The design and analysis of steel structures require accuracy, efficiency, and strict compliance with design codes to ensure safety and economy. Modern structural engineering practice increasingly relies on advanced software tools to handle complex geometries, load combinations, and detailing requirements. This study presents a comprehensive approach to the structural analysis and design of steel structures using STAAD for analysis and Tekla Structures for detailed modeling and fabrication-level detailing. Structural analysis is performed in STAAD to evaluate member forces, displacements, and stability under various loading conditions, including dead, live, wind, and seismic loads as per relevant design standards. The designed member sections are then transferred to Tekla Structures to generate precise three-dimensional models, connection details, shop drawings, and material take-offs. The integration of analysis and detailing platforms enhances design accuracy, minimizes errors, and improves constructability. The study demonstrates how coordinated use of STAAD and Tekla leads to optimized structural performance, reduced design conflicts, and efficient fabrication planning. The results confirm that software-based integrated workflows significantly improve the reliability and productivity of steel structure projects.