The foundation slab of the four-cell box girder provides a basement area for locating the blow-down and other accumulators for the shake tables and servo-hydraulic actuators, access to the underside of the tie-down floor for the anchoring of test fixtures, and general storage.
It is also used to run electric power and hydraulic lines to, and from, experimental equipment on the floor above. Headroom is about 8 ft (2.4 m).
The basement also houses an experimental preparation area.
Hydraulic hardlines feed the Laboratory from an external pump house just outside the south-east corner of the building. Also, seven ports along the centerline of the Laboratory floor provide access to feed, return and drain lines to reduce the need for long runs of hydraulic hose.
The NEES@University of Nevada, Reno equipment site is funded in part by the Geoge E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Program of the National Earthquake Hazards Reduction Program (NEHRP) of the National Science Foundation (NSF) under Award Number CMMI-0927178.