MSE Expert David Butchart Joins Earth Wall Products

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David Butchart has returned to the geotechnical engineering field in a new business development and strategy role with Earth Wall Products, LLC. The company provides proprietary retaining wall systems and materials for use in the construction of earth retaining walls. Some of the systems for which Earth Wall Products is known include the GRAVIX and FORIX gravity systems and the TRINITY and CREEKSI... »

PODCAST: Zornberg on Differing MSE Design Frameworks

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Mechanically stabilized earth walls have been the subject of the most read stories on Geosynthetica this year and a few of the most read stories in 2016 as well. This past spring, some of that field interest in MSE design became the focus of a unique meeting at the Geotechnical Frontiers 2017 conference. There, the ASCE Geo-Institute Technical Committee on Geosynthetics brought together leading MS... »

Fred Chuck Joins HUESKER’s Geosynthetics Team

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North Carolina-based HUESKER, Inc. oversees a broad base of geosynthetics operations in North and Central America. Over the past couple years, the company has invested significantly in new production capabilities, expanded production, and added expert personnel. The expertise level has just bumped up again, thanks to the addition of industry veteran Fred Chuck to HUESKER’s team. Fred Chuck is a li... »

FHWA Limit Equilibrium Design Framework for MSE Structures

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The innovative performance of geosynthetic reinforcement materials has led to mechanically stabilized earth walls and slopes becoming a mainstay of modern infrastructure—particularly with highways and commercial development. However, agreement is not so easy to find on the design framework best suited to consistent long-term performance and safe engineering and construction. Failures are rare, but... »

Design Frameworks for Geosynthetic-Reinforced Walls

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During Geotechnical Frontiers 2017 in Orlando, the Technical Committee – Geosynthetics from ASCE’s Geo-Institute will hold a special working committee meeting on Design Frameworks for Geosynthetic-Reinforced Walls. The gathering is certain to draw attention, promoting discussion at the conference and providing potential and highly beneficial input to future designs. Geotechnical Frontiers 2017 tak... »

34m High MSE Walls for Cerro Verde Copper Mine Crushers

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By Terre Armée – In order to support the significant production increase at the Cerro Verde copper mine, Tierra Armada Perú was requested by the owner, Sociedad Minera Cerro Verde S.A.A. (SMCV), to design and supply the specific components for two 34-meter-high mechanically stabilized earth walls to support two primary crushers.  The walls needed to facilitate the maneuvers for dump trucks weighin... »

US Congress Agrees on 5-Year Transportation Bill

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After a month of negotiations and bicameral conference meetings, the US House and Senate have come to an agreement on a USD $281 billion transportation bill. The Associated Press’s Joan Lowy notes that the finalized bill, which is expected to be filed Tuesday afternoon (December 1), will increase highway spending by nearly 15% and transit spending by 18%. AASHTO was quick to share the news i... »

Transportation Bill Shows Promise, Including for Geosynthetics

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On November 5, the US House of Representatives passed a six-year extension for the Highway Trust Fund. The House bill was overwhelmingly approved (363 – 64), which now makes it possible for a conference committee to bridge the gap between the House and Senate versions. The first substantially funded transportation bill in a decade seems to be on firm footing—a welcomed change in the US Congress. T... »

Last Day to Register for Plastic Pipe Short Courses in Texas

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The extended registration period for the corrugated and solid wall plastic pipe training courses in Austin, Texas comes to a close on October 2. The two 1.5-day sessions, which are part of Pipe Week professional development activities, will feature expert instruction on pipe and conduit, applications, basic polymer chemistry, resins, polymeric properties, testing, specification, long-term performa... »

Plastic Pipe Training Courses Include PPI Experts

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Pipe Week returns with two 1.5-day plastic pipe training courses. The events will be held at TRI Environmental’s Austin, Texas campus. Both corrugated (October 6 – 7) and solid wall plastic pipe (October 8 – 9) will be addressed. Major topics include pipe and conduit, applications, basic polymer chemistry, resins, polymeric properties, testing, specification, long-term performanc... »

Pipe Week Courses, October 6 – 9

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Pipe Week returns with two 1.5-day short courses to be held at TRI Environmental’s Austin, Texas campus. Both corrugated (October 6 – 7) and solid-wall plastic pipe (October 8 – 9) will be addressed. Major topics include pipe and conduit, applications, basic polymer chemistry, resins, polymeric properties, testing, specification, long-term performance, long-term hydrostatic stren... »

INTERVIEW: Polymeric Strap Reinforcement for MSE Walls

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The Transportation Research Board (TRB) Annual Meeting honored the paper “Instrumented MSE Wall Reinforced with Polyester Straps” (Paper #15-0895) with its Best Paper 2015 award from TRB’s Soil Mechanics Section. The work, which was sponsored by TRB committee AFS10 Transportation Earthworks, was co-authored by Yushan Luo, Dov Leshchinsky, Pietro Rimoldi, Giulia Lugli, and Chao Xu... »

Project Story: Reinforcing Crusher Walls

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By Maccaferri – Crusher walls, also known as mine dump walls, are used to support vertical or near-vertical grade changes to minimize the footprint of the facility. Hoppers or crushers can be installed within these walls. Mined material is hauled to the upper terrace and unloaded into the hopper/crusher. These large structures are part of the concentration facilities within the mine and crush the ... »

TRI Announces Plastic Pipe Short Course for April

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Mario Paredes, P.E., spent nearly 20 years working for Florida Department of Transportation (FDOT). His career there included a 6-year post as Florida’s State Corrosion Engineer, which included a broad level of responsibility for oversight of material durability, such as in plastic pipe applications. He’s now joined TRI Environmental as a Senior Engineer, and on April 22 and 23 he̵... »

Full-Scale Evaluation of Erosion and Sediment Control BMPs

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The December 2014 issue of Land and Water Magazine (www.landandwater.com) includes an extensive piece on “Independent, Full-Scale Evaluation of Erosion and Sediment Control BMPs.” Authored by C. Joel Sprague (TRI Environmental), Peter Kemp (Wisconsin DOT), and Katheryn Malusky (AASHTO NTPEP), the article describes the development of full-scale testing in erosion control materials, curr... »

EMPLOYMENT: East Coast Erosion Control Seeks Technical Services Manager

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BERNVILLE, Pa. – East Coast Erosion Blankets, LLC, dba East Coast Erosion Control, a privately held erosion control product manufacturing company, has an immediate employment opening for a Technical Services Manager. Competitive wages and benefits are offered. Position duties include: Provide product use expertise for distributors, end users, and customer service colleagues Maintain a working know... »

NYSDOT Approves Solmax Geomembranes

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Montreal (Qc) – 2 April 2014: Solmax is proud to announce that its HDPE geomembrane has recently been added to the New York State Department of Transportation’s (NYSDOT) approved material list. The NYSDOT’s mission is to ensure that their customers, those who live, work and travel in New York State, have a safe, efficient, balanced and environmentally sound transportation system.  As such, t... »

TenCate MiraSpec Design Software – Update Version 2

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6 March 2014 – TenCate Geosynthetics Americas is proud to reintroduce our internet based MiraSpec Design Solutions Software (www.miraspec.com). It is an easy to use software program that will assist in both flexible pavement and unpaved road design while demonstrating the many benefits of using our Mirafi® RSi-Series and H2Ri woven reinforcement & stabilization geosnthetics in roadway st... »

Pullout Performance of Strip Reinforcements for MSE Walls

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By John Sankey and Robert Lozano – For discrete reinforcing strips used in MSE walls, standards developed under the AASHTO codes have identified a method for evaluating pullout of ribbed steel reinforcements through conservative default values using a friction factor term identified as f*. A similar default basis for polymeric reinforcing strips is not available in AASHTO; only values meant ... »

NCDOT Updates Geotextile Specifications

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In a letter dated 20 August 2013, the North Carolina Department of Transportation (NCDOT) announced an update to its geotextile Approved Products List (APL). This impacts all geotextiles to be considered under Types 1 – 5 and for Pavement Stabilization in project specifications. “This new checklist is more detailed and coincides with NTPEP’s recent updates to their evaluation process,”... »

Typar Geotextiles Continues 40 Years of Innovation

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27 March 2013 – TYPAR Geosynthetics, one of the world’s largest and leading suppliers of high-performance geotextiles, is proud to announce the latest addition to 40 years of innovation in TYPAR geotextiles: TYPAR C-Class Construction Fabrics. Engineered for use in AASHTO M-288 applications and to provide exceptional strength, uniformity, and durability characteristics, TYPAR C-Class p... »