Cone Penetration Test (CPT) machine

The CPT test is performed using a cylindrical penetrometer with a conical tip (cone) penetrating the ground at a constant rate. During the penetration, the forces on the cone and the friction sleeve are measured. The measurements are carried out with analog read-out or using electronic transfer and data logging, with a measurement frequency that can secure detailed information about the soil conditions.

The results from a cone penetration test can in principle be used to evaluate:

• stratification

•soil type

•soil density and in-situ stress conditions
•shear strength parameters.