Shape accelerometer arrays provide an alternative to inclinometer probes for determining horizontal displacement versus depth profiles during lateral pile load tests. These arrays typically consist of triaxial chip-based accelerometers located at 0.3 m intervals
within flexible waterproof tubing. These shape arrays can provide a continuous readout of displacement, velocity, acceleration, and
rotation at each accelerometer location. Because the shape arrays are relatively new and have not been used for this application, their
performance was evaluated relative to conventional inclinometer probes during a full-scale lateral pile load test. The results from
these tests indicate that the shape arrays can provide accuracy comparable to that from an inclinometer, for static loadings although
some problems were noted in coupling the array to the pipe which could hinder dynamic measurements.
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