What is a Cone Penetration Test?
Also known as In-situ testing, Cone Penetrometer testing or Piezocone testing.
A CPT is used to determain the types of soils and estimate the geotechnical parameters of the soils in place. It is used as a testing method to provide a continous profile of soil stratification
Testing equipment and method
CPT Services uses a Hogentogler electric 10 ton cone (with seismic capabilities) and the pore pressure element located behind the tip and in front of the friction sleeve
The cone has 3 sensors which measure the tip resistance, sleeve friction and pore preasure , The tip resistance, sleeve friction, pore preasure, inclination and temperature are recorded at 2cm intervals on the CPT computer allowing the operator to see exactly what is being recorded as the test is conducted.
The testing rig is a Power Probe 9500-VTR which uses a 8500-foot lb. drive head to install screw anchors that act as reaction piles when pushing the cone.