Industry News

IDOT to spend $110 million on Interstate infrastructure

April 24, 2017

The Iowa Department of Transportation (IDOT) announced $110 million in Interstate infrastructure spending around the city of Council Bluffs in 2017, part of the largest highway funding effort in history by IDOT. The projects include new onramps, highway bridge construction, paving, railroad bridge reconstruction, and sewer work. IDOT is also in the planning stages of …

Industry News

AFM releases Radon Guard

April 21, 2017

AFM Corporation of Lakeville, Minn., announced the release of Radon Guard, a product that mitigates radon and other subsurface gases through effective ventilation. It simultaneously acts as an underslab insulation (R-10 min.), and provides a capillary break. “Unfortunately, risk of exposure to radon is prevalent in much of the United States,” says AFM Corporation president, …

Industry News

Need help deciphering military specifications?

April 20, 2017

The Industrial Fabric Association International’s Military Division is offering a free webinar for industry professionals on May 4, 2017, at noon EST, entitled “MIL-SPECS: Get the Facts and Gain a Competitive Edge.” The webinar will provide an in-depth analysis of the scope of a Detail Specification, along with a Q&A session. This webinar will help …

Industry News

GSI offers webinar on geosynthetics in heap leach mining

April 19, 2017

The Geosynthetic Institute (GSI) will offer a webinar on “Geosynthetic Applications Used in Heap Leach Mining,” on April 26, 2017, from 11:30 a.m. to 1 p.m. EDT. The chemical extraction of precious metals from low grade ore and tailings has been ongoing since the 1950s. Gold, silver and copper are the general targets, wherein heaps …

Industry News

FHWA provides $9 million for transportation projects on tribal lands

April 19, 2017

The Federal Highway Administration’s (FHWA) Tribal Transportation Program Safety Fund (TTPSF) is providing $9 million for 77 projects aimed at improving transportation safety on tribal lands. “Transportation is a key to accessing opportunity and we are committed to helping make travel safer on tribal roads,” said Secretary of Transportation Elaine Chao. “These funds will assist …

Industry News

Internship resources now available to IFAI members

April 18, 2017

Investing in the industry is something the Industrial Fabrics Association International (IFAI) and members prioritize. These investments help ensure the growth of the many companies within the association. With this mission in mind, it is vital to continue the tradition of hiring ambitious individuals to join the industry and drive it into the future. Finding …

Industry News

Huesker establishes Australian subsidiary

April 17, 2017

Following the recent acquisition of NBW Mining (Aust) Pty Ltd, the Huesker Group announced April 13, 2017, the establishment of Huesker Australia Pty Ltd. Huesker Australia will better enable the group to serve clients in Australasia. “We will service and supply the infrastructure, civil, environmental, and hydraulic construction and engineering industries [in Australasia] directly,” said …

Industry News

Road contractor employment grew 8.2 percent in February

April 13, 2017

The American Road and Transportation Builders Association (ARTBA) announced workers employed by highway, street and bridge contractors grew 8.2 percent in February compared to the same month in 2016, representing a net increase of roughly 20,300 workers. Total workers employed reached 267,400, the highest mark for February since 2008. To view ARTBA’s full labor report …

Industry News

Utah DOT top 10 projects for 2017

April 13, 2017

The Utah Department of Transportation (UDOT) announced its Top 10 Pr­­­­ojects list for the 2017 construction season April 12. This year’s top project will build five freeway-like interchanges on Bangerter Highway in the southwest Salt Lake Valley over the next two years. The $249 million project will be completed in late 2018. UDOT has 180 …

Industry News

FHWA releases $768.2 million in emergency funds for roads and bridges

April 11, 2017

The Federal Highway Administration (FHWA) made available $768.2 million for emergency repair work on roads and bridges damaged by storms or catastrophic events in 40 states. Funded through the Emergency Relief (ER) program, it is one of the largest single awards for such repair work made by the federal government. “Transportation is a lifeline for …

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

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

IDOT to spend $110 million on Interstate infrastructure

April 24, 2017

The Iowa Department of Transportation (IDOT) announced $110 million in Interstate infrastructure spending around the city of Council Bluffs in 2017, part of the largest highway funding effort in history by IDOT. The projects include new onramps, highway bridge construction, paving, railroad bridge reconstruction, and sewer work. IDOT is also in the planning stages of …

Industry News

AFM releases Radon Guard

April 21, 2017

AFM Corporation of Lakeville, Minn., announced the release of Radon Guard, a product that mitigates radon and other subsurface gases through effective ventilation. It simultaneously acts as an underslab insulation (R-10 min.), and provides a capillary break. “Unfortunately, risk of exposure to radon is prevalent in much of the United States,” says AFM Corporation president, …

Industry News

Need help deciphering military specifications?

April 20, 2017

The Industrial Fabric Association International’s Military Division is offering a free webinar for industry professionals on May 4, 2017, at noon EST, entitled “MIL-SPECS: Get the Facts and Gain a Competitive Edge.” The webinar will provide an in-depth analysis of the scope of a Detail Specification, along with a Q&A session. This webinar will help …

Industry News

GSI offers webinar on geosynthetics in heap leach mining

April 19, 2017

The Geosynthetic Institute (GSI) will offer a webinar on “Geosynthetic Applications Used in Heap Leach Mining,” on April 26, 2017, from 11:30 a.m. to 1 p.m. EDT. The chemical extraction of precious metals from low grade ore and tailings has been ongoing since the 1950s. Gold, silver and copper are the general targets, wherein heaps …

Industry News

FHWA provides $9 million for transportation projects on tribal lands

April 19, 2017

The Federal Highway Administration’s (FHWA) Tribal Transportation Program Safety Fund (TTPSF) is providing $9 million for 77 projects aimed at improving transportation safety on tribal lands. “Transportation is a key to accessing opportunity and we are committed to helping make travel safer on tribal roads,” said Secretary of Transportation Elaine Chao. “These funds will assist …

Industry News

Internship resources now available to IFAI members

April 18, 2017

Investing in the industry is something the Industrial Fabrics Association International (IFAI) and members prioritize. These investments help ensure the growth of the many companies within the association. With this mission in mind, it is vital to continue the tradition of hiring ambitious individuals to join the industry and drive it into the future. Finding …

Industry News

Huesker establishes Australian subsidiary

April 17, 2017

Following the recent acquisition of NBW Mining (Aust) Pty Ltd, the Huesker Group announced April 13, 2017, the establishment of Huesker Australia Pty Ltd. Huesker Australia will better enable the group to serve clients in Australasia. “We will service and supply the infrastructure, civil, environmental, and hydraulic construction and engineering industries [in Australasia] directly,” said …

Industry News

Road contractor employment grew 8.2 percent in February

April 13, 2017

The American Road and Transportation Builders Association (ARTBA) announced workers employed by highway, street and bridge contractors grew 8.2 percent in February compared to the same month in 2016, representing a net increase of roughly 20,300 workers. Total workers employed reached 267,400, the highest mark for February since 2008. To view ARTBA’s full labor report …

Industry News

Utah DOT top 10 projects for 2017

April 13, 2017

The Utah Department of Transportation (UDOT) announced its Top 10 Pr­­­­ojects list for the 2017 construction season April 12. This year’s top project will build five freeway-like interchanges on Bangerter Highway in the southwest Salt Lake Valley over the next two years. The $249 million project will be completed in late 2018. UDOT has 180 …

Industry News

FHWA releases $768.2 million in emergency funds for roads and bridges

April 11, 2017

The Federal Highway Administration (FHWA) made available $768.2 million for emergency repair work on roads and bridges damaged by storms or catastrophic events in 40 states. Funded through the Emergency Relief (ER) program, it is one of the largest single awards for such repair work made by the federal government. “Transportation is a lifeline for …

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 …