Situation where the pile foundations and bored piles are used

Pile foundation is a deep foundation , which transfers the weight of the structure on the soil to the deep hard layer of the soil . Piles are used in the place , where the open excavation is not possible , for the foundation work . It is used where the top layers of the soil are weak and the load bearing capacity of the soil is not sufficient to take the load of the proposed structure . Pile foundations are also used for the tall structures . The pile foundation has two parts , the cap and the number of piles ,that can be one or more than one .

The load of the structure is taken by the cap of the pile foundation. The cap, in turn transfers the load to the piles and piles take the load to the soil .

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The piles are used in the following situations -

• the top layer of the soil is not capable of taking the entire load of the proposed structure .
• The load of the structure is heavy and its distribution has to be even not uneven .
• The water table level is high and it is not possible to take the water out by use of pumps .
• There is the large fluctuation of the subsoil water is there at the proposed site of construction .
• The proposed structure is coming up near the water body or river bed ,where the possibility of sourcing action of water .

When the structure is massive , and it is know for sure that the soil may not be able to withstand the weight , then the pile foundations have to be considered . Massive structures are built on the piles are ensuring safety and reliability of such structures . In the normal ground conditions , the pile is used to resist the horizontal load . The piles foundations are the convenient way to ensure the work over water , bridges piers or jetties .

The main job of the Pile Foundation is to take the load of the structure to the solid soil level and resist the upward , lateral , vertical uplift load . The need for pile foundation is considered after getting the soil testing reports . The soil testing reports reveal the chemical and physical composition of the soil and its ability to handle the load of the structures . The pile foundations and Bored Piles are considered to bypass the weak layers of the soil and take the load of the structure to the solid layer of the soil . Also if the cost estimates show that the cost of the pile foundation is low , as compared to other ground improvements.