Goble Pile Check (GPC) was pioneered by the late professor George G. Goble, Ph.D. - the father of Dynamic Load Testing (DLT). Dr. Goble is the founder of both PDI and GRL.

GPC is the wireless pile driving analysis (PDA) system of the 21st century - performed in accordance with ASTM D4945.

GPC system is supported by the three most powerful programs in the world, far superior to any existing programs by competitors. The three programs are:

• GPC for data acquisition.

• GPC Review for result reporting, which includes instant automatic signal matching (iN_GAPA) results in real-time.

• N_GAPA (Nguyen Goble Automatic Pile Analysis) for signal matching analysis

Sensor (i.e., Gauges) can be mounted up-side-down (i.e., inverted) or right-side-up.