The collapse probability of a structure designed according to the current domestic seismic design code, KBC 2009 is evaluated by the risk integral which simultaneously considers the seismic hazard curves and the probabilistic distribution of a structural collapse capacity. The evaluation shows that the prototype frames considering in this paper present different collapse probabilities in 50 years according to the heights and locations, although they are designed according to the same design requirements for steel intermediate moment resisting frames prescribed in KBC 2009.