![A timber pile of length 8 m and diameter 0.2 m is driven with a 20 kN drop hammer, falling freely from a height of 1.5 m. The total penetration of the pile in the last 5 blows is 40 mm](https://www.gkseries.com/blog/wp-content/uploads/2023/08/A-timber-pile-of-length-8-m-and-diameter-0.2-m-is-driven-with-a-20-kN-drop-hammer-falling-freely-from-a-height-of-1.5-m.-The-total-penetration-of-the-pile-in-the-last-5-blows-is-40-mm.jpg)
Q. A timber pile of length 8 m and diameter 0.2 m is driven with a 20 kN drop hammer, falling freely from a height of 1.5 m. The total penetration of the pile in the last 5 blows is 40 mm. Use the Engineering News Record expression. Assume a factor of safety of 6 and empirical factor (allowing reduction in the theoretical set, due to energy losses) of 2.5 cm. The safe load carrying capacity of the pile (in kN, round off to 2 decimal places) is
Solution:
![](https://www.gkseries.com/blog/wp-content/uploads/2023/08/Screenshot-478.png)