As viewed from your determine underneath, continual auger is used to drill the borehole, carry up drilled soil, and pour concrete although the auger is moved up. Therefore, the borehole will not have to have casing or hydrostatic tension to prevent harm to the borehole wall. আমাদের কোম্পানিতে দক্ষ সার্ভেয়াররা https://anthonya306her3.wikinstructions.com/user