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  • Large Tiered Walls, Christ Hospital, Cincinnati

    Large Tiered Walls, Christ Hospital, Cincinnati

    This 60-foot grade change was achieved using tiered walls and slopes. Maximum geogrid length was 50 feet long. Deep undercuts to shale and limestone bedrock were required to achieve global stability.

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  • Geogrid Interaction Flexibility

    This is an interesting concept presented by Huesker. Well done video explains how flexible geogrids can improve soil-geogrid interaction.  READ ORIGINAL ARTICLE HERE

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  • Retaining Walls Supported in Sliding Soils – How to Prevent a Failure

    Retaining Walls Supported in Sliding Soils – How to Prevent a Failure

    Global Stability includes the stability of the soils BELOW the retaining wall. If the foundation soils are sliding on a sloping surface of bedrock, then the retaining wall could begin to slide downhill! This 2-minute video shows two ways to prevent this type of global stability failure. Joseph Kowalski, P.E. www.RetainingWallExpert.com Current State PE Registrations

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  • Strata Systems Geogrid Video

    Strata Systems Geogrid Video

    Some excellent animations in this video on the layering that occurs during construction of a reinforced soil wall! Author: Strata Systems, Inc. www.geogrid.com  

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  • Retaining Wall Network

    We specialize in the design of retaining walls, especially the kind of walls that are reinforced with high-strength geogrids, steel strips or steel mesh. We also make articles and videos about our retaining wall projects. Our videos have been viewed nearly 600,000 times, and Google analytics shows visitors from all over the world, but a majority of these visitors are from North America. Because we work on projects across the US, and in Canada and Mexico, it was necessary for […]

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  • Professional Engineer (PE) Licenses for Joe Kowalski

    States of P.E. Registration

    [simplemap] Kowalski Engineering, Inc. is a registered Engineering Corporation only in the State of Ohio. Joseph W. Kowalski, P.E. is a Registered Professional Engineer in: OH, KY, IN, SC, WI, MI, MD, GA, AL, NC, TX, CT, ID, OR, PA, CO, TN, HI, OK, VA, WA, NY *This list is current as of  September 3, 2014.  Contact us to confirm registration in these or additional states.

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  • Retaining Walls – Construction Review Services

    Retaining Walls – Construction Review Services

    Everyone involved with a retaining wall project benefits when the wall is constructed properly. To make every effort that a retaining wall is constructed according to the design drawings, the Owner should hire the Design Engineer to visit the site. During Construction Review, the Engineer should compare the actual field conditions and materials to the design drawings. This video is a little longer than most (it’s about 7 minutes) but I promise it is full of good information! Joseph Kowalski, […]

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  • Retaining Walls – Layout and Surveying

    One of the most important things you can do when building a retaining wall is to ensure that the wall is in the correct location, and at the correct elevation.  You never want to have to “move” a wall because it is a few feet from where it should be, right?  Also, you want to place the blocks to ensure that you have sufficient room to install the geogrid layers.  This video shows some easy ways to help you with […]

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