This document analyzes and designs a 7-story building using ETABS software. It models the building with and without a base isolation system. Time history analyses are conducted using earthquake records to compare the seismic responses. Base isolation is found to reduce base shear, story acceleration, drift, and column/beam forces compared to a fixed base structure. The document outlines the building specifications, modeling methodology, analysis results for shear/moments, reinforcement design, and time history analysis outputs like displacement and acceleration. It concludes that base isolation improves seismic performance by decreasing seismic demands.