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The high rise structures are setting a trend day in and day out. Today in this era, people are fighting for building up the “tallest” high rise structure and in this fight the role of the structural design engineers comes. The scope of the paper is to understand and analyse the behaviour of high rise structures subjected to “vertical geometric irregularity”. Out of the methods prescribed by IS 1893 (Part1):2002, ESA and RSA for G+4 in all four zones with regular and irregular configurations have been taken up. To take different models in four zones was to reduce the level of inaccuracy in results. The irregularity has been adopted at all the four floors. Only linear analysis has been performed as per IS 1893. A through study has been presented and results of comparison with regular structures have been presented. For the analysis SAP2000 v14.2.4 had been used. The scope of the paper also includes the evaluation of response of structures subjected to different seismic zones having low to very severe seismic intensity.

Parametric Study of G+4 Storey Structure with Vertical Geometric Irregularity Subjected to Seismic Actions