Abstract
This study aims to investigate the seismic behaviour of structures with vertical irregularities. The project employs Response Spectrum Analysis (RSA) to assess a vertically irregular reinforced concrete (RC) building. The investigation encompasses the modelling of both a regular and an H-shaped plan irregular building, excluding the ground floor, resulting in a G+7 storey structure. The seismic response of the framed building under consideration during simulated earthquake motions is influenced by the distribution of stiffness, strength, and mass in both horizontal and vertical planes. The primary objective of this research is to conduct a study of the structure's stiffness by examining Regular Structure and Plan Irregular Structure, each with different vertical irregularities. The entire set of building frames is modeled and analysed using Staad.Pro V8i software, and various seismic responses such as base shear, frequency, and node displacement are obtained.
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