Industry News

President Trump speaks on infrastructure

August 15, 2017

President Donald J. Trump will speak to the public on the nation’s infrastructure at 3:45 p.m. EDT on August 15, 2017. The president’s remarks can be viewed online at https://www.whitehouse.gov/live/president-trump-gives-statement-infrastructure-discussion.

Industry News

Sustainable building and construction trade mission to Mexico

August 15, 2017

The deadline to join the United States Department of Commerce’s Sustainable Building and Construction Trade Mission to Mexico is imminent. This tailored trade mission will include representatives from U.S. companies and U.S. trade associations with members that provide green, innovative, and sustainable products and services to the commercial, industrial, and residential construction sectors from October 16-20, …

Industry News

The Geosynthetic Institute announces 2017–18 fellowships

August 15, 2017

The Geosynthetic Institute (GSI), with the guidance of the GSI board of directors, announced their fellowship awards for the 2017–18 academic year. The program recognizes and supports outstanding students from around the world studying geosynthetics. The GSI fellowship program includes candidates pursuing a master’s degree or a doctoral degree. The amount for each fellowship recipient …

Industry News

OSHA launches injury-tracking system

August 14, 2017

The Occupational Safety and Health Administration (OSHA) launched its web-based Injury Tracking Application (ITA) on Aug. 1, and extended the deadline for submitting 2016 injury and illness data to Dec. 1, 2017. The reporting requirements are part of a final rule issued in October 2016 to improve tracking of workplace injuries and illnesses. The new …

Company News

Elastec’s American Marine division celebrates 50 years of manufacturing

August 11, 2017

In 1967 in Cocoa, Fla., the late Jim Pearce formed a new company to help control water pollution: American Marine. An early innovator in the development of oil containment booms, fire booms and turbidity curtains, Pearce initially developed Hull Guards, devices used to help small boat owners keep the bottom of their vessels free of …

Industry News

Strata Systems launches engineering software platform for GRS

August 10, 2017

Strata Systems, Inc., a manufacturer and distributor of geosynthetic soil stabilization products, recently launched the latest version of StrataPro, an engineering software platform that gives designers the ability to analyze a variety of faced systems on geosynthetically reinforced soil (GRS) structures. Strata says the platform, which is available through its website, will help designers determine …

Industry News

TRB hosts webinar on airport stormwater management

August 9, 2017

The Transportation Research Board (TRB) will conduct a webinar on September 14, 2017, from 2:00 p.m. to 3:30 p.m. EDT discussing research that may help airport environmental practitioners understand the environmental regulations and permitting programs that apply to airports’ management of stormwater and other types of water resources. This webinar is sponsored by the Airport …

Industry News

HUESKER offers free webinar on using GRS for retaining structures

August 3, 2017

HUESKER is presenting a free webinar on using geosynthetic reinforced soil (GRS) for retaining structures on August 24, 2017, at 1:30 p.m. EDT. Hosted by HUESKER Engineering Department head Lilma Schimmel, the webinar will offer an overview of using GRS technology for safe construction of steepened, settlement-resistant walls and slopes. The low-cost method includes fast, …

Industry News

USDOT announces proposed rule to streamline public-private transit projects

August 2, 2017

The U.S. Department of Transportation’s (USDOT) Federal Transit Administration (FTA) announced on July 31, 2017, a proposal to facilitate public-private partnerships in public transportation. If adopted, the Private Investment Project Procedures (PIPP) for public transportation capital projects rule would help the federal government develop more effective approaches to spurring private participation and investment in project …

GMA News

Gardner, Chuck, and Brown re-elected

August 2, 2017

Before adjourning the April 26 executive council meeting, the council unanimously re-elected GMA’s leaders each to another two-year term (June 1, 2017–May 31, 2019). Keith Gardner, Crown Resources, will serve as chair; Fred Chuck, HUESKER, as first vice-chair; and Doug Brown, Tensar, as second vice-chair.

Feature

Part 1: The regulation of CCR in the United States: Geosynthetics and barriers

August 1, 2017

The regulation of coal ash (coal combustion residuals or CCR) has significantly expanded the market for geosynthetics within the United States. Further, there is interest in these regulations around the globe in every country using coal as an energy source. These regulations are the result of recent environmental incidents. The regulations call for the increased …

Feature Members only content

GMA Techline

August 1, 2017

Liner repair? Pullout tests? Sewn seams? Shear strength of sludges? Geomembrane liner repair Q: I have a facility that has submitted liner repair documentation for the repair of a high-density polyethylene (HDPE) liner for a leachate/stormwater pond at an industrial landfill site. The repairs were performed using either a patch or, for indentations and small …

Feature

CCR management using geotextile tubes

August 1, 2017

Introduction Since the late 1800s, coal has played a leading role in U.S. production of electrical energy. Coal-fired power plants have provided reliable electrical power from the earliest days when power plants were run with hand-fed coal to heat boilers to produce steam. The introduction of pulverized coal led to improvements in the electrical-generation process …

Feature

Using geosynthetics for macroencapsulation for CCR on-site clean closure

August 1, 2017

Coal combustion residuals (CCR) have been used for many years in the construction of berms and engineered structural fill applications, including embankments for highways, dikes, and levees. However, large, unencapsulated structural fill projects have become a focus of environmental concerns due to potential leaching of metals and structural failures. Cap-in-place of CCR surface impoundments is …

Containment Members only content

Achieving zero leaks on a budget with geomembranes

June 1, 2017

For more than 30 years, the geomembrane industry has been told that “all geomembranes leak” (Giroud 1984), as if this were some foregone conclusion no matter what might happen from geomembrane manufacturing to the time it is put into service. But recently, the idea of “zero leaks” has been a hot topic at industry conferences, …

Case Study

History of geosynthetics use on national forest roads

June 1, 2017

Introduction The objectives of this article are to document the long history of geosynthetic materials used in the U.S. Department of Agriculture (USDA) Forest Service and other rural roads, to document the many creative and useful ways geosynthetics have been used, and to promote the cost-effective uses of geosynthetics in road projects today, particularly on …

Case Study Members only content

Protecting geomembranes from animal damage

June 1, 2017

Resisting animal and insect attacks on geomembranes is an interesting problem. Geomembrane installers and manufacturers have had numerous geomembranes damaged by bears, deer, coyotes, birds, beavers, and ground squirrels (Figures 1 and 2). In most cases, the damage is incidental to something else the animal is seeking. Deer damage the liner with their hooves trying …

Case Study

Part 2: New design models for MSE walls and slopes

June 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 a …

Feature Members only content

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

GMA Techline

August 1, 2017

Liner repair? Pullout tests? Sewn seams? Shear strength of sludges? Geomembrane liner repair Q: I have a facility that has submitted liner repair documentation for the repair of a high-density polyethylene (HDPE) liner for a leachate/stormwater pond at an industrial landfill site. The repairs were performed using either a patch or, for indentations and small …

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 …

Industry News

President Trump speaks on infrastructure

August 15, 2017

President Donald J. Trump will speak to the public on the nation’s infrastructure at 3:45 p.m. EDT on August 15, 2017. The president’s remarks can be viewed online at https://www.whitehouse.gov/live/president-trump-gives-statement-infrastructure-discussion.

Industry News

Sustainable building and construction trade mission to Mexico

August 15, 2017

The deadline to join the United States Department of Commerce’s Sustainable Building and Construction Trade Mission to Mexico is imminent. This tailored trade mission will include representatives from U.S. companies and U.S. trade associations with members that provide green, innovative, and sustainable products and services to the commercial, industrial, and residential construction sectors from October 16-20, …

Industry News

The Geosynthetic Institute announces 2017–18 fellowships

August 15, 2017

The Geosynthetic Institute (GSI), with the guidance of the GSI board of directors, announced their fellowship awards for the 2017–18 academic year. The program recognizes and supports outstanding students from around the world studying geosynthetics. The GSI fellowship program includes candidates pursuing a master’s degree or a doctoral degree. The amount for each fellowship recipient …

Industry News

OSHA launches injury-tracking system

August 14, 2017

The Occupational Safety and Health Administration (OSHA) launched its web-based Injury Tracking Application (ITA) on Aug. 1, and extended the deadline for submitting 2016 injury and illness data to Dec. 1, 2017. The reporting requirements are part of a final rule issued in October 2016 to improve tracking of workplace injuries and illnesses. The new …

Company News

Elastec’s American Marine division celebrates 50 years of manufacturing

August 11, 2017

In 1967 in Cocoa, Fla., the late Jim Pearce formed a new company to help control water pollution: American Marine. An early innovator in the development of oil containment booms, fire booms and turbidity curtains, Pearce initially developed Hull Guards, devices used to help small boat owners keep the bottom of their vessels free of …

Industry News

Strata Systems launches engineering software platform for GRS

August 10, 2017

Strata Systems, Inc., a manufacturer and distributor of geosynthetic soil stabilization products, recently launched the latest version of StrataPro, an engineering software platform that gives designers the ability to analyze a variety of faced systems on geosynthetically reinforced soil (GRS) structures. Strata says the platform, which is available through its website, will help designers determine …

Industry News

TRB hosts webinar on airport stormwater management

August 9, 2017

The Transportation Research Board (TRB) will conduct a webinar on September 14, 2017, from 2:00 p.m. to 3:30 p.m. EDT discussing research that may help airport environmental practitioners understand the environmental regulations and permitting programs that apply to airports’ management of stormwater and other types of water resources. This webinar is sponsored by the Airport …

Industry News

HUESKER offers free webinar on using GRS for retaining structures

August 3, 2017

HUESKER is presenting a free webinar on using geosynthetic reinforced soil (GRS) for retaining structures on August 24, 2017, at 1:30 p.m. EDT. Hosted by HUESKER Engineering Department head Lilma Schimmel, the webinar will offer an overview of using GRS technology for safe construction of steepened, settlement-resistant walls and slopes. The low-cost method includes fast, …

Industry News

USDOT announces proposed rule to streamline public-private transit projects

August 2, 2017

The U.S. Department of Transportation’s (USDOT) Federal Transit Administration (FTA) announced on July 31, 2017, a proposal to facilitate public-private partnerships in public transportation. If adopted, the Private Investment Project Procedures (PIPP) for public transportation capital projects rule would help the federal government develop more effective approaches to spurring private participation and investment in project …

GMA News

Gardner, Chuck, and Brown re-elected

August 2, 2017

Before adjourning the April 26 executive council meeting, the council unanimously re-elected GMA’s leaders each to another two-year term (June 1, 2017–May 31, 2019). Keith Gardner, Crown Resources, will serve as chair; Fred Chuck, HUESKER, as first vice-chair; and Doug Brown, Tensar, as second vice-chair.

Feature Members only content

GMA Techline

August 1, 2017

Liner repair? Pullout tests? Sewn seams? Shear strength of sludges? Geomembrane liner repair Q: I have a facility that has submitted liner repair documentation for the repair of a high-density polyethylene (HDPE) liner for a leachate/stormwater pond at an industrial landfill site. The repairs were performed using either a patch or, for indentations and small …

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 …