Reinforced concrete (RC) buildings designed before the mid-1970s may have serious structural deficiencies and are considered substandard according to current seismic design criteria. Specifically, the failure of the beam-column joints has been the cause of building collapse in many recent earthquakes worldwide. This report evaluates the seismic performance of beam column joints with three different details of beam and beam-column joint reinforcement.This work shows that the comparison study of SMRF and OMRF .It carried out to observe the difference in behaviour of buildings.