Industry News

Raven Industries Pleasanton, Texas, facility to open

March 23, 2017

Raven Industries announced that its Engineered Films division will open its newest facility on April 3, 2017, in Pleasanton, Texas. Raven purchased this facility through an asset liquidation sale. “This facility purchase was a sound strategic move for Raven to further expand our support of existing and future oilfield business in the southern regions of …

Industry News

IECA issues Call for Papers for the IECA 2018 Annual Conference

March 22, 2017

The International Erosion Control Association (IECA) issued their Call for Papers for the IECA 2018 Annual Conference in Long Beach, Ca., Feb. 11–14, 2018. The organization is particularly interested in papers on erosion and sediment control; storm-water management; wetland, stream bank, and shoreline restoration; MS4 management; and industry events and trends. The deadline for submission …

Press Release

Caltrans allocates $217 million to infrastructure

March 22, 2017

The California Transportation Commission (Caltrans) allocated more than $217 million to 72 projects, to support needed upkeep on California’s aging roads and bridges, make upgrades to transit and rail systems, and encourage use of alternative forms of transportation, including biking and walking. “Caltrans is working to ensure every dollar counts when it comes to California’s …

Events

Pavement Life-Cycle Assessment Symposium registration opens

March 21, 2017

The Illinois Center for Transportation opened registration for the Pavement Life-Cycle Assessment Symposium 2017 in Urbana-Champaign, Apr. 11–13. Hosted by the University of Illinois, the symposium will focus on the implementation of life-cycle assessment in North America and around the world. For more information or to register, visit http://lcasymposium.ict.illinois.edu.

Industry News

U.S. Customs and Border Protection issues RFP for border wall

March 21, 2017

U.S. Customs and Border Protection (CBP), an agency of the federal Department of Homeland Security, issued two Requests for Proposal (RFP) for a Solid Concrete Wall Prototype Construction Design-Build and an Other Border Wall Prototype Construction Design-Build. The RFPs are part of the border wall with Mexico proposed by the Trump administration. The multiple-award, indefinite-delivery, …

Industry News

Speakers announced for EurAsian Geotextiles Symposium

March 21, 2017

EDANA, formerly known as the European Disposables and Nonwovens Association, and the China Nonwovens and Industrial Textile Association (CNITA) announced speakers for the June 7–8, 2017, EurAsian Geotextiles Symposium in Beijing, China. For more information or to register, visit http://bit.ly/2fZpM86.

Industry News

ASDSO announces course on emergency action for dams and levees

March 20, 2017

The Association of State Dam Safety Officials (ASDSO) will host the course “Interactive Preparedness: Emergency Action Planning for Dams and Levees” Apr. 25–26 in Baltimore, Md. This basic-level course will address how to develop, update, and test effective Emergency Action Plans (EAP) for dams and levees. For more information or to register, visit http://bit.ly/2mQWg52.

Industry News

2017 ASCE Report Card makes strong case for greater infrastructure investment

March 17, 2017

The American Association of State Highway and Transportation Officials (AASHTO) issued on Mar. 9 the 2017 American Society of Civil Engineers Report Card on American infrastructure, which argued that underinvesting in transportation infrastructure is failing America. “The grades in the ASCE Report Card provide yet another example of what occurs when a nation underinvests in …

Industry News

Wisconsin DOT showcases use of GRS-IBS system on highway bridge

March 15, 2017

As reported in the March/April 2017 issue of the Federal Highway Administration newsletter Innovator, the Wisconsin Department of Transportation (WisDOT) released a time-lapse video demonstrating the use of geosynthetic reinforced soil–integrated bridge system (GRS-IBS) technology in the replacement of a bridge on County Highway S over Shaw Brook in Dodge County. This was one of …

Industry News

NC Department of Environmental Quality seeks public comment on Duke Energy’s draft plans to close four coal ash impoundments

March 13, 2017

The North Carolina Department of Environmental Quality (DEQ) is asking interested individuals and organizations to comment in writing and at four public meetings this month on the utility’s lengthy draft plans to close coal-fired power plant waste impoundments near Asheville, Gastonia, Eden and Wilmington. As reported by Catherine Clabby of North Carolina Health News, the …

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

Raven Industries Pleasanton, Texas, facility to open

March 23, 2017

Raven Industries announced that its Engineered Films division will open its newest facility on April 3, 2017, in Pleasanton, Texas. Raven purchased this facility through an asset liquidation sale. “This facility purchase was a sound strategic move for Raven to further expand our support of existing and future oilfield business in the southern regions of …

Industry News

IECA issues Call for Papers for the IECA 2018 Annual Conference

March 22, 2017

The International Erosion Control Association (IECA) issued their Call for Papers for the IECA 2018 Annual Conference in Long Beach, Ca., Feb. 11–14, 2018. The organization is particularly interested in papers on erosion and sediment control; storm-water management; wetland, stream bank, and shoreline restoration; MS4 management; and industry events and trends. The deadline for submission …

Events

Pavement Life-Cycle Assessment Symposium registration opens

March 21, 2017

The Illinois Center for Transportation opened registration for the Pavement Life-Cycle Assessment Symposium 2017 in Urbana-Champaign, Apr. 11–13. Hosted by the University of Illinois, the symposium will focus on the implementation of life-cycle assessment in North America and around the world. For more information or to register, visit http://lcasymposium.ict.illinois.edu.

Industry News

U.S. Customs and Border Protection issues RFP for border wall

March 21, 2017

U.S. Customs and Border Protection (CBP), an agency of the federal Department of Homeland Security, issued two Requests for Proposal (RFP) for a Solid Concrete Wall Prototype Construction Design-Build and an Other Border Wall Prototype Construction Design-Build. The RFPs are part of the border wall with Mexico proposed by the Trump administration. The multiple-award, indefinite-delivery, …

Industry News

Speakers announced for EurAsian Geotextiles Symposium

March 21, 2017

EDANA, formerly known as the European Disposables and Nonwovens Association, and the China Nonwovens and Industrial Textile Association (CNITA) announced speakers for the June 7–8, 2017, EurAsian Geotextiles Symposium in Beijing, China. For more information or to register, visit http://bit.ly/2fZpM86.

Industry News

ASDSO announces course on emergency action for dams and levees

March 20, 2017

The Association of State Dam Safety Officials (ASDSO) will host the course “Interactive Preparedness: Emergency Action Planning for Dams and Levees” Apr. 25–26 in Baltimore, Md. This basic-level course will address how to develop, update, and test effective Emergency Action Plans (EAP) for dams and levees. For more information or to register, visit http://bit.ly/2mQWg52.

Industry News

2017 ASCE Report Card makes strong case for greater infrastructure investment

March 17, 2017

The American Association of State Highway and Transportation Officials (AASHTO) issued on Mar. 9 the 2017 American Society of Civil Engineers Report Card on American infrastructure, which argued that underinvesting in transportation infrastructure is failing America. “The grades in the ASCE Report Card provide yet another example of what occurs when a nation underinvests in …

Industry News

Wisconsin DOT showcases use of GRS-IBS system on highway bridge

March 15, 2017

As reported in the March/April 2017 issue of the Federal Highway Administration newsletter Innovator, the Wisconsin Department of Transportation (WisDOT) released a time-lapse video demonstrating the use of geosynthetic reinforced soil–integrated bridge system (GRS-IBS) technology in the replacement of a bridge on County Highway S over Shaw Brook in Dodge County. This was one of …

Industry News

NC Department of Environmental Quality seeks public comment on Duke Energy’s draft plans to close four coal ash impoundments

March 13, 2017

The North Carolina Department of Environmental Quality (DEQ) is asking interested individuals and organizations to comment in writing and at four public meetings this month on the utility’s lengthy draft plans to close coal-fired power plant waste impoundments near Asheville, Gastonia, Eden and Wilmington. As reported by Catherine Clabby of North Carolina Health News, the …

Industry News

GMA meetings upcoming at Geotechnical Frontiers in Orlando, Fla.

March 10, 2017

The Geosynthetic Materials Association (GMA) will host multiple meetings at the Geotechnical Frontiers Conference in Orlando, Fla., March 13–15. Please RSVP at https://www.surveymonkey.com/r/GMA_RSVP if you plan to attend. All GMA meetings will be held in Bayhill 23 at the Hyatt Regency Orlando, one floor above the exhibit hall. Meetings include the following: Monday, March 13, …

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 …