The main purpose of this study is the evaluation of the seismic performance of the existing RC building situated in Dhaka and constructed before the establishment of the National building code, 1993. Significance changes in seismic provisions have been brought in upcoming Bangladesh National Building Code (BNBC, 2017, draft). Therefore, it is necessary to evaluate seismic performance and the strengthening of old buildings to keep compatibility with the requirement of updated building code. This study compares the seismic evaluation results of building by the 2nd level screening method of Japan Building Disaster Prevention Association (JBDPA), 2001, and detail seismic evaluation method and suggests a suitable retrofit technique. To evaluate the seismic performance of the building by detail seismic evaluation method, non-linear static pushover analysis was performed according to ATC 40, 1996 / FEMA 273, 1997 /356, 2000 /440, 2005 and ASCE 41, 2013. The damage distribution and sequence of the collapse of the building were observed. It was found that detail seismic evaluation method provided most rational and practical results rather than 2nd level screening method of JBDPA, 2001 from the viewpoint of seismic evaluation of the building due to the target building was found to be weak-beam and high-rise building. Furthermore, the required strength for retrofit was easily estimated by this method. The new shear wall for retrofit proved to be effective in increasing the necessary seismic capacity of the building.
Keywords: Seismic evaluation, Detail seismic evaluation method, Non-linear analysis, Retrofit.