Helical Probe Test (HPT)

[WHEngineer]

I am searching for information on the HPT test. Some 3rd party engineers in my area of the SE use this test instead of DCP or SPT to determine soil bearing. I am looking for information on validity and experimental/empirical correlations on the equipment and sources.

 

[civilmg]

The following paper should help you out. I have not read this particular paper, but I just happen to run across it. I hope it helps.

Yokel, F.Y. and Mayne, P.W. (1988) Helical Probe Tests: Initial Test Calibration, ASTM Geotechnical Testing Journal, Vol. 11 (3), 179-186.