In 1968, civil engineering faculty at the University of California, Berkeley (UC) proposed to construct a 100-foot by 100-foot welded steel shaking table, weighing 2.2 million pounds. It was to be hydraulically powered by 60 to 72 actuators, allowing operation in three translational degrees of freedom, with an acceleration capacity of 2/3 g. The proposed shaking table was designed to allow researchers to experimentally test and identify the earthquake behavior of large-scale structures weighing up to 4 million pounds. …