What is the importance of Pile Foundation ?
Pile foundations are the part of a structure used to carry and transfer the load of the structure to the bearing ground located at more depth below ground .When the surface soils are very soft and/or can liquefy, piles can be used to advantage. However, they should be properly designed, keeping in mind the following considerations: first, as discussed above, the pile caps should be tied together with tie beams or a reinforced concrete slab that can work in tension and compression so that the foundation can act as a unit (assuring the integrity of the foundation); second, bearing, rather than friction piles, should be used if the foundation materials might liquefy; third, the piles should be able to carry not only axial but also shear and bending forces (which can be developed due to relative horizontal displacements between different layers in the soil deposit).
