Drilled shaft foundations are formed by excavating a hole, ordinarily 3 toes to twelve feet in diameter, inspecting the soil or rock into which the foundation is fashioned, and constructing a Solid-in-position reinforced concrete foundation inside the gap. The foundation as con structed supports axial forces via a mix of side-shearing and conclusio

In many cases, the soils at the location of the proposed structure can be expansive and collapsible. These soils could prolong to a great depth under the bottom surface area.  The subsequent is actually a summary of the most important elements that needs to be dealt with although designing the piling foundations:Structural Engineering From little