A Review on Performance of Annular Raft Foundation

This study dedicates a literature review on the performance of annular raft foundations which depend on various parameters such as type of loading and soil, size of footing, bearing capacity factors. Annular raft foundation is used in structures such as silos, water tanks, chimneys, etc. which are often axisymmetric structures. A number of researchers studied the bearing capacity and settlement of annular raft. Both parameters significantly affect the stability and design of the annular raft foundation. It is found that the ratio of the radius of the annular raft is a key factor which governs the design criteria of annular raft.