Industry News

Dave Suits launches LDS Geosynthetics Consultant Services

February 17, 2017

As of December, 2016, L. David Suits is doing business as LDS Geosynthetics Consultant Services. Well-known in the industry, Suits has more than 40 years of experience with geosynthetics. He retired in 2005 from the New York State DOT where he oversaw the testing and acceptance of all geosynthetics for use on DOT projects. During …

Industry News

11-ICG abstracts due by Feb. 28

February 16, 2017

The Organizing Committee of the 11th International Conference on Geosynthetics (11ICG) invites all interested geotechnical and geosynthetics professionals and academics to submit oral and poster abstracts. The 11ICG welcomes contributions for the most up-to-date research and latest developments from around the world. All abstracts will be reviewed by the 11ICG Scientific Committee and, if accepted, …

Industry News

2/22/2017—Geosynthetic Institute (GSI) webinar: “Geosynthetic Drainage Materials: Applications, Design, Installation and Performance”

February 15, 2017

11:30 a.m.–1 p.m. (ET) Wednesday, Feb. 22, 2017 GSI members: $200 USD Non-GSI members: $250 USD www.geosynthetic-institute.org 610-522-8440 Webinar overview Geosynthetic drainage materials consist of a drainage core (geonet or geospacer) with geotextiles bonded to one or both surfaces. Their in-plane flow capacity is equivalent to 300mm (12in.) of sand with permeability of 0.01cm/sec or …

Industry News

GSE announces patent for geocomposite

February 14, 2017

Houston-based GSE Environmental announced in a Feb. 14 press release that it has received a patent for CoalDrain, an engineered geocomposite designed specifically for coal combustion residuals (CCRs or “coal ash”). The press release noted that the new product replaces the filter layer and the leachate collection layer in a typical Subtitle D liner system. …

Industry News

‘Learn, Collaborate, and Innovate’ at IECA’s 2017 Environmental Connection

February 9, 2017

Join the industry’s best at the IECA Environmental Connection Conference February 21–24 in Atlanta. Learn how to navigate industry changes, gain insight into resources to advance your company and colleagues, and engage in knowledge sharing to help you succeed. Highlights for the 2017 EC show include: Keynote Speakers—Jim Cantore from The Weather Channel and Craig …

Industry News

ASCE, TRB sponsoring conference on highways and airfields

February 8, 2017

The American Society of Civil Engineers (ASCE) and the Transportation Research Board (TRB) are co-sponsoring the 2017 International Conference on Highway and Airfield Technology on August 27, 2017, in Philadelphia, Pa. This event will bring together researchers, designers, project and construction managers, and contractors from around the world to discuss transportation and development projects ranging …

Industry News

GSI fellowships for graduate students

February 7, 2017

Request–For–Proposals The Geosynthetic Institute (GSI) has announced its annual worldwide student call for request-for-proposals (RFPs) focusing on innovative geosynthetics research and development projects. There will be several awards given, each for $5,000. (Note that this is a change from the original program in that the terms are different and that the students can be pursuing …

Industry News

IFF announces 2017 scholarships

February 7, 2017

Students have until June 10, 2017, to apply for any of four $5,000 scholarships available through The Industrial Fabrics Foundation (IFF). Each year, IFF awards several scholarships to degree-seeking students enrolled in accredited colleges, universities or technical schools. The scholarships are paid directly to the students’ schools for fall semester tuition. Available scholarships include: Textile …

Industry News

Geotechnical Frontiers announces full agenda

February 6, 2017

Organizers of the Geotechnical Frontiers 2017 conference and trade show have released the complete schedule for the March 12–15 event at the Hyatt Regency Orlando (Fla.). Among the highlights: eight full-day short courses (all offering PDHs—professional development hours); 200 exhibitors on the show floor; the first Robert M. Koerner Award and Lecture, plus Mercer, Seed, …

Industry News

GSI webinar Feb. 8: “Wave (or wrinkle) management for proper deployment of geomembranes”

February 1, 2017

11:30 a.m.–1 p.m. (ET) Wednesday, Feb. 8, 2017 GSI members: $200 USD Non-GSI members: $250 USD www.geosynthetic-institute.org 610-522-8440 Webinar overview An intrinsic property of all exposed geomembranes is that they expand and contract depending on the ambient temperature. During times of high temperature, this is evidenced by the appearance of waves (also called wrinkles) in …

Feature Members only content

Part 1: Functions and applications of geosynthetics in roadways

February 1, 2017

Introduction The geosynthetic products most commonly used in roadway systems include geotextiles (woven and nonwoven) and geogrids (biaxial and multiaxial), although erosion-control products, geocells, geonets (or geocomposite drainage products), and geomembranes have also been incorporated in a number of projects. These various types of geosynthetics can be used to fulfill one or more specific functions …

Feature Members only content

Oh no! The GCL got wet! Now what?

February 1, 2017

Authors’ note: The conditions This project started in central California in July 2014, and we watched the weather forecasts on the nightly news and we were calm. A few weeks later, the project is running longer than expected, and now we are watching the Weather Channel and reading Weather Underground and Accuweather with more interest …

GMA Techline Members only content

Questions and answers from the GMA Techline

February 1, 2017

Spraying? Shear Strength? Hydraulics? [A more] non-permeable GT? Q: I have received an inquiry for a non-permeable geotextile, which is UV-resistant and will be installed on a long slope for erosion control. Could you kindly recommend a product that would meet these requirements or a solution for this application? Your assistance with this is much …

Case Study Members only content

Case Study: Capping semi-liquid solids with geosynthetic layers

October 1, 2016

Introduction A U.S.-based polyethylene and polyester resin/polymer producer recently closed a manufacturing facility in Wilmington, N.C. (Photo 1). The company hired an engineering firm to manage the demolition and removal of the expansive structures and infrastructure. Part of the environmental responsibilities was to also find a viable solution for closing a 12-acre sludge basin. But …

Feature Members only content

Geomembrane waterproofing for a 10-mile wooden flume

October 1, 2016

Introduction In 2015, a private hydroelectric company in Washington state was looking to install a geosynthetic liner as part of a 16-km (10-mi) elevated wood and metal structure for conveying water—a flume. The project was located near Mount Rainier (Photo 1) about 50 miles southeast of Seattle in southwestern Washington’s Pierce County. The owner operates …

Feature Members only content

Devoted to geosynthetics for the long haul

October 1, 2016

Bob Koerner has devoted more than 40 years of his life to the advancement of geosynthetics, and he’s still pushing the industry forward. Introduction When Dr. Robert M. Koerner talks about geosynthetics, the cadence of his speech quickens and the passion behind his words suggests that geotextiles, geomembranes, geosynthetic clay liners and geogrids (to name …

Feature Members only content

Behind the [turbidity] curtain

October 1, 2016

Geosynthetics and marine construction near Golden Gate Bridge Introduction Marine construction projects often materialize with different sets of construction obstacles. In addition to the challenge of building stable structures in and under water, the environmental impact of construction must be limited. Creative and inventive methods for mitigating environmental contamination range from artificial habitat creation to …

Feature Members only content

Reviving the Palos Verdes Reservoir

October 1, 2016

Introduction California is home to one of the most active water resource infrastructure sectors. Geosynthetics can play an enormous role with the creation and rehabilitation of these water resources. The 76-year-old Palos Verdes Reservoir in Los Angeles County provides an exemplary case (Photo A). The 360-million-gallon cell is currently undergoing an update that will greatly …

Feature Members only content

Wetlands restoration at San Pablo Bay

August 1, 2016

How geofoam, as lightweight structural fill, solved a variety of construction challenges on a roadway embankment project in support of wetlands restoration in Northern California Introduction As those in the design and construction community know well, every project is slightly different from the last regardless of how many times similar challenges have been faced. When …

Feature Members only content

Accelerated geosynthetic closure of a mine refuse site

August 1, 2016

Case history: Cambria Site 93 in Pennsylvania Introduction During the coal mining process—underground or surface—other unwanted soil and rock materials are mined along with the coal. A separation technology is used to best segregate the coal from the “refuse material.” After separation, various amounts of coal still exist in the refuse piles of material left …

GMA Techline Members only content

Questions and answers from the GMA Techline

February 1, 2017

Spraying? Shear Strength? Hydraulics? [A more] non-permeable GT? Q: I have received an inquiry for a non-permeable geotextile, which is UV-resistant and will be installed on a long slope for erosion control. Could you kindly recommend a product that would meet these requirements or a solution for this application? Your assistance with this is much …

GMA Techline Members only content

Questions and answers from the GMA Techline

August 1, 2016

Geosynthetic filter failure Q: I am interested in your upcoming webinar on geosynthetic filters and was hoping to get a little clarification on the content. I’m most interested in how geotextile fabrics are used with riprap but I also understand these fabrics are perhaps more commonly associated with roadway construction. How much does this webinar …

GMA Techline Members only content

Recycled materials reinforcement?

June 1, 2016

Questions and answers from the GMA Techline We are soliciting information on the use of recycled materials in the reinforced zone of MSE walls. I recall you as the keeper of many case histories. Do you have any success or failure stories about such recycled content in a reinforced zone? I’m mindful of chemical attack …

GMA Techline Members only content

Weld or sew?

June 1, 2016

Questions and answers from the GMA Techline We have a liner contractor who would like to wedge-weld geotextile rather than sew it. The material is simply a cushion layer below the 40-mil geomembrane and the contractor is concerned the sewn seams will affect wedge welding of the above geomembrane. Do you have a recommendation on …

GMA Techline Members only content

Strength test?

June 1, 2016

Questions and answers from the GMA Techline Something that has always puzzled me while performing the CQA for liners is the strength test for a weld using the extrusion gun. I always thought that if the weld does not pass for elongation, that has more to do with the sheet than how well the weld …

GMA Techline Members only content

Three of the most difficult questions

June 1, 2016

From the GMA Techline Q-and-A 1. Mold inside drainage layer? Q: Recently there has been a greater demand for sustainable projects in Southern California and I was glad to see published in Geosynthetics magazine “Geosynthetics: The science that makes green roofs work” (June/July 2014, Vol. 32, No. 3). I am curious if there are any …

GMA Techline Members only content

Lining of soil embankment?

June 1, 2016

Questions and answers from the GMA Techline I have a question concerning lining systems in embankment dams and want to ask for your advice (from your experience only, no need for any calculations). There is a wastewater reservoir built of clay, with a single HDPE geomembrane on top of the clay (i.e., a kind of …

GMA Techline Members only content

Geotextile question

February 1, 2016

We have a geotextile AOS requirement of 0.15mm for which we have recommended a 10-ounce geotextile to our client. Because our client has an abundance of 8-ounce geotextile on-site, he would prefer to make use of it in place of the recommended 10-ounce. My question to you is this: Can two layers of 8-ounce geotextile …

GMA Techline Members only content

Reinforcement deformations

February 1, 2016

You made a presentation in Peru where you talked about a new method to calculate deformations on reinforced embankments. Now I am working on a project where the foundation needs to be, in part, over consolidated tailings. Even though we are putting rockfill embedded on the tailings, our pseudo-static analyses result in a FS of …

GMA Techline Members only content

MQA and GRI specs

February 1, 2016

There is much inconsistency regarding the definition of a production batch quantity for geomembranes and how this relates to MQA sampling frequencies. What is the intent of the GRI specifications? Maggie | Australia Maggie, Regarding MQC—the factory production of like material—the GRI specifications give the frequencies of each particular test. These values were the subject …

Industry News

Dave Suits launches LDS Geosynthetics Consultant Services

February 17, 2017

As of December, 2016, L. David Suits is doing business as LDS Geosynthetics Consultant Services. Well-known in the industry, Suits has more than 40 years of experience with geosynthetics. He retired in 2005 from the New York State DOT where he oversaw the testing and acceptance of all geosynthetics for use on DOT projects. During …

Industry News

11-ICG abstracts due by Feb. 28

February 16, 2017

The Organizing Committee of the 11th International Conference on Geosynthetics (11ICG) invites all interested geotechnical and geosynthetics professionals and academics to submit oral and poster abstracts. The 11ICG welcomes contributions for the most up-to-date research and latest developments from around the world. All abstracts will be reviewed by the 11ICG Scientific Committee and, if accepted, …

Industry News

2/22/2017—Geosynthetic Institute (GSI) webinar: “Geosynthetic Drainage Materials: Applications, Design, Installation and Performance”

February 15, 2017

11:30 a.m.–1 p.m. (ET) Wednesday, Feb. 22, 2017 GSI members: $200 USD Non-GSI members: $250 USD www.geosynthetic-institute.org 610-522-8440 Webinar overview Geosynthetic drainage materials consist of a drainage core (geonet or geospacer) with geotextiles bonded to one or both surfaces. Their in-plane flow capacity is equivalent to 300mm (12in.) of sand with permeability of 0.01cm/sec or …

Industry News

GSE announces patent for geocomposite

February 14, 2017

Houston-based GSE Environmental announced in a Feb. 14 press release that it has received a patent for CoalDrain, an engineered geocomposite designed specifically for coal combustion residuals (CCRs or “coal ash”). The press release noted that the new product replaces the filter layer and the leachate collection layer in a typical Subtitle D liner system. …

Industry News

‘Learn, Collaborate, and Innovate’ at IECA’s 2017 Environmental Connection

February 9, 2017

Join the industry’s best at the IECA Environmental Connection Conference February 21–24 in Atlanta. Learn how to navigate industry changes, gain insight into resources to advance your company and colleagues, and engage in knowledge sharing to help you succeed. Highlights for the 2017 EC show include: Keynote Speakers—Jim Cantore from The Weather Channel and Craig …

Industry News

ASCE, TRB sponsoring conference on highways and airfields

February 8, 2017

The American Society of Civil Engineers (ASCE) and the Transportation Research Board (TRB) are co-sponsoring the 2017 International Conference on Highway and Airfield Technology on August 27, 2017, in Philadelphia, Pa. This event will bring together researchers, designers, project and construction managers, and contractors from around the world to discuss transportation and development projects ranging …

Industry News

GSI fellowships for graduate students

February 7, 2017

Request–For–Proposals The Geosynthetic Institute (GSI) has announced its annual worldwide student call for request-for-proposals (RFPs) focusing on innovative geosynthetics research and development projects. There will be several awards given, each for $5,000. (Note that this is a change from the original program in that the terms are different and that the students can be pursuing …

Industry News

IFF announces 2017 scholarships

February 7, 2017

Students have until June 10, 2017, to apply for any of four $5,000 scholarships available through The Industrial Fabrics Foundation (IFF). Each year, IFF awards several scholarships to degree-seeking students enrolled in accredited colleges, universities or technical schools. The scholarships are paid directly to the students’ schools for fall semester tuition. Available scholarships include: Textile …

Industry News

Geotechnical Frontiers announces full agenda

February 6, 2017

Organizers of the Geotechnical Frontiers 2017 conference and trade show have released the complete schedule for the March 12–15 event at the Hyatt Regency Orlando (Fla.). Among the highlights: eight full-day short courses (all offering PDHs—professional development hours); 200 exhibitors on the show floor; the first Robert M. Koerner Award and Lecture, plus Mercer, Seed, …

Industry News

GSI webinar Feb. 8: “Wave (or wrinkle) management for proper deployment of geomembranes”

February 1, 2017

11:30 a.m.–1 p.m. (ET) Wednesday, Feb. 8, 2017 GSI members: $200 USD Non-GSI members: $250 USD www.geosynthetic-institute.org 610-522-8440 Webinar overview An intrinsic property of all exposed geomembranes is that they expand and contract depending on the ambient temperature. During times of high temperature, this is evidenced by the appearance of waves (also called wrinkles) in …

GMA Techline Members only content

Questions and answers from the GMA Techline

February 1, 2017

Spraying? Shear Strength? Hydraulics? [A more] non-permeable GT? Q: I have received an inquiry for a non-permeable geotextile, which is UV-resistant and will be installed on a long slope for erosion control. Could you kindly recommend a product that would meet these requirements or a solution for this application? Your assistance with this is much …

GMA Techline Members only content

Questions and answers from the GMA Techline

August 1, 2016

Geosynthetic filter failure Q: I am interested in your upcoming webinar on geosynthetic filters and was hoping to get a little clarification on the content. I’m most interested in how geotextile fabrics are used with riprap but I also understand these fabrics are perhaps more commonly associated with roadway construction. How much does this webinar …

GMA Techline Members only content

Recycled materials reinforcement?

June 1, 2016

Questions and answers from the GMA Techline We are soliciting information on the use of recycled materials in the reinforced zone of MSE walls. I recall you as the keeper of many case histories. Do you have any success or failure stories about such recycled content in a reinforced zone? I’m mindful of chemical attack …

GMA Techline Members only content

Weld or sew?

June 1, 2016

Questions and answers from the GMA Techline We have a liner contractor who would like to wedge-weld geotextile rather than sew it. The material is simply a cushion layer below the 40-mil geomembrane and the contractor is concerned the sewn seams will affect wedge welding of the above geomembrane. Do you have a recommendation on …

GMA Techline Members only content

Strength test?

June 1, 2016

Questions and answers from the GMA Techline Something that has always puzzled me while performing the CQA for liners is the strength test for a weld using the extrusion gun. I always thought that if the weld does not pass for elongation, that has more to do with the sheet than how well the weld …

GMA Techline Members only content

Three of the most difficult questions

June 1, 2016

From the GMA Techline Q-and-A 1. Mold inside drainage layer? Q: Recently there has been a greater demand for sustainable projects in Southern California and I was glad to see published in Geosynthetics magazine “Geosynthetics: The science that makes green roofs work” (June/July 2014, Vol. 32, No. 3). I am curious if there are any …

GMA Techline Members only content

Lining of soil embankment?

June 1, 2016

Questions and answers from the GMA Techline I have a question concerning lining systems in embankment dams and want to ask for your advice (from your experience only, no need for any calculations). There is a wastewater reservoir built of clay, with a single HDPE geomembrane on top of the clay (i.e., a kind of …

GMA Techline Members only content

Geotextile question

February 1, 2016

We have a geotextile AOS requirement of 0.15mm for which we have recommended a 10-ounce geotextile to our client. Because our client has an abundance of 8-ounce geotextile on-site, he would prefer to make use of it in place of the recommended 10-ounce. My question to you is this: Can two layers of 8-ounce geotextile …

GMA Techline Members only content

Reinforcement deformations

February 1, 2016

You made a presentation in Peru where you talked about a new method to calculate deformations on reinforced embankments. Now I am working on a project where the foundation needs to be, in part, over consolidated tailings. Even though we are putting rockfill embedded on the tailings, our pseudo-static analyses result in a FS of …

GMA Techline Members only content

MQA and GRI specs

February 1, 2016

There is much inconsistency regarding the definition of a production batch quantity for geomembranes and how this relates to MQA sampling frequencies. What is the intent of the GRI specifications? Maggie | Australia Maggie, Regarding MQC—the factory production of like material—the GRI specifications give the frequencies of each particular test. These values were the subject …