Industry News

Minnesota plans $1 billion in 2017 infrastructure projects

May 26, 2017

Minnesota transportation commissioner Charlie Zelle announced $1 billion in state road and bridge projects this year. According to the Zelle, the 211 projects, many of which are already underway, will help keep the state’s roads and bridges in good working condition, improve safety for motorists, and support thousands of construction jobs across the state. “The …

Industry News

ESI welcomes David Nolting as corporate health and safety manager

May 24, 2017

Environmental Specialties, Inc. (ESI) of Baton Rouge, La., a major installer of geosynthetics, welcomed David Nolting to the company as corporate health and safety manager. “We created this new position because it continues to demonstrate our deep commitment to lead with safety in every aspect of our business,” stated ESI president Mark Dillon. “David has …

Industry News

HUESKER opens production facility in Russia

May 23, 2017

HUESKER Russia inaugurated its first production site in Russia on March 29, 2017, in the town of Klin, 80 km northwest of Moscow. “We believe there is even greater potential for our products and system solutions in the Russian market,” HUESKER Group managing director Dr. F.- Hans Grandin said. “Particularly in the roads and pavements segment, but also …

Industry News

GSI offers webinar on uses for abandoned/closed landfills

May 22, 2017

The Geosynthetic Institute (GSI) will offer a webinar on “Beneficial Uses of Abandoned and/or Closed Landfills,” on May 24, 2017, from 11:30 a.m. to 1 p.m. EDT. There are currently about 7,000 closed and/or abandoned landfills in America and countless others around the world. They invariably stand as fenced-off monuments to our waste-disposal practice and …

Industry News

GMA releases video of Koerner lecture

May 19, 2017

The Geosynthetic Materials Association (GMA) released a video of Dr. George Koerner delivering the first lecture in the Robert M. Koerner Award and Lecture Series at Geotechnical Frontiers 2017 in Orlando, Fla., in March. The lecture, entitled “Geosynthetic Successes Hidden in the Details,” can be viewed online at http://ow.ly/XFPK30bSdVy. Established by GMA in 2016, the …

Industry News

Tensar increases capacity at Morrow, Ga. plant

May 18, 2017

Tensar International is increasing capacity 35% at its Morrow, GA, geogrid manufacturing facility. Significant growth of Tensar’s TriAx line of geogrid products, and customer requests for new variants of the product has also prompted Tensar’s further investment in research and development capabilities at the Morrow plant. Tensar’s Morrow facility is enhancing its R&D rapid-prototyping capabilities …

Industry News

Officials break ground on research and technology park near FAA technical center

May 16, 2017

Construction began May 15, 2017, on the Stockton Aviation Research and Technology Park adjacent to the William J. Hughes FAA Technical Center in Egg Harbor Township, N.J. The first building will be a 66,000-square-foot facility that will feature high-speed connectivity to the FAA technical center laboratories, state-of-the-art classrooms and conference rooms, and a rooftop lounge. …

Industry News

2018 Transportation Research Board (TRB) Annual Meeting Call for papers now open

May 12, 2017

TRB standing committees have issued calls for papers for the 97th TRB Annual Meeting, Jan. 7–11, 2018, in Washington, D.C, and/or the Transportation Research Record: Journal of the Transportation Research Board (TRR). The deadline to submit papers to be considered for the 2018 TRB Annual Meeting and TRR is August 1, 2017. Papers must be …

Industry News

Raven announces resignation of board member Heather Wilson

May 11, 2017

Sioux Falls, S.D.-based Raven Industries announced in a May 9 press release that Heather Wilson has resigned from its board of directors effective immediately. Wilson was recently confirmed as the U.S. Secretary of the Air Force. “Heather brought a useful perspective to the board with her range of experiences and knowledge on a variety of …

Industry News

Hydrologic Evaluation of Landfill Performance (HELP) Model

May 10, 2017

Ask a technical expert                                                          Got a question about our research model? Want to give us feedback? Contact a technical expert about the HELP Model. The HELP model estimates water balances for landfills and other land disposal systems. The program models rainfall, runoff, infiltration, and other water pathways to estimate how much water builds up above …

Feature

PART 2 Functions and applications of geosynthetics in roadways

April 1, 2017

Introduction Part 1 of this article provided an overview of the various functions that geosynthetics can fulfill in roadway applications. These functions include separation, filtration, reinforcement, stiffening, drainage, hydraulic/gas barrier, and protection. Table 1 in that article identified a total of five roadway applications involving geosynthetics. For each of the five roadway applications, the table …

Feature Members only content

PART 1 ‘Geosynthetic reinforced soil 101’ leading to rational design of MSE walls and slopes

April 1, 2017

Introduction The design of many geotechnical structures is based on limit state conditions. For example, in designing gravity walls, the load exerted by the retained soil on the wall is based on an assumed active state of stresses. That is, the wall moves sufficiently outward, enabling the retained soil to mobilize its shear strength along …

Feature Members only content

Flood impact reduction and streambank repair along Spy Run Creek

April 1, 2017

Background Spy Run Creek in Fort Wayne, Ind., is a 10-mile watercourse that drains several square miles on the northwest side of Fort Wayne. Spy Run Creek empties into the St. Mary’s River in downtown Fort Wayne, just upstream from its confluence with the St. Joseph River. The St. Mary’s and the St. Joseph rivers …

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 …

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

Minnesota plans $1 billion in 2017 infrastructure projects

May 26, 2017

Minnesota transportation commissioner Charlie Zelle announced $1 billion in state road and bridge projects this year. According to the Zelle, the 211 projects, many of which are already underway, will help keep the state’s roads and bridges in good working condition, improve safety for motorists, and support thousands of construction jobs across the state. “The …

Industry News

ESI welcomes David Nolting as corporate health and safety manager

May 24, 2017

Environmental Specialties, Inc. (ESI) of Baton Rouge, La., a major installer of geosynthetics, welcomed David Nolting to the company as corporate health and safety manager. “We created this new position because it continues to demonstrate our deep commitment to lead with safety in every aspect of our business,” stated ESI president Mark Dillon. “David has …

Industry News

HUESKER opens production facility in Russia

May 23, 2017

HUESKER Russia inaugurated its first production site in Russia on March 29, 2017, in the town of Klin, 80 km northwest of Moscow. “We believe there is even greater potential for our products and system solutions in the Russian market,” HUESKER Group managing director Dr. F.- Hans Grandin said. “Particularly in the roads and pavements segment, but also …

Industry News

GSI offers webinar on uses for abandoned/closed landfills

May 22, 2017

The Geosynthetic Institute (GSI) will offer a webinar on “Beneficial Uses of Abandoned and/or Closed Landfills,” on May 24, 2017, from 11:30 a.m. to 1 p.m. EDT. There are currently about 7,000 closed and/or abandoned landfills in America and countless others around the world. They invariably stand as fenced-off monuments to our waste-disposal practice and …

Industry News

GMA releases video of Koerner lecture

May 19, 2017

The Geosynthetic Materials Association (GMA) released a video of Dr. George Koerner delivering the first lecture in the Robert M. Koerner Award and Lecture Series at Geotechnical Frontiers 2017 in Orlando, Fla., in March. The lecture, entitled “Geosynthetic Successes Hidden in the Details,” can be viewed online at http://ow.ly/XFPK30bSdVy. Established by GMA in 2016, the …

Industry News

Tensar increases capacity at Morrow, Ga. plant

May 18, 2017

Tensar International is increasing capacity 35% at its Morrow, GA, geogrid manufacturing facility. Significant growth of Tensar’s TriAx line of geogrid products, and customer requests for new variants of the product has also prompted Tensar’s further investment in research and development capabilities at the Morrow plant. Tensar’s Morrow facility is enhancing its R&D rapid-prototyping capabilities …

Industry News

Officials break ground on research and technology park near FAA technical center

May 16, 2017

Construction began May 15, 2017, on the Stockton Aviation Research and Technology Park adjacent to the William J. Hughes FAA Technical Center in Egg Harbor Township, N.J. The first building will be a 66,000-square-foot facility that will feature high-speed connectivity to the FAA technical center laboratories, state-of-the-art classrooms and conference rooms, and a rooftop lounge. …

Industry News

2018 Transportation Research Board (TRB) Annual Meeting Call for papers now open

May 12, 2017

TRB standing committees have issued calls for papers for the 97th TRB Annual Meeting, Jan. 7–11, 2018, in Washington, D.C, and/or the Transportation Research Record: Journal of the Transportation Research Board (TRR). The deadline to submit papers to be considered for the 2018 TRB Annual Meeting and TRR is August 1, 2017. Papers must be …

Industry News

Raven announces resignation of board member Heather Wilson

May 11, 2017

Sioux Falls, S.D.-based Raven Industries announced in a May 9 press release that Heather Wilson has resigned from its board of directors effective immediately. Wilson was recently confirmed as the U.S. Secretary of the Air Force. “Heather brought a useful perspective to the board with her range of experiences and knowledge on a variety of …

Industry News

Hydrologic Evaluation of Landfill Performance (HELP) Model

May 10, 2017

Ask a technical expert                                                          Got a question about our research model? Want to give us feedback? Contact a technical expert about the HELP Model. The HELP model estimates water balances for landfills and other land disposal systems. The program models rainfall, runoff, infiltration, and other water pathways to estimate how much water builds up above …

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 …