Dynamic Probing

The Dynamic Probing test is used to determine the resistance of soils in situ to the intermittent penetration of a cone, driven dynamically in a standard manner.

The equipment consists of a 90° cone which may be sacrificial or retained for recovery, a series of extension or driving rods, a torque wrench and a driving device.

There are two type of test: Heavy Dynamic Probing (DPH) and Super Heavy Dynamic Probing (DPSH). The dimensions of the cone and the mass and drop height of the driving weight differ between the two tests.