As observed within the figure down below, ongoing auger is utilized to drill the borehole, lift up drilled soil, and pour concrete though the auger is moved up. As a result, the borehole isn't going to need to have casing or hydrostatic force to avoid harm to the borehole wall. https://waylonpepah.blogdomago.com/31602370/examine-this-report-on-cast-in-situ-piles-in-bangladesh