Effect of Interaction of Nearby Footings on Settlement of Foundation Under Building

When the settlement of footing under building is calculated, it is common practice to estimate settlement of individual footing without considering the impact of neighboring footings. This common type of practice is unrealistic. This paper presents the impact of neighboring footing on elastic settlement of sand. In order to compare, settlement behavior of footings under building and isolated location, Finite Element Models have been generated by using PLAXIS 3D. The variation of settlement at different location especially at center, mid-edge and corner of building are presented. Settlement of individual footings under building is 1.5-5 times the settlement of individual footing at isolated location. Therefore, this issue should not be ignored during designing individual footings of a building. Settlements of individual footings under a building varywith the distance from center of the building. Maximum settlement was found at center of building. Footing Interaction Parameter (B/L), applied footing pressure and building size were found to be the most influential parameters.