Structural Analysis and Design of a Multi-Storey Residential Building as per IS Codes Using ETABS

The structural analysis and design of multi-storey residential buildings require rigorous evaluation to ensure safety, serviceability, and compliance with codal provisions, particularly in seismic-prone regions. This study presents the comprehensive analysis and design of a G+4 reinforced concrete residential building using ETABS software, in accordance with Indian Standard codes IS 456:2000, IS 875 (Part 1 & Part 2):1987, and IS 1893 (Part 1):2016. The structure is modeled as a three-dimensional space frame, and gravity loads including dead load and live load are considered as per IS 875, while seismic forces are evaluated using the equivalent static method prescribed in IS 1893. Design of structural elements including slabs, beams, and columns is carried out as per limit state method in IS 456, ensuring strength, ductility, and serviceability requirements are satisfied. Load combinations are generated in compliance with codal recommendations, and structural performance under seismic loading is assessed through drift and stability checks. The results indicate that the building exhibits acceptable seismic behavior with storey drifts within permissible limits, confirming the adequacy of the structural system. This study highlights the effectiveness of ETABS as a robust tool for the seismic analysis and design of reinforced concrete multi-storey buildings, facilitating accurate modeling, efficient design, and compliance with Indian seismic design standards