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Wall System Combining Sheet Piling and Geogrid Reinforcements Now Available in US

Retaining Wall System Combining Sheet Piling and Geogrid Reinforcements Now Available from Northstar Vinyl Products, LLC and Tensar International

The new AquaTerraâ„¢ system combines sheet piling and geogrid reinforcements, offering considerable benefits to slope stabilization, marine and levee repair projects.

Atlanta, GA (PRWEB) December 2, 2007 – Northstar Vinyl Products, LLC ( and Tensar International recently unveiled the AquaTerra Retaining Wall System, a proprietary new concept that allows sheet piling and geogrid materials to be combined for the first time.

“AquaTerra is a solution for many complicated situations,” says Jeff Moreau, President of Northstar Vinyl Products, LLC. “AquaTerra is an excellent option when rock and hard soils present challenges, because in most cases, the sheet piles only need to be placed in a two foot deep trench. The system is also an excellent choice when piping and global stability issues are present because the sheet pile can be driven to a specified depth and then attached to the reinforcement system.”

Until now, there was not a connection for a ‘sheet pile-to-grid’ system.  
As communities continue to expand, land once considered unusable because of steep grades is now being improved with the use of retaining wall systems. AquaTerra is already having a dramatic effect on how retaining walls are designed and installed. Retaining walls once reserved for steel sheet piling are now being designed with light gauge vinyl or composite sheet piling supplied by Northstar.

Upland retaining walls are currently comprised of two components: a fascia system and a soil reinforcement system. Fascia systems are typically masonry block or pre-cast concrete panel systems. Soil reinforcements are either a geogrid or geotextile material. Using a variety of methods, fascia systems are connected to the soil reinforcement. The purpose of the geogrid is to diffuse the soil load that would otherwise act on the fascia by causing the soil to “stack vertically” as opposed to stacking at its angle of repose. Once the retaining wall is built, there is little soil load against the fascia.

“For years, engineers have known that if they had a method to connect geogrid or geotextile to a sheet pile, the same benefits would apply, and shorter, lighter gauge sheet pile could be used in most retaining wall applications,” Moreau says. “Until now, there was not a connection for a ‘sheet pile-to-grid’ system.”
AquaTerra also provides significant benefits to engineers designing tied back sheet pile walls. With AquaTerra, walls once reserved for steel, composite or heavy-gauge vinyl sheet piling can now be built with shorter sections of lightweight vinyl sheet piling. In addition, AquaTerra has no metal components, which is a huge plus in saltwater applications.

The versatility of the AquaTerra system lends itself particularly well to flood control and levee structures. The Modular Levee System is composed of two parallel sheet pile walls supported by layers of geogrid in the core. The geogrid mitigates the soil loading in the sheet piling and in many cases will allow the use of native soil in the core. The Modular Levee System by AquaTerra provides several key benefits:

    • The footprint of the levee is dramatically reduced, solving many environmental and easement concerns.
    • Lighter and shorter sheet pile sections reduce the cost of getting sheet pile material to remote sites;
    • Lighter and shorter sheet pile sections don’t require the use of heavy machinery on an existing levee;
    • Lighter and shorter sheet pile sections are less expensive that optional materials;
      The geogrid, in many cases, will allow the use of native fill in the core, saving the expense of trucking in non-native fill;
    • Whatever the choice of fill, less of it is required; and,
    • The AquaTerra Modular Levee System can be installed in less time than conventional designs.

BlogMaster: System looks useful: but is it available outside the US?

5 Responses to Wall System Combining Sheet Piling and Geogrid Reinforcements Now Available in US

  1. David Coley 7th January 2008 at 4:36 pm #

    Yes, Vinyl, HDPE and Polyurethane belnd composite sheet piling is available in the UK from APE plastic Piling. APE represents world leaders including Skyline Sheeting Solutions, Truline, Profextru and Pietrucha. Our website contains substantial information on products, applications and installation.

    For more info see the site at the UK’s widest range of plastic and compositen sheet piling.

  2. David Coley 7th January 2008 at 4:40 pm #

    Skyline Sheeting Solutions

    Composite Sheet Piling

    are now available from APE.

    Supported by Bob Lee – The Pioneer of Composite Sheet Piling!

    APE Plastic Piling now have the UK’s most comprehesive range of synthetic sheet piling, with a range that now includes:

    Polyester Composite
    Polyurethane Blend Composite
    Unique to APE is the fact that many of our products utilise Adoptive Technology, that is they work in synergy with other established products:

    The Europile and hydrophillic sealants
    The ProLock MultiLock and Timber piles
    The ProLock and Steel tubes
    The Truline Series 800 and gravel and Concrete
    Only APE Plastic Piling can offer you this extensive range!

  3. David Coley 7th January 2008 at 4:41 pm #

    APE are extremely pleased to add to our range, two new and very innovative plastic piling products, the Truline Series 800 and Series 1200. These products not only complement our existing product range, but also share our ideology of adoptive technology.
    Rather than market products as a replacement for this and that, our extensive range works alongside existing technology and methods. In the case of truline the product is infilled with either gravel or concrete, and so benefits from increased load bearing whilst the concrete is protected by the plastic from the elements.

    Truline proves that although all plastic sheet piling may have similar material properties, they are not neccessarily the same. Truline has been created and developed to:

    be an innovative design alternative, not another “me-too” low cost option;
    be an inherently stronger design alternative than corrugated plastic piling;
    make it easier and faster to form a concrete cap;
    provide property owner with a more refined appearance to enhance the environment not detract with artifically repeated corrugations;
    provide a strong retaining wall solution that is completely flat frontaged providing an internal french drain for better drainage;
    provide better erosion and scour protection, its double skin providing a back up layer in cases of impact damage;
    help reduce noise and scouring that occurs with old fashioned corrugated plastic piles;
    provide engineers and contractor with a design and fill option that can be tailored to the job.
    Truline’s dual-interlocking design reinforces the integrity of the joints between the parts from top to bottom. Not only increasing the water tighteness over old fashioned single interlocks, but acts against unzipping and maintains straight line installation.

    Truline publishes engineering specification in accordance with full scale performance data by an accredited independent testing laboratory rather than rely on theorectical specifications.

    Truline Series 800 and 1200 represent the heavier duty sections of APE plastic piling range with bending moments as high as 49 kNm/m and Section Modulus as high as 2258 cm3/m!

    The Truline Products are based around a unique U channel design, and auxillary components such as end plates, and angles. These piles and components are then filled with gravel and concrete, a modern development based upon adopting the benefits of gabions and internally more substantial concrete capping.

    The Truline system of multi-use components allows for:

    The versatility to create piled walls for various land configurations while maintaining joint integrity.
    The ability to configure wall returns to protect the new wall from failure of adjacent walls.
    Unique methods for joing Truline to an existing concrete wall.
    The Unique U-Channel design results in:

    A smooth, flat external wall surface improving aesthetics through complete elimination of traditional corrugations.
    The capability of the wall sections to be filled with gravel improving the strength and enhancing the drainage characteristics,
    Less complicated formwork requirements, reducing installation time whilst create a more substantial integral capping system.
    Stiffer sections of a uniform configuration maximising installation speeds, as sheet fleining is virtually eliminated.
    Double interlocking.

  4. David Coley 7th January 2008 at 4:43 pm #

    ProLock® and MultiLock®

    Plastic Sheet Piling

    APE are extremely please to add to our range of plastic piling, the ProLock® and MultiLock® sheet piling system. These products marry well with the Europile, and APE’s overall approach to new products – these are market-focused developments, not ‘me-too’ products.
    These products are produced in Holland for APE by Profextru bv, who has specialised in the production of plastic profiles for the water construction industry and agricultural sector.

    Profextru has developed out of Wavin, Europe’s largest producer of plastic products, having almost half a century of experience in the development and manufacturing of synthetic material profiling.

    The ProLock® plastic sheet piling is developed from a market demand perspective. It meets the needs of organisations responsible for water management for sheet piling systems which are durable and economical, and at the same time protect the environment. Riverbank protection made from tropical hardwoods and preserved woods do not fulfil current requirements. Steel and concrete are heavy and expensive.

    Plastic is very sustainable, but it has a lower E-modulus than wood and steel. Softwood offers much strength and is cheap, but it rots away when it is applied at water surface. However, immersed softwood has a very long life span.

    Therefore Profextru developed a sheet piling system which combines the characteristics of plastic with the benefits of softwood. The plastic screen is applied at the height where water is present up to ground level (and depending on the type of earth up to approx. 50 cm in the bottom), while the wooden pole is installed under the lowest water level, where it has to provide strength and the wood cannot rot.

  5. Tom Smith 3rd September 2008 at 12:11 am #

    Wow! What a great engineering feat! Sounds like a lot less money ( 50 % ) less then steel or even the cheap vinyl systems. Non-corrosive too! I would think in todays world the freight savings would be like one truckload or container vs eight of steel sheeting. That’s got to be a big savings also!

    I don’t see how the other responses address the unique engineering ?

    great job Jeff!

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