The nees@cornell soil storage system is capable of holding and handling large quantities of soil for full-scale and near full-scale soil-structure interaction experiments. The three soil bins are located inside the high bay, aiding in moisture control and prevents freezing. The bins each measure 13 ft wide, 14.5 ft high, and 4 ft in depth with a capacity of 22 yd3. A moveable, multi-stage conveyer system allows for the rapid movement in and out of the bins aiding placement of soil for large-scale experiments.
A high and low reconfigurable reaction wall is intended for testing of large-scale structural elements. There are three major sections of the wall. Each end has an L-shaped wall. The south end is 20 ft. high and the north end is 8 ft. These sections are intended to serve as a reaction walls for testing above grade structures. The straight low wall center section is 42 ft. long and serves both as a reaction/anchorage location for testing above grade structures and as a reaction base for testing of pipelines. The wall is constructed from modular precast concrete units joined via unbonded post-tensioning, and is reconfigurable.
Four large-stroke actuators are used to provide large displacements under heavy loads. Two actuators (matched) have a maximum load capacity of 100 kip (445 kN) in tension and 146 kip (649 kN) in compression with strokes of +/- 25 inches (0.64m). Single direction displacement is 50 inches (1.28m). The other two actuators (matched) have a maximum load capacity of 66 kip (291 kN) tension and 112 kip (496 kN) in compression with strokes of +/- 36 inches (0.91m). Single direction displacement is 72 inches (1.82m).
The DAQ System is a high resolution, expandable, configurable, multi-channel measurement system. The system is built around a core of National Instruments' PXI/SCXI data acquisition and signal conditioning modules and LabVIEW based software. Data can be captured, stored locally, displayed and streamed to remote viewers in near real time. Typical sensors used are strain gages, soil pressure sensors, temperature, displacement, force, tactile pressure, etc. Systems of up to 224 channels can be configured.