Evaluation of Best Multistoried Building Case of Vertical Mass Irregularity Under Seismic Loading

The phenomenon of out-of-plane offset in multistoried buildings has emerged as a topic of considerable interest in the field of structural engineering. Out-of-plane offset pertains to the vertical displacement or misalignment of structural components, such as walls or columns, relative to the primary vertical load-bearing elements of a building. This research paper aims to explore the most effective strategies for managing out-of-plane offset in multistoried buildings. To achieve this objective, a comprehensive analysis was conducted on a series of six model cases from case OPO case 1 to OPO Case 6, with an additional case of OPO 1.1, resulting in a total of seven cases being examined. The comparative analysis revealed that possibility case 6 exhibited the most favorable outcomes among all scenarios, indicating its potential as the recommended approach, highlighting the benefits of implementing out-of-plane offset selectively at the upper floor levels, to enhance the structural integrity and performance of multistoried buildings.