Evaluation of RC building under seismic load based on BNBC 2006 and BNBC 2020 using Equivalent Static Force (ESF) Method

Abstract

Seismic activity is common in the region where Bangladesh is situated. There could be more significant earthquakes in the future. Numerous tall buildings are damaged or destroyed when earthquakes occur. The Bangladesh National Building Code (BNBC) is a piece of legislation that has been around since 1993 (it was officially gazetted in 2006) with the goal of maintaining building standards and reducing the dangers to human life that are associated with construction. Several proposed revisions of the code were developed to account for developments in earthquake engineering. A new code, “BNBC 2020,” has been published in a gazette notice in 2021. The purpose of this research was to examine the differences between the Base Shear, Storey Shear, Lateral Displacement, and Inter Storey Drift provisions of BNBC 2006 and BNBC 2020, as well as the effects of the earthquake guideline of BNBC 2020 on the design of a structure in each of Bangladesh's seismic zones by Equivalent Static Force (ESF) method. This study uses ETABS to model, analyze, and compare a ten-storey apartment complex. Since BNBC 2020 outperforms BNBC 2006 in every metric considered in this study, a structure designed in accordance with BNBC 2020 will be safer but more expensive. There are four distinct seismic zones in Bangladesh; however, Zone-3 of BNBC 2020 stands out as the most active.