Drilled Pier Retaining Wall

Drilled pier walls are constructed by drilling a shaft into the ground and then filling that shaft with concrete. The concrete is reinforced with steel. This is an excellent way to stop a landslide when the soil above the rock is sliding downhill. In this video, the piers are 3.5 feet in diameter and go down about 35 feet deep!

Joseph Kowalski, P.E.
Current State PE Registrations