This document summarizes a study on the effects of different thicknesses and reinforcement percentages of shear walls in multi-story buildings located in various seismic zones in India. Building models with shear walls were developed using ETABS software. Reinforcement percentages required for shear walls of varying thickness (5, 10, 15, 20 inches) were compared for buildings of different heights (5, 10, 15 stories) across seismic zones II-V. The results show that reinforcement percentage increases with increasing seismicity and number of stories. Reinforcement percentage also increases with wall thickness up to a point, after which it decreases for thicker walls.