END BEARING PILE
End bearing piles, which is also known as point-bearing piles, are used to transfer superstructure load through low bearing capacity soil to a strong stratum such as rock or very dense sand and gravel. They infer most of their load-carrying capacity from the resistance of the strong soil layer at the end of the pile.
The end of the pile needs to be penetrated into the firm strata by at least three times the diameter of the pile. This measure is considered to achieve the full benefit of the ultimate strength of the firm layer under the pile tip. Prefabricated piles and auger type pile can be used as end-bearing piles.
The end bearing piles pass through weak soil and rest on strong soil layer, hence behaving like a column. That is why this type of pile is designed similar to a reinforced concrete column. Buckling failure is not considered in the design of end bearing pile unless parts of it go through water or air.
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