Abstract
The distribution of stiffness, strength, and mass in both vertical and horizontal orientations affects how well a high rise structure performs during powerful earthquake events. A building is considered irregular if there is a difference in stiffness, strength, and mass between the adjoining storeys. The performance and behavior of regular and vertical irregular G+10 reinforced concrete (RC) buildings under seismic loading are the main topics of the current study. In this study, stiffness and setback, two types of vertical abnormalities, are taken into consideration. Response spectrum analysis (RSA) is used to conduct seismic analysis on a total of eight normal and irregular structures. It is possible to get several earthquake reactions, including storey displacement, storey drift, overturning moment, storey shear force, and storey stiffness. These replies have been used to compare the differences between regular and irregular structures. The outcome suggests that a stiff building construction with uneven setbacks causes instability under earthquake stress. In RC construction, a proportional quantity of stiffness is advantageous to regulate the instability. Keyword: Setback, Vertical irregularity, Storey displacement, Storey drifts, Response spectrum analysis.
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