Company News

HUESKER Inc. celebrates 30 years

April 8, 2021

April 4, 2021, marked an exciting milestone for HUESKER Inc. as the company celebrated its 30th anniversary. HUESKER Inc. is one of the leading manufacturers of geosynthetics in North America. Over the past 30 years, HUESKER Inc. has provided quality geotextiles along with innovative engineering solutions and excellent customer service. The company’s team of engineers …

Company News

WSP acquires Golder and announces an executive leadership appointment in Canada

April 8, 2021

WSP Global Inc. has completed its previously announced acquisition of Enterra Holdings Ltd., the holding company of Golder Associates. Golder is a global consulting firm with approximately 7,000 employees and 60 years of experience in providing earth sciences and environmental consulting services. The aggregate cash consideration payable in connection with the acquisition is approximately US$1.14 …

Company News

Solmax acquires TenCate Geosynthetics

April 8, 2021

Solmax announced it has reached an agreement with Koninklijke TenCate (the Netherlands) on the acquisition of TenCate Geosynthetics, a global provider of geosynthetics and industrial fabrics. Caisse de Dépôt et Placement du Québec (CDPQ) and Fonds de Solidarité FTQ, Solmax’s long-term financial partners, are both investing in this transaction.   “This is the joining of two …

Case Study

Fabtech Australia replaces huge anaerobic lagoon geosynthetic cover

April 7, 2021

Goulburn Valley Water in Australia has undertaken upgrade work to the 266-million-gallon (50-megaliter) High Rate Anaerobic Lagoon (HRAL) located at their Daldy Road, Shepparton, Victoria, waste management facility. The lagoon has an area of 538,196 square feet (50,000 m2). The upgrade work includes removing the existing cover, which has reached the end of its service …

Industry News

ASCE president issues statement on American Jobs Plan proposal

April 1, 2021

The American Society of Civil Engineers (ASCE) applauds President Joseph R. Biden’s American Jobs Plan, a truly historic proposal for modernizing and improving the nation’s infrastructure, said Jean-Louis Briaud, Ph.D., P.E., president, ASCE. The society urges Congress and the Biden Administration to now work together to develop a comprehensive, bipartisan infrastructure bill that will set …

GMA Techline

GMA Techline: Anchors, tie-rods and whalers

April 1, 2021

Q: We are having issues related to obstructions in the reinforced zone of our mechanically stabilized earth (MSE) retaining walls. In the first case, there is a rock outcrop that is limiting the length of the geogrid reinforcement. In the second case, we have a drop-down inlet structure to divert stormwater, which is in the …

GMA Techline

GMA Techline: GRI-GM19 peel specification

April 1, 2021

Q: Our liner system is a double composite and along a western tie-in. We need to extrusion-weld the secondary 60-mil (1.5-mm) HDPE (new cell) to an existing secondary 40-mil (1-mm) HDPE (old cell), and the state is continuing to have issues with the fact that we are using the 40-mil (1-mm) GRI-GM19 peel specification as …

Feature

Comparative analysis of the flow and filtration capabilities of sediment retention devices—Part 2

April 1, 2021

By James E. Sprague and C. Joel Sprague Sediment retention devices (SRDs) include silt fences, wattles, filter logs, compost socks and various types of stormwater inlet protectors. They are a widely used best management practice (BMP) to provide sediment filtration from stormwater runoff while allowing water passage. However, SRD performance varies greatly in flow rate …

GMA News

Chair’s corner and GMA happenings

April 1, 2021

By Bryan Gee What’s in a name? For those of us who work in the geosynthetics industry, this question may be more important than you think. A recent call with a high-level federal policy maker brought this home to me. With no prior knowledge of our industry, this person did not understand what geosynthetic materials …

Editorial

Three very different uses of geosynthetics

April 1, 2021

In this April/May issue of Geosynthetics magazine, our feature authors tackle three very different uses of geosynthetics with in-depth examination, testing and even a new design method.  In the introduction to their article, “Modular Geosynthetics Construction,” E. Silva, T. D. Stark and Duff Simbeck discuss the benefits of a specific manufacturing process for geomembranes. They …

Expo News

Standard for active illumination developed in Europe

November 16, 2020

In a session at IFAI Virtual Expo 2020, “Smart Textiles Standardization, Active Illumination,” Dr. Jan Beringer, senior scientific expert Hohenstein Group, explained the new standard for active illumination that will soon be implemented in European Union countries.  Organizations worked together to develop the standards. It is notable, he said that both textile and electronics industries …

Expo News

Rapid prototyping = faster market launch

November 16, 2020

A presentation at IFAI Virtual Expo 2020, titled, “Rapid Prototyping and Textile Product Development” urged attendees to use “sticks and glue … whatever method you have to get your idea out there.” The presenter, Dr. Andre West, director of the Zeis Textiles Extension (ZTE), Wilson College of Textiles, NC State University, may not have meant …

Expo News

The larger issues in respiratory protection

November 12, 2020

Dr. Bryran Ormond, assistant professor, Wilson College of Textiles, NC State explained respiratory protection in an “Ask an Expert” session with Jing Liang, Medical PPE Consulting LLC. Dr. Ormand has typically worked in the area of chemical and biological protective equipment, but with the onslaught of the pandemic, began to focus on respiratory protection generally, …

Expo News

Rodgers: Textiles are the “T” in STEM

November 11, 2020

How do you create a channel from research to application? How do you create a pathway toward understanding complex human problems across supply chains and market sectors? STEM—a curriculum based on teaching science, technology, engineering and math—has branched out from basic chemistry and biology and physics classes, into collaborative efforts, including textiles, according to Stephanie …

Expo News

Partnerships in smart textile products

November 11, 2020

The second week of IFAI’s Virtual Expo 2020 advanced textiles educational sessions began with a presentation that illustrated the importance of collaboration. “Smart textiles for healthcare and wellbeing: a collaborative approach” had three presenters speaking from different perspectives, but with one, unified message about reaching across geographical distance and areas of expertise to create successful …

Expo News

Guidance offered in commercial insurance market

November 10, 2020

Wildfires, hurricanes, a pandemic and civil unrest have wreaked plenty of chaos on the commercial insurance market in 2020. Steve Christenson, with Marsh & McLennan Agency LLC, offered guidance to business owners Nov. 9 at IFAI Virtual Expo 2020. “The business insurance market has been going through several changes this year,” says Christenson, with U.S. …

Expo News

How to make your business attractive to a buyer

November 6, 2020

Thinking about selling your business—either to an outside party or the next generation? Then it’s time to start considering how your equipment and processes fit into your succession plan. Jonathan Palmer, the second-generation owner and CEO of equipment supplier Autometrix, and Autometrix director of global sales Truy Pham, led an educational session at IFAI Virtual …

Expo News

Research and development partnerships work one-on-one

November 6, 2020

The process of working with a research and development center was discussed in Dr. Thomas Stegmaier’s presentation, “Testing and Standards Integral to Timely Product Development.” Dr. Stegmaier is with DITF [Deutsche Institute Fur Textil Und Faserforschung Denkendorf], a large, textile research center located in Germany. It partners individually with industry participants to develop new technologies …

Expo News

Responsive textiles with infrared technology

November 5, 2020

In a presentation titled, “Amplifying Human Energy to Drive Performance and Recovery,” Hologenix LLC co-founder and CEO Seth Casden described the company’s Celliant® technology and explained how responsive textiles using infrared energy can increase tissue oxygen levels, which can improve athletic performance and recovery, sleep quality and general health and wellness.  All sentient beings emit …

Expo News

A primer on Employee Stock Ownership Plans (ESOPs)

November 5, 2020

An Employee Stock Ownership Plan (ESOP) offers lots of attractive benefits: studies have shown that ESOPs improve productivity, increase sales and improve return on assets, plus they offer great tax advantages. But more than any of these attributes, an ESOP offers the owner of a company peace of mind and an enduring legacy. “Many times, …

Case Study

Fabtech Australia replaces huge anaerobic lagoon geosynthetic cover

April 7, 2021

Goulburn Valley Water in Australia has undertaken upgrade work to the 266-million-gallon (50-megaliter) High Rate Anaerobic Lagoon (HRAL) located at their Daldy Road, Shepparton, Victoria, waste management facility. The lagoon has an area of 538,196 square feet (50,000 m2). The upgrade work includes removing the existing cover, which has reached the end of its service …

GMA Techline

GMA Techline: Anchors, tie-rods and whalers

April 1, 2021

Q: We are having issues related to obstructions in the reinforced zone of our mechanically stabilized earth (MSE) retaining walls. In the first case, there is a rock outcrop that is limiting the length of the geogrid reinforcement. In the second case, we have a drop-down inlet structure to divert stormwater, which is in the …

GMA Techline

GMA Techline: Geomembranes for reinforcement?

April 1, 2021

Q: We are using Robert Koerner’s Designing with Geosynthetics to calculate the required thickness of a geomembrane. See Figure 1 and Equation 1 from the book for details. Can you point us in the right direction with the mobilization distance, x? A: Yes, please see Figure 2 for high-density polyethylene (HDPE). It shows ASTM D6706 …

GMA Techline

GMA Techline: Installing a geomembrane low to high gradient?

April 1, 2021

Q: We are a large liner installation firm that has been asked to install a geomembrane liner from low gradient to high gradient. Is this the new normal? A: This is not normal, and we suggest you strongly object to this recommendation. There are many stakeholders in regard to panel layout (i.e., installer, general contractor, …

GMA Techline

GMA Techline: GRI-GM19 peel specification

April 1, 2021

Q: Our liner system is a double composite and along a western tie-in. We need to extrusion-weld the secondary 60-mil (1.5-mm) HDPE (new cell) to an existing secondary 40-mil (1-mm) HDPE (old cell), and the state is continuing to have issues with the fact that we are using the 40-mil (1-mm) GRI-GM19 peel specification as …

Feature

Modular geosynthetics construction

April 1, 2021

By E. Silva, T. D. Stark and Duff Simbeck Modular construction is a process in which a building or other item is constructed primarily off-site; under controlled factory conditions; and using the same design, materials, equipment, testing and construction quality control and assurance (CQC/CQA) techniques as a field-constructed facility—but usually in about one-half the time …

GMA Techline

GMA Techline: Concrete interlayers

April 1, 2021

Q: We are interested in using a geotextile as an “unbonded concrete interlayer” over existing concrete pavement to float the new slab over deteriorated pavement, instead of a thin asphalt layer. Do you have any guidance for us in this regard? A: Over the past several years, 16-ounce-per-square-yard (542-g/m2) nonwoven needlepunched geotextiles have been used …

Feature

Development of a new design method for geosynthetic-reinforced RPEs

April 1, 2021

By Pietro Rimoldi and Nicola Brusa Rapid and extreme climate change is putting our planet under stress. As a consequence, in mountain and hilly regions, infrastructure and people are more often threatened by quick and unpredictable rockfall events. Falling boulders can have extremely high speeds, exceeding 11 mph (5 m/s) and up to 67 mph …

Feature

Comparative analysis of the flow and filtration capabilities of sediment retention devices—Part 2

April 1, 2021

By James E. Sprague and C. Joel Sprague Sediment retention devices (SRDs) include silt fences, wattles, filter logs, compost socks and various types of stormwater inlet protectors. They are a widely used best management practice (BMP) to provide sediment filtration from stormwater runoff while allowing water passage. However, SRD performance varies greatly in flow rate …

Case Study

Presto GeoSystems installs GEOWEB geocells under Tasmanian road

March 30, 2021

The Huon Valley Council is situated south of Hobart—the southernmost local government council in Australia. Esperance Coast Road, Huon Valley, Tasmania, was showing several signs of deterioration along its length, including deformation, cracks and edge failure. To mitigate this, Huon Valley Council enlisted consultant Pitt and Sherry to undertake pavement investigations, focusing on the section …

GMA Techline

GMA Techline: Anchors, tie-rods and whalers

April 1, 2021

Q: We are having issues related to obstructions in the reinforced zone of our mechanically stabilized earth (MSE) retaining walls. In the first case, there is a rock outcrop that is limiting the length of the geogrid reinforcement. In the second case, we have a drop-down inlet structure to divert stormwater, which is in the …

GMA Techline

GMA Techline: Geomembranes for reinforcement?

April 1, 2021

Q: We are using Robert Koerner’s Designing with Geosynthetics to calculate the required thickness of a geomembrane. See Figure 1 and Equation 1 from the book for details. Can you point us in the right direction with the mobilization distance, x? A: Yes, please see Figure 2 for high-density polyethylene (HDPE). It shows ASTM D6706 …

GMA Techline

GMA Techline: Installing a geomembrane low to high gradient?

April 1, 2021

Q: We are a large liner installation firm that has been asked to install a geomembrane liner from low gradient to high gradient. Is this the new normal? A: This is not normal, and we suggest you strongly object to this recommendation. There are many stakeholders in regard to panel layout (i.e., installer, general contractor, …

GMA Techline

GMA Techline: GRI-GM19 peel specification

April 1, 2021

Q: Our liner system is a double composite and along a western tie-in. We need to extrusion-weld the secondary 60-mil (1.5-mm) HDPE (new cell) to an existing secondary 40-mil (1-mm) HDPE (old cell), and the state is continuing to have issues with the fact that we are using the 40-mil (1-mm) GRI-GM19 peel specification as …

GMA Techline

GMA Techline: Concrete interlayers

April 1, 2021

Q: We are interested in using a geotextile as an “unbonded concrete interlayer” over existing concrete pavement to float the new slab over deteriorated pavement, instead of a thin asphalt layer. Do you have any guidance for us in this regard? A: Over the past several years, 16-ounce-per-square-yard (542-g/m2) nonwoven needlepunched geotextiles have been used …

GMA Techline

The GMA Techline

February 1, 2021

Moderated by George R. Koerner BIOLOGICAL DEGRADATION OF PE AND PP Q: Can you please enlighten me on the biological degradation of polyolefin polyethylene (PE) and polypropylene (PP)? A: Within the various plant forms of biological life, i.e., bacteria, actinomycetes, fungi and algae, polymer degradation is essentially nonexistent due to high molecular weight of the common …

GMA Techline

The GMA Techline

October 1, 2020

Moderated by George R. Koerner Puncture after NDT Q: I would like your opinion on the fate of punctures in the air channel leftover from nondestructive air channel tests (NDTs), specifically in regard to sealing the air channels to prevent leachate or water ingress. We are particularly concerned with this situation on a landfill cover …

GMA Techline

The GMA Techline

August 1, 2020

Seaming dissimilar geomembranes Q: I kindly request your technical support in the questions below: A nonpolyethylene geomembrane was used in phase 1 of the tailings dam waterproofing system of a gold mine. For the expansion (phase 2), the use of a high-density polyethylene (HDPE) geomembrane is being evaluated. How can the HDPE geomembrane join the bituminous …

GMA Techline

The GMA Techline

June 1, 2020

Moderated by George R. Koerner Minimum sediment thickness Q: We are going to construct some evaporation ponds on existing sediment on top of a Hypalon geomembrane. The sediment looks to be predominantly fine. The subgrade condition below the liner is not known for sure. In such conditions, can you recommend a minimum sediment thickness that …

GMA Techline

The GMA Techline

April 1, 2020

Moderated by George R. Koerner and Y. “Grace” Hsuan Welding Rod Q: This question is in regard to the welding rod intended for welding of geomembranes (both high-density polyethylene [HDPE] and linear low-density polyethylene [LLDPE]). Are there any GRI GM13- or GM17-based requirements for welding rods or are there any white papers or specifications? I …

Company News

HUESKER Inc. celebrates 30 years

April 8, 2021

April 4, 2021, marked an exciting milestone for HUESKER Inc. as the company celebrated its 30th anniversary. HUESKER Inc. is one of the leading manufacturers of geosynthetics in North America. Over the past 30 years, HUESKER Inc. has provided quality geotextiles along with innovative engineering solutions and excellent customer service. The company’s team of engineers …

Company News

WSP acquires Golder and announces an executive leadership appointment in Canada

April 8, 2021

WSP Global Inc. has completed its previously announced acquisition of Enterra Holdings Ltd., the holding company of Golder Associates. Golder is a global consulting firm with approximately 7,000 employees and 60 years of experience in providing earth sciences and environmental consulting services. The aggregate cash consideration payable in connection with the acquisition is approximately US$1.14 …

Company News

Solmax acquires TenCate Geosynthetics

April 8, 2021

Solmax announced it has reached an agreement with Koninklijke TenCate (the Netherlands) on the acquisition of TenCate Geosynthetics, a global provider of geosynthetics and industrial fabrics. Caisse de Dépôt et Placement du Québec (CDPQ) and Fonds de Solidarité FTQ, Solmax’s long-term financial partners, are both investing in this transaction.   “This is the joining of two …

Industry News

ASCE president issues statement on American Jobs Plan proposal

April 1, 2021

The American Society of Civil Engineers (ASCE) applauds President Joseph R. Biden’s American Jobs Plan, a truly historic proposal for modernizing and improving the nation’s infrastructure, said Jean-Louis Briaud, Ph.D., P.E., president, ASCE. The society urges Congress and the Biden Administration to now work together to develop a comprehensive, bipartisan infrastructure bill that will set …

GMA News

Chair’s corner and GMA happenings

April 1, 2021

By Bryan Gee What’s in a name? For those of us who work in the geosynthetics industry, this question may be more important than you think. A recent call with a high-level federal policy maker brought this home to me. With no prior knowledge of our industry, this person did not understand what geosynthetic materials …

IGS-NA (NAGS)

Update from IGS-NA

April 1, 2021

by John Allen The IGS North America (IGS-NA) board is working diligently on diversity within its membership and representatives. The organization is expanding the number of liaisons to the board to include all the major North American technical societies that influence geosynthetics. IGS-NA provides the best vehicle for disseminating research on geosynthetics, as it connects …

GSI News

A new specification for geotextile grout filled mattresses

April 1, 2021

By George R. Koerner Geotextile grout filled mattresses (GGFM), also referred to (in ASTM D18.25/D35.05) as fabric-formed concrete (FFC) or fabric-formed concrete revetments (FFCR), are erosion-resistant concrete linings made from durable, permeable fabric forms that are filled with high-strength grout. GGFMs are generally sloping structures placed on shorelines to absorb the energy of incoming water. …

Events

The 2022 Global Waste Management Symposium now accepting abstracts

March 31, 2021

The Global Waste Management Symposium (GWMS), to be held Feb. 13–16, 2022, in Indian Wells, Calif., is the leading forum for the presentation of applied and fundamental research, case studies, and policy analysis on solid waste and materials management. GWMS invites researchers, engineers, designers, academicians, students, facility owners and operators, regulators and policymakers to participate. GWMS …

Industry News

IGS says geosynthetics make significant contributions toward UN Sustainable Development Goals

March 29, 2021

The 17 Sustainable Development Goals (SDG) of the United Nations (UN) are a call to action for countries to unite to improve lives and protect the environment, the International Geosynthetics Society (IGS) said. Its remit is bold—from tackling climate change to supporting gender equality, from responsible production to championing peace and justice worldwide. The IGS …

Company News

Layfield Group to distribute Tensar products in Canada

March 26, 2021

Layfield Group announced an agreement with Tensar International Corp. for Canadian distribution of Tensar geosynthetics products. Tensar is the industry leader in soil stabilization and reinforcement. Over the past three decades, the company has developed products and technologies that have been at the forefront of the geotechnical industry. As a result, you know you can …

Events

Webinar: Geosynthetics for coal combustion residual (CCR) applications

June 11, 2019

The Fabricated Geomembrane Institute (FGI) will sponsor a free webinar, “Geosynthetics for Coal Combustion Residual (CCR) Applications,” on June 25, from 12 p.m. to 1 p.m. CDT. This webinar will discuss the application of geosynthetic products for use in coal combustion residual (CCR) landfills and impoundments. The webinar will provide an overview of the available …

Industry News

Applications being accepted for DFI’s Women in Deep Foundations professional development grants

April 1, 2019

The DFI Educational Trust and the DFI Women in Deep Foundations Committee are awarding five grants of $1,750 each to women involved in design and/or construction of deep foundations to attend DFI’s 44th Annual Conference on Deep Foundations in Chicago, Oct. 15–18, 2019. The grant includes free conference registration and covers related expenses for attending …

Geogrids

Modeling demonstrates benefit of geogrid-reinforced aggregate base

December 21, 2018

Improved modeling of geogrid for use with the Minnesota Department of Transportation’s pavement design software, MnPAVE Flexible, will allow pavement designers to simulate field tests of stiffness and resiliency in pavements over bases with and without geogrid. The department, known as MnDOT, is using modeling results from a recent study to develop a design input that quantifies the …

Events

GSI to host short course on QA/QC in waste containment, GMA members get discounted rates

December 20, 2018

The Geosynthetic Institute (GSI) will sponsor a short course “Quality Assurance/Quality Control of Geosynthetics in Waste Containment Facilities,” Jan. 14–16, 2019, from 11 a.m. to 12:30 p.m. and 2 p.m. to 3:30 pm EST. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. This …

Industry News

FGI offers webinar on shear testing

December 17, 2018

The Fabricated Geomembrane Institute (FGI) will sponsor a free webinar “Geosynthetic Interface Shear Testing,” on Jan. 22, 2019, from noon to 1 p.m. CDT. In this presentation, Robert Swan of Drexel University will discuss the different methods of measuring geosynthetic interface shear strength, describe industry standard test methods and explore the accreditation process for laboratories …

Events

Christopher to present Koerner lecture series on ‘lessons learned’

December 14, 2018

Barry R. Christopher, Ph.D., P.E., will present the first in the 2019 Dr. Robert M. Koerner Award and Lecture Series on “Lessons Learned: An Adventure in 4 Decades of Geosynthetics Engineering” on Feb. 13, 2019, at the Geosynthetics Conference 2019 in Houston, Texas. The presentation will review his involvement in the development of geosynthetics engineering …

Company News

EPT introduces new string-reinforced LLDPE geomembrane

December 13, 2018

To meet the growing demand for linear low density polyethylene (LLDPE) by geomembrane fabricators and installers, Engineered Polymer Technologies (EPT) has announced a new string-reinforced LLDPE fabric. LLDPE has been in increasing demand due to its superior flexibility and better layflat versus high density polyethylene (HDPE). EPT has specially formulated its LLDPE fabric for high …

Industry News

FGI accepting applications for engineering innovation award

November 30, 2018

The Fabricated Geomembrane Engineering Innovation Award was created to recognize engineers who have creatively used fabricated geomembranes to successfully fulfill a client/owner’s needs, including technical requirements, scheduling and budget. Today’s engineers are working to solve environmental issues on a global scale. The Fabricated Geomembrane Institute’s (FGI’s) Fabricated Geomembrane Engineering Innovation Award competition pays tribute to …

GSI News

GSI to host webinar on stability designs for landfill covers, GMA members get discounted rates

November 29, 2018

The Geosynthetic Institute (GSI) will sponsor a webinar “Stability Designs of Landfill Cover Soils,” on December 12, from 11:30 a.m. to 1 p.m. EDT. GMA member companies and their employees receive discounted rates on all GSI webinar and short course registrations. This webinar focuses on the stability design of relatively thin soil layers over geosynthetics …

Industry News

Tensar to present technical seminar in Minneapolis

November 26, 2018

Tensar International Corp. will sponsor a technical seminar in Minneapolis, Minn., on Jan. 8, 2019, from 7:30 a.m. to 4 p.m. CDT. The seminar will be held at the Hyatt Regency Minneapolis. The seminar will cover a variety of geosynthetic applications, including roadways, pavement maintenance, walls and slopes, market solutions, airfields, mechanically stabilized earth (MSE) …