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  • How Does Geogrid Work?

    How Does Geogrid Work?

    Geogrid reinforcement can transform a pile of loose gravel into a dense cube of material that can hold up a car! This video shows you the basics of how geogrid reinforcement works in MSE walls, and other segmental block retaining walls.  The photos are provided courtesy of Strata Systems, Inc. (www.geogrid.com). Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations

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  • Retaining Walls with Vegetated Face

    Retaining Walls with Vegetated Face

    This is a 30-foot high, 1200-foot long, 45-degree slope that has a vegetated face, constructed in 1999.  It is now heavily vegetated.  The slope was constructed as part of the Rookwood Commons shopping center in Norwood, Ohio. Lean clay fill was used as the infill material, which was possible because the slope was battered back at 45 degrees.  A soil laboratory testing program was performed to pre-qualify the soil used.  Field monitoring included piezometers, inclinometers, settlement plates and nuclear density […]

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  • Retaining Wall Failure Caused by Water

    Retaining Wall Failure Caused by Water

    In this video we show a retaining wall that failed because the downspouts for the buildings were discharging water into the ground right behind the retaining wall! Sometimes the recipe for retaining wall failure is “Just Add Water”. Be sure your retaining wall is designed to divert, collect and remove water. Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations

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