This document discusses the structural analysis and design of a multi-storey commercial and residential building using STAAD Pro software. It first describes analyzing the building by calculating loads like dead load, live load, and load combinations. It then details designing building components like slabs, beams, columns, and footings based on the load calculations. The analysis found the building to be safe against all loadings and deflections. The conclusion is that STAAD Pro provides accurate results and a safe structural design for the multi-storey building.