Review Paper on Comparative Study and Analysis of Vertical Mass Irregularities of RCC Building with Zone 3 and Zone 5

Abstract: The rapid pace of urbanization has led to the widespread construction of RCC building in seismically active zones. Many of these structures, however, where designed according to outdated codes that did not fully account for increased population density are the potential for strong earthquakes. The vulnerability of these building is often linked to mass irregularities, which disrupt the uniform distribution of weight across floor, resulting in poor structural performance during seismic events. This paper focus on studying the impact of mass equality at different floor level and different seismic zones in RCC building. Through seismic analysis using methods like the equivalent and response spectrum approach in Etabs, the paper highlights how mass distribution variations influence the structural response, offering insights into safer and more resilient design strategies.