Cone Penetration Testing

Cone penetration testing (CPT) is an in-situ test whereby a cone penetrometer mounted to a series of steel rods is vertically pushed into the ground. Hydraulic rams on our CPT rigs push the cone penetrometer at a constant rate of 20 mm per second to depths of up to 100 m.

Lankelma offer popular piezocone testing, as well as a number of specialist cones that can be run concurrently to test different geological environments and evaluate a range of soil parameters. The CPT platform is also useful for obtaining samples and undertaking geotechnical installations.

Why choose Cone Penetration Testing?

CPT is ideal for testing a range of soils, with the cone penetrometer measuring the in-situ stress conditions and shear strength for use in geotechnical design. CPT results can be used directly for piled foundation design in sands and gravels.

  • Testing itself is quiet, producing no vibrations.
  • Minimal soil disturbance making it an ideal technique for sensitive sites.
  • Repeatable, high-quality and results are available in real-time. Instantaneous results allow for on-site selection of the best locations for testing, sampling and monitoring.
  • Our reporting team process data received electronically and issue preliminary results the next working day.

For more information on cone penetration testing please contact us or view Lankelma’s introduction to CPT video.

Find out more about our services by downloading our capability statements:

For onshore services click here.

For coastal and nearshore services click here.

Lankelma has also published a text book, In-situ soil testing, by JJ M Brouwer. This useful overview of CPT provides information on testing, sampling and instrumentation for land, nearshore and offshore projects. More than 25 cone penetrometers, instrumentation devices and samplers are described. Click here to view the online version.