A Comparative Study on Design & Analysis of G+5 Residential Building Subjected to Wind and Seismic Load Designed and Analyzed Manually and Using ETABS

Abstract

The rapid urbanization and growing population have escalated the demand for high-rise residential structures. This project presents the complete structural analysis and design of a G+5 (Ground floor plus Five floors) residential building using ETABS (Extended Three-Dimensional Analysis of Building Systems). The building is located in Visakhapatnam (Seismic Zone III) and is designed as per Indian Standard codes (IS 456:2000, IS 875, and IS 1893:2016).

The project involved creating a detailed 3D model, assigning material properties (M25 concrete and Fe415 steel), and applying various loads including dead loads, live loads, wind loads, and seismic loads. The analysis included both static and dynamic methods to evaluate the structure's behavior under different conditions. Key parameters such as story displacements, inter-story drifts, bending moments, shear forces, and axial forces were analyzed.

The results show that the maximum story displacement was 45.2 mm, and the maximum inter-story drift was 0.00183, both well within permissible limits. All structural elements were designed successfully, with beams requiring up to 4-25mm diameter bars and columns designed for axial loads up to 3200 kN. The use of ETABS demonstrated significant advantages in accuracy, efficiency, and comprehensive analysis capabilities compared to traditional methods.