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Moment resisting steel frames (MRSF) are widely used as lateral load resisting systems for low-to medium-rise steel buildings. They are highly regarded for their ductility and seismic performance. In this study an evaluation of moment resisting steel frames designed according to the Egyptian code is conducted using a static push over analysis. Two steel office buildings, six-and twelve-story frames are considered in this investigation. The frames are designed based on two design models, the strong-joint model and the weak-joint model. In the weak-joint model shear deformation in the joint panel zone are allowed. An inverted triangular lateral force distribution is applied to the structural models in each step of the analysis. The performances of the MRSF's with strong-and weak-joints are evaluated through global and local performance parameters. The global performance parameters are the roof drift ratio and the maximum story drift ratios. The local performance parameters are the rotational ductility ratios of columns, beams and panel zones. The results obtained indicated the satisfactory level ductility of strong-joint MRSF's designed according to the Egyptian code up to a 2.5% maximum story drift ratios. The maximum rotational ductility ratios of columns, beams at these story drift limit are within the allowable ranges. For the weak-joint frame, the inelastic behavior concentrated at panel zones and also was within the allowable ranges at maximum story drift ratios of 2.5%. However, the weak-joint frames shown lower levels of strength and stiffness in comparison with the strong-joint MRSF's.