The Bi-Directional Load Test cell is a hydraulically driven, individually calibrated, sacrificial loading device installed within the foundation unit. Working in two directions, upward against side-shear resistance and downward against end-bearing resistance, the Cell automatically separates the resistance and displacement data for each component of the pile. By virtue of its installation within the foundation member, the Cell load test is not restricted by the limits of overhead structural beams and tie-down piles. Instead, the Cell derives all reaction from the soil and/or rock system with each respective pile component of resistance providing reaction for loading the other.