In this method, a circular hole is excavated up into the depth at which the soil will stand unsupported (about 0.5m for soft clay and 2m for rigid clay). Vertical boards often called laggings, are then set in place throughout the excavated deal with and they are held tightly against https://emptycourtroom66655.dailyhitblog.com/36070697/5-essential-elements-for-pile-foundation-engineering-bangladesh