All engineered construction resting on the earth must be carried by some kind of interfacing element called a foundation. The foundation is the part of an engineered system that transmits to, and into, the underlying soil or rock the loads supported by the foundation and its self-weight. The resulting soil stresses except at the ground surface are in addition to those presently existing in the earth mass from its self-weight. Piles are used to support the structures. Piles are frequently required because of the relative inability of shallow foundation to transmit inclined, horizontal, or uplift force and over-turning moments. Such situations are common in the design of earth retaining structures and tall structures subjected to high wind and earthquake forces. Considering the importance and necessity of pile in construction work. This thesis is based on the piles and the topic name “Model studies of four bent pile with respect to different density i.e. loose, medium and dense of cohesion less soil”. The main objective of the thesis is to determine the reduction in load carrying capacity due to bending of four bent pile and also to determine the load carrying capacity of the bent pile with respect to different density i.e. loose, medium and dense of cohesion less soil. In the present study, the carrying capacity of the pile shall be ascertained under different conditions of soil and bending. The effect of the degree of bending shall be studied by a different angle of bend. The study shall be made only in cohesion less soil under different degree of compaction. The study is made on one type of pile material-timber