Building irregularities are an important concern when they are subjected to strong earthquakes. In structures, an
abrupt change in the vertical or plan configuration tends to weaken the stability. It is necessary to study how irregular structures
respond to lateral loads in order to prevent failure and reduce the risk of hazards. In this case study, a G+3 storey building is
modeled using the existing beam and column cross sections. In addition, models with reduced cross sectional areas of 5%, 10%,
and 15% were developed and static linear analysis was performed using Etabs software in accordance with IS1893 (Part1):2016. The parameters considered in this study are storey displacement, storey drift, and base shear. The analytical results
obtained are compared with those of the existing building model.
