A Comparative Study of Lateral Load Analysis Considering Two BNBC Codes Using ETABS Software

Abstract

The Bangladesh National Building Code (BNBC) specifies and regulates the general specifications for structural, 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. As a consequence, BNBC 2010 was written to reflect the transition. In this study, a systematic and parametric structural analysis of a ten-story residential building was analyzed (ETABS 16.0.2 software) by using BNBC 1993 and BNBC 2020 for four different locations (Patuakhali, Chandpur, Rangpur and Moulovibazar) suited in several zones to demonstrate how lateral load affects structural analysis and design of high rise infrastructure. The decision making parameters for structural analysis and design are tremor and wind forces, story drift, wind and seismic shear, moment of unique beams and columns, and base shear for seismic forces according to BNBC 2020 vary significantly compared to BNBC 1993. In this study, the earthquake load varies from 7.42% to 59.78%, while wind force ranges from 19.16% to 36.14% in the x-direction and 49.51% to 63.78% for y-direction, and story drift for earthquake load ranges from 47.96% to 51.27% and for wind load ranges from 29.89% to 34.45%. The comparison of the aforesaid design parameters is depicted graphically, and relevant tables are presented in this research article. In comparison to BNBC 1993, the requirements of BNBC 2020 usually result in a less cost-effective design with a higher safety margin.