Geocentrifuges accurately scale models of structures embedded in soil by scaling time and acceleration in proportion to the geometric scale factor. Such tests accurately demonstrate geodynamic phenomena such as soil-structure interaction, embankment failure, and nonlinear soil behavior. These centrifuges can be equipped with video imagining and failure line detection, pneumatic actuators, and seismic shake tables. The ANCO software program, CENTRIVIEW, provides for PC-based control and data acquisition.