Rob Gardiner, Lankelma CPT. This note was first published in GE’s November 2005 issue.
Using conventional cone penetration Testing (CPT) technology, the use of standard cone friction (CF) and piezocones (CPTU) cones can be used to determine the insitu engineering properties of soil materials.
For some design applications the information obtained from standard CPTs and CPTUs must be supplemented, usually through conventional site investigation techniques and laboratory testing methods.
This note introduces the use of the cone pressuremeter as specialist instrument for use in providing supplementary data on the insitu properties of the soil. Three recent case studies are described, where CPT was used to enhance the foundation design for three proposed wind farm fields in Cambridgeshire.