Concrete Retaining Walls in Lee's Summit, MO

Hydrostatic pressure is the primary failure mechanism for retaining walls in Lee's Summit. The Wymore-Ladoga clay formation retains water rather than allowing it to percolate quickly, so when rain saturates the hillside behind a retaining wall, that water has nowhere to go except against the wall itself. A poured concrete wall without a gravel drainage layer and perforated drain tile at the footing will accumulate pressure over multiple seasons until something gives — typically a crack at mid-wall height or outward bowing at the base. Every retaining wall we build in Lee's Summit includes gravel backfill directly behind the wall, a perforated drain tile running to daylight or a catch basin, and weep holes through the wall face at regular intervals.

Sloped lots in neighborhoods like Summit Ridge and along Pryor Road where terrain grades naturally toward the road create consistent demand for retaining walls that serve both structural and aesthetic purposes. Homeowners in these areas often need walls to create level patio or lawn areas in otherwise unusable slope. We see both new construction wall installs and replacement work on older walls that were built without adequate drainage infrastructure and have developed cracks or movement.

Frost depth in Lee's Summit requires retaining wall footings to extend at least 26 inches below grade — we pour to 30 inches on exposed walls to give a margin above the minimum. The footing must bear on undisturbed native soil, not fill or disturbed clay. Rebar sizing and spacing in the wall stem are calculated based on wall height and the surcharge load behind it — a wall with a driveway above it carries significantly more lateral load than one retaining a garden bed.