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07 Sep 2009

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The Masterbuilder Magazine

This paper describes the salient features of a project wherein geogrid reinforced soil walls with a welded wire mesh supported wrapped face were used as closure and return walls for the approaches to a flyover. The walls had a height of 15.0 m for one approach and 10.0 m for the other. Indigenously manufactured knitted and PVC coated polyester geogrids were used as the soil reinforcement. A welded wire mesh supported geogrid wrapped face with random rubble backing with an inward batter of 5º was used. A relatively fine-grained Yamuna sand was the fill material. Some of the challenging aspects considered in the design like large heights, acute angle corners, and weak foundation soils are discussed.

 
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