Comparison Of Effects of Wind Load AND Seismic Load On Low-Rise And High-Rise Multistoried Structure According To BNBC 2020 By Using ETABS

Abstract

The Bangladesh National Building Code (BNBC) specifies and regulates the general specifications for structure, architecture and design parameters in Bangladesh. In the last three decades, Civil Engineering techniques, knowledge, and materials as well as design parameters have been modified as per requirement. Therefore, BNBC 2020 was written to reflect the transition. In this study, a systematic and parametric structural analysis of a Six-story (Low rise) and Fifteen-Story (High rise) residential building was analyzed (ETABS 17.0.1 software) by using BNBC 2020.In this project lateral load (Earthquake and Wind) affects structural analysis and design of high-rise infrastructure for Dhaka city. The decision-making parameters for structural analysis and design are tremor and wind forces, story drift, wind and seismic shear and base shear for seismic forces according to BNBC 2020. In this study, the maximum story displacement of low rise 1.871, 1.344, 0.823, 0.823 and high rise 2.597, 1.443, 2.206, 2.775 multistory structure is for load EQX, EQY, WX and WY respectively. And the maximum story drift of low rise1263.71, 620.06, 1294.39, 1294.39and high rise 0.00648, 0.00244, 0.001344, 0.001692 multistory structure for load EQX, EQY, WX and WY respectively. The comparison of the aforesaid design parameters is depicted graphically, and relevant tables are presented in this research article. In comparison of wind load and seismic effect on low rise and high-rise multistory structures, the requirements of BNBC 2020 usually result in a less cost-effective design with a higher safety margin.