Columbus sits on complex glacial deposits that make every excavation a puzzle. We see it all the time. Contractors hit unexpected lenses of sand and gravel just below the till. Water flows in. The cut starts to ravel. A properly sequenced geotechnical design prevents this chaos. It starts with characterizing the stratigraphy. Then we model the soil-structure interaction for the shoring system. For tight urban sites near High Street or the Scioto River, we integrate dewatering into the retaining wall design early. The goal is a constructible sequence that keeps neighboring foundations stable. No surprises.
The biggest risk in Columbus deep excavations is not the till. It is the perched groundwater nobody anticipated in the sand lenses.
