crack propagation (RCP)—“shattering”—in exposed high-density polyethylene geomembranes. The return of what’s called the “Polar Vortex” in the United States and Canada has brought these conditions with atypically low temperatures occurring quickly. (Editor’s N... »

Avoiding Whales in Anaerobic Digesters

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By Ian D. Peggs, P.E. – In 2014, shortly after being placed in service, one of two geomembrane-lined and covered anaerobic digesters generated extensive whales—“bubbles” in the lining system. Attempts to remove the apparent gas from under the cover were made unsuccessfully until it was realized that the cover was being uplifted by gas under the liner. Within two or three days, there were whales se... »

SURVEY: Extra-Wide Geomembranes

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I-CORP International’s Dr. Ian D. Peggs, P.E., P.Eng has shared a survey on extra-wide geomembranes. Your participation is invited. Responses are sought from manufacturers, distributors, installers, construction/contracting firms, design engineers, etc. The information gathering project aims to initially assess the market potential for 11.6m-wide, seamless panels of polyethylene and polyprop... »

10 Geomembrane Questions

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Questioning the practice of engineering has long been part of the geosynthetics field. It is this on-going dialogue and re-evaluation that leads to new manufacturing innovations, better CQA, more economical and more sustainable designs, and much more. Here, we present geomembrane questions, as contributed by Dr. Ian D. Peggs, P.E., P.Eng of I-CORP INTERNATIONAL: We install high-density polyethylen... »

Geomembrane Wrinkles, Bridging, and Ballasting Special Session

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During EuroGeo 6 (25 – 28 September 2016, Istanbul), Dr. Ian D. Peggs will moderate a panel discussion on “Managing Wrinkles, Bridging and Ballasting During Geomembrane Liner Installation.” The session is one of seven Specialty Sessions to be held at the conference, which is the 6th European Conference on Geosynthetics. Presentations for the geomembrane wrinkles session include: Managi... »

Panelists Sought for Liner Installation Session

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During EuroGeo 6 (25 – 28 September 2016) in Istanbul, Turkey, Dr. Ian D. Peggs will moderate a panel discussion on “Managing Wrinkles, Bridging, and Ballasting during Geomembrane Liner Installation.” Interested contributors are encouraged to contact Dr. Peggs. The format for the session will involve six 5-minute presentations followed by an hour of group discussion with the audience. ... »

Graphene and the Next Generation of Geosynthetics

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By Ian D. Peggs – Geosynthetic materials and products continue their steady development, as additive packages and manufacturing technologies evolve. Today, however, is different. Today, we are truly on the verge of a significant leap in geosynthetic performance. The enabler? Graphene. That single layer of carbon atoms has a specific strength higher than steel. It is self-repairing and has higher e... »

Looking Back: The Geosynthetics Risk Management Program

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In 2004, Geosynthetica’s Director Elizabeth Peggs, Lara Costa, and founder Dr. Ian D. Peggs, P.E. (I-CORP International) created a white paper that proposed a Geosynthetics Risk Management and Loss Control Program (GRMP). Targeting insurers of construction projects, the program aimed to establish the need for expert design review to prevent costly failures that might result from improper use... »

Report from the Berlin 2 Workshop on Exposed, HDPE Geomembranes

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By Chris Kelsey – On September 26, immediately following the 10th International Conference on Geosynthetics (10 ICG), a high-level, one-day workshop on HDPE geomembranes convened at the headquarters of BAM, Germany’s Federal Institute for Materials Research and Testing. The event brought together field luminaries who represented not only the international practice but multiple perspect... »

Berlin 2 – Geomembrane Workshop

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Tentative Schedule 09:00 – 10:15 Session 1 – 9 papers @ 8 mins ea. 10:15 – 10:30 Coffee Break in meeting room area 10:30 – 11:45 Session 2 – 9 papers @ 8 mins ea. 11:45 – 12:15 Session 3 – Create outline of key topics to be addressed in the afternoon 12:15 – 13:30 Lunch on site at BAM Commissary 13:30 – 15:00 Session 4 – Discussion Sessio... »

Eliminating Geomembrane Stress Cracking

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By Ian D. Peggs ** Can geomembrane stress cracking (SC) be eliminated altogether? Probably not. But it can still surely be reduced if we understand its causes a little better. Can SC be eliminated altogether? Probably not. But it can still surely be reduced if we understand its causes a little better. We have made great improvements (specified NCTL times from 200 to 1000 hr) since the 1980s when t... »

“Catching Up With…” Issue 1

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geosynthetica's newest column tracks the travels, lectures, work, current research interests, and so forth of engineers and others working with geosynthetics. Issue 1 catches up with I-CORP INTERNATIONAL's Ian Peggs, who recently visited Australia, New Zealand, the Philippines and Korea for litigation, site and company visits, IAGI certification proctoring, industry discussions and much more. Read... »

Film Tearing Bond (FTB): Going, Going, But Not Quite Gone

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The term "Film Tearing Bond (FTB)" for qualifying welded geomembrane seams essentially disappeared from the waste containment sector several years ago, but it still remains in the potable water sector. Ian Peggs, I-CORP INTERNATIONAL, authors a tech note proposing "that we forever banish FTB." »

Geomembrane Spark Testing and Difficult Installation Points

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"When asked what voltage setting was used to perform spark testing on a pipe penetration weld the operator said “Dunno, I just turned it to the max as stated in the instructions”! This is just the right way to miss leaks, as happened..." Ian Peggs of I-CORP INTERNATIONAL takes a look at what is occurring during spark testing. »