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Footings are structural members that support columns and walls and transmit their loads to the soil in a way that does not exceed the soil's load bearing capacity or cause excessive settlement or rotation. There are two main types of isolated column footings: pad footings and sloped footings. The design process for isolated footings includes determining the size, net upward pressure, bending moment, depth, reinforcement, and load transfer requirements. The example provides specifications to design an isolated square footing to support a 400mm x 400mm column with an axial load of 800kn using M-20 concrete and Fe-250 steel, accounting for a soil bearing capacity of 120kn/m2.
