Abstract: The main objective of this study is to find out the structural performance of a (G+10) building between conventional, shear wall, and flag walls in North East India (Meghalaya). As per IS 1893:2016, the building is located in Zone V. The ETABS software is used for seismic analysis, focusing on the response spectrum. The models are compared based on natural period, base shear, storey drift, stiffness, and lateral displacement in the X and Y directions. This study compared a 10-storey building with different wall types and found that flag walls improve performance by reducing vibration time by 50%, base shear by 2%, storey drift (14% along the X-direction and 41% along the Y-direction), storey displacement (44% along the X-direction and 54% along the Y-direction), and stiffness (98% along the X-axis and 99% along the Y-axis). Using a central shear wall and flag walls on the 3rd, 7th, and top floors (model M19 SW+FW) saves space and performs better than conventional systems, making the structure stronger and more stable during earthquakes. Model M19 SW+FW gives a good result compared to 22 models.

Keywords: Base Reaction, Shear wall, Flag wall, Response Spectrum Analysis, Storey Displacement, Storey Drift, Storey Stiffness.

| DOI: 10.17148/IARJSET.2024.11659