| dc.description.abstract | According to, the Bangladesh National Building Code (BNBC 2020) divides the country into
four seismic zones based on seismic risk levels. This study evaluates the structural response of
an 8-story reinforced concrete building across these zones, focusing on the final beam and
column section sizes and the required reinforcement percentages. The analysis uses the
Equivalent Lateral Force (ELF) procedure, with earthquake, wind, and gravity loads assigned
according to BNBC 2020 guidelines. Structural modeling and design are carried out in ETABS
based on American Concrete Institute code provisions under a Special Moment Resisting
Frame (SMRF) system. Service conditions are checked using property modifiers defined in
BNBC 2020 to evaluate story drift limitations, sway, soft story effects, and torsional
irregularity. Ultimate strength checks are performed using ACI 318-11 property modifiers. The
final section sizes are selected after ensuring that beam-column capacity ratios satisfy both
service and ultimate requirements. The comparative results show that structures in Seismic
Zone 4 require the highest reinforcement and largest section dimensions, followed by Zones 3,
2, and 1. | en_US |
