Fragility evaluation assessed for RC moment-resisting frame structures designed by the Nepal Building Code considering deformation capacity. The site soil type, the number of stories, and seismic protection intensity were supposed to be design variables. Also, the limit state (global seismic damage index) and maximum inter-story drift ratio had employed as the damage identifiers. The non-linear static push-over analysis determined the limit state of the structure. The probability of exceeding each damage level in each scaled earthquake intensities of applied 40 ground motions is determining by incremental dynamic analysis (IDA) with the aid of dynamic response time history analysis. The fragility curves of the target building and revised model building derived by the statistics analysis are considering lognormal accumulative distribution function. The fragility evaluation of the target structure and revised model against earthquakes motion were examined using the developed fragility curves. The results indicate that target RC frame structures designed by the Nepal Building Code (NBC 105:1994 and NBC 110:1994) can be achieved satisfactorily with some modification in the limit state of shear design.
Keywords: Limit state, maximum inter-story drift ratio, incremental dynamic analysis, fragility curve.