Dynamic probing involves driving a cone or rod into the ground using a hammer. The number of blows required to drive the cone or rod a certain distance is measured. This information can be used to estimate the soil’s strength and stiffness.

Dynamic probing is often used to supplement information obtained from other site investigation methods, such as boreholes and CPTs. It can be used to quickly and economically map the subsurface and identify areas of weak or soft soils.

Dynamic probing is a valuable tool for geotechnical and structural engineers. It can help to ensure the safety and stability of foundations, embankments, and other infrastructure.