Bi-Directional Static Load Testing with Pressurized Load Cell

The GRL-Cell is a high capacity device installed within a deep foundation to statically load test the foundation. As the GRL-Cell is pressurized, it loads the foundation element in two directions. The portion of the foundation element above the cell location is pushed upward against its shaft resistance. At the same time, the foundation element below the cell location is pushed downward against its shaft resistance as well as against the toe bearing or “base resistance.” Shaft and toe movements as well as embedded strain gage instrumentation are monitored for each applied load. An estimated top load movement curve is constructed from the measured shaft resistance load-movement and base resistance load-movement responses.

GRL Engineers, Inc.