An analysis of the impact of wind load and seismic activity on low-rise and high-rise multistory structures, based on the BNBC 2020 standards, using the ETABS software.

Abstract

The general requirements for structural, architectural, and design elements in Bangladesh are outlined and governed by the Bangladesh National Building Code (BNBC)-2020. Civil engineering methods, materials, and design parameters have evolved over the past thirty years in response to changing needs. As a result, BNBC 2020 was drafted to account for the change. A systematic and parametric structural analysis utilizing BNBC 2020 was conducted on a Five-story (low-rise) and Twelve-story (high-rise) residential structure using ETABS 16.0 software. In this project, the lateral loads of wind and earthquakes impact the structural analysis and high-rise infrastructure design for the city of Dhaka. According to BNBC 2020, tale drift, wind and seismic shear, base shear for seismic forces, and tremor and wind forces are the decision-making factors for structural analysis and design. The maximum story displacement of a low-rise to high-rise multistory structure in this study is, respectively, 121.84%, 287.05%, 219.72%, and 450% for the loads EQX, EQY, WX, and WY. Furthermore, the maximum story drift for a low-rise to high-rise multistory structure is 60.44%, 66.58%, 113.08%, and 100.488%, respectively, for load EQX, EQY, WX, and WY. The standards of BNBC 2020 typically result in a less cost-effective design with a higher safety margin when comparing the seismic effect and wind load on low-rise and high-rise multistory structures