Relationships between shaft capacity of driven piles and CPT end resistance

Potential relationships between the shaft capacity of a pile driven in clay and the cone penetration test (CPT) end resistance are investigated using results from recent field research on displacement plies, It is shown that a relatively good correlation between shaft capacity and cone end resistanc e may be achieved if other influential parameters such as interface frictio n angle, clay sensitivity and relative depth of the pile tip are taken into account, The proposed approach is seen to provide good predictions for a r ange of pile test results and is both compatible with, and an improvement o n, existing CPT-based methods.