The structural behavior of buildings is significantly influenced by their geometry and foundation configuration. This study presents a comparative analysis of regular and irregular multi-storey buildings with irregular (stripped) foundations using ETABS software. Irregularities in building geometry and foundation layout often lead to uneven load distribution, increased torsional effects, and differential settlement, which can compromise overall structural stability. In this research, both regular and irregular building models are designed and analyzed under static and dynamic loading conditions as per relevant IS codes. Parameters such as base shear, storey drift, displacement, and bending moments are evaluated to assess the structural performance of each model. The influence of stripped foundations—where continuous footing is partially interrupted—on load transfer and stability is also investigated. Simulation results reveal that irregular structures exhibit higher lateral displacements and stress concentrations compared to regular configurations, particularly under seismic loading. The findings emphasize the importance of foundation uniformity and geometric regularity in achieving safe and efficient structural designs. This study provides valuable insights for engineers in optimizing foundation layouts and improving seismic performance in irregular building systems.
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