MSE WALLS & SLOPES PROJECT PROFILE

Southeast Anthony Henday Drive

Wall system meets unique Challenge challenges for Edmonton’s ring The challenges of this project was the shear road. number of structures to be constructed coupled with time constraints and, in some cases, weak LOCATION: foundation soils (vertical wick drains were Edmonton, Alberta required under some structures to hasten PRODUCT: foundation soil consolidation). SierraScape® MSE System PROJECT PARTNERS: Solution Owner To meet these challenges, the designers required Alberta Transportation a retaining wall system that was adaptable to the Consultant various bridge/overpass configurations being Marshall Macklin Monaghan Ltd. constructed and that was able to accommodate Completion Date the anticipated uniform and differential October 2007 settlements. Tensar’s SierraScape® Mechanically Stabilized Earth (MSE) retaining wall system, provided by Nilex, was selected to meet these challenges. In January of 2005, Alberta Transportation SierraScape is well known for its flexibility awarded the province’s first significant Public/ in design, performance, and diverse project Private Partnership (P3) project for construction conditions. of the southeast portion of the Anthony Henday Drive ring road around the City of Edmonton. The project involved construction of approximately 11 km of divided highway, 10 interchanges and 24 bridge structures. Southeast Anthony Henday Drive

Results During construction the SierraScape system proved its adaptability in handling configuration changes and site conditions from structure to structure. Post-construction, SierraScape’s flexibility handled the expected settlement changes. On completion, full height concrete panels were attached to the SierraScape system to provide an architectural finish.

The Nilex Advantage

Installation Nilex is committed to unearthing better results. Whether it’s for a civil, resource or Construction of the first SierraScape wall began environmental project, we offer the latest in July of 2005. Wire-formed facing units were engineered and technically superior materials cut to match elevation changes and bent to and techniques to save our customers time accommodate tight corners and angles. This and money, and minimize the need to move or proved particularly useful as the SierraScape remove earth, and reduce the need for granular wall face was notched-in to wrap around three materials. sides of the concrete bridge caissons without applying lateral load to them. With over 35 years experience, a long-standing commitment to the environment and highly SierraScape’s unique wire-formed facing units qualified staff, Nilex delivers the products and connect directly to primary reinforcing HDPE technologies that give clients an economic geogrid using a positive mechanical connection. advantage with environmental benefit. This connection assures long term structural integrity for differential settlement, seismic activity, and/or heavy external loads. A nonwoven geotextile was used inside the wire-formed facing units to contain and separate backfill materials (25 mm washed rock at the front face and inexpensive screened sand for reinforced backfill).

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Rev. 02/2012