In this process, a round gap is excavated up into the depth at which the soil will stand unsupported (about 0.5m for tender clay and 2m for rigid clay). Vertical boards often called laggings, are then set in position throughout the excavated encounter and they are held tightly towards the https://kamerontdlxq.anchor-blog.com/10908050/the-fact-about-pile-foundation-contractors-bd-that-no-one-is-suggesting