The 25mm thick large steel tube is pushed While using the finish shut by a metal shoe. On reaching the demanded driving resistance, a full duration cage is lowered in towards the tube and crammed with large slump concrete. The tube is then vibrated out leaving a shaft of concrete. https://brookszdfff.articlesblogger.com/55260694/the-best-side-of-cast-in-situ-piles-in-dhaka