A $300\text{mm}$ dia concrete pile, $10\text{m}$ long, was driven by…

Question

A $300\text{mm}$ dia concrete pile, $10\text{m}$ long, was driven by double acting hammer (rated energy $16.62\text{kj}$, total mass $2200\text{ kg}$) The driven was done with a short dolly and cushion $2.50\text{m}$. The average penetration recorded in the last five blows was $3\text{mm/blow}$. calculate the safe pile load by Hiley formula.