The 25mm thick significant steel tube is pushed with the stop closed by a steel shoe. On reaching the essential driving resistance, a complete size cage is decreased in on the tube and filled with significant slump concrete. The tube is then vibrated out leaving a shaft of concrete. The https://cast-in-situ-piles-in-ban57360.bloggazza.com/31699506/not-known-facts-about-cast-in-situ-piles-in-dhaka