This document summarizes a research paper that analyzes the seismic performance of multi-story buildings with vertical irregularities using pushover analysis. The researchers used software to model buildings with mass irregularities and mass and stiffness irregularities. They found that buildings with more severe vertical irregularities experienced greater lateral displacement, especially in the upper stories. Models with semi-rigid roof diaphragms performed better than those with rigid diaphragms, experiencing lower displacements and base shear forces. The study concludes that vertical irregularities can negatively impact seismic performance and should be avoided when possible through proper structural design.
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Seismic Analysis of Multi-Storeyed Building Having Vertical Irregularities using Pushover Analysis