Ground excitation is the major cause of failure in reinforced concrete structures constructedrnin seismically active zone. This can be due to either the unpredictable nature of the seismicrnexcitation or due to lack of proper structural design, detailing and construction. Duringrnseismic excitation the response of structures should be estimated appropriately. For responserndetermination of structures, codes fail to predict the real time response of structures. Hencernexisting performance assessment should be done using a reliable and easily applicablernanalysis procedure. rnThe revised Ethiopian building code (EBCS-EN-2014) shows a major change on the expectedrnpeak ground acceleration (from 0.05g to 0.1g) for Addis Ababa. For the past several yearsrnlarge numbers of buildings are designed and constructed using the previous building code.rnThe performance of these structures is highly affected by this change. There for it isrnmandatory to assess the performance of the existing structures using provisions of revisedrncode. This study focuses on condominium buildings as they are constructed in large scale allrnover the country and as they are areas where people are congregated. The study is done underrnthe assumption that premature failures are not expected to happen. rnA planar frame was taken from the representative 3D case study building. The capacityrndemand comparison was done for each member of the frame using EURO CODE and ACIrnprovision for stiffness reduction factor. The frame fails to satisfy minimum codernrequirements even after the consideration of moment redistribution. rnIn the aim of saving the structure load reduction was performed as engineering solution. Thernsolution improve the structural performance but still it is unsafe. rnA mechanistic solution was also proposed to utilize the reserve capacity of the structure. Thernsolution being pushover analysis with fiber based modeling which capture the nonlinearrnproperties. Seismostruct and SAP2000 software were used for analysis. rnElement level verification was done using both software followed by frame level verificationrnwhich will address effect of redundancy. At relatively low loads prediction obtained fromrnboth software give consistent result with the experimentally obtained data At a relatively highrnload the result obtained from Seismostruct gives a better prediction of the experimental result. rnWith the aim of investigating the stiffness reduction factor recommended by EURO CODErnand ACI extent and progress of crack checked. For this particular frame it is found out that the columns reduction factor is closer to ACI provision while the beam reduction factor isrncloser to EURO CODE provision. rnFinally the case study building was assessed for its performance level, for soil class B thernresult shows that the structureâ€Ÿs performance level do not satisfies drift requirements forrnoperational and immediate occupancy but it is adequate for life safety and collapsernprevention. rnFrom the study it is found that the use of pushover analysis results in 25.6% increment inrnshear capacity from Seismostruct and 16% increment in shear capacity from SAP2000 forrnthis particular frame. The higher increment from Seismostruct is expected due to the plasticrnzone consideration which is a plastic hinge in SAP2000. The advantage obtained by using thernpushover analysis may increase or decrease depending on the rate of progressive hingernformation, length of the plastic hinge and other parameters.