<p>This research examines the seismic performance of imperfections in multi-story steel-framed buildings. The structural behavior of 4, 6, and 8-story edifices was analyzed under seismic stress utilizing ETABS software and data from the Halabjah, Northridge, and Kobe earthquakes. Stories, roof displacement, and strain responses were among the variables studied by nonlinear dynamic and pushover analyses. Steel bracing configurations (central core, external corner, and exterior side) significantly enhanced earthquake resistance by augmenting lateral stiffness, reducing displacement, and controlling drift. The optimal design identified was center-core bracing, which decreased displacement by 52.32% and drift by up to 59.99%. The reduced manufacture of plastic hinges was an additional advantage of bracing, enhancing energy dissipation and structural resilience. The study emphasizes the impact of building height, earthquake intensity, and irregularity on seismic performance. The benefits were more apparent in shorter edifices; nevertheless, optimum bracing methods were essential for taller structures due to heightened flexibility and lateral force requirements. These findings underscore the significance of steel bracing in seismic design and retrofitting approaches, emphasizing its need in reinforced concrete structures in earthquake-prone regions.</p>