Drilled displacement piles (also known as augured cast-in-place displacement piles or augured, pressure-injected displacement piles) are installed by the displacement of soil and subsequent placement of cement grout within the evacuated volume. Depending on the soil grain-size characteristics, soil behavior, in situ soil density, pile spacing, and pile diameter, the installation process can result in measurable densification and an increase in lateral stress. Cone penetration testing was performed at a beachfront site in Myrtle Beach, South Carolina.