Recently,　as　a　result　of　seismic　events　occurrences　in　Italy,　building　safety　has　become　a　topic　of　considerable　interest.　Most　of　existing　reinforced　concrete　frame　buildings　designed　for　vertical　loads　only　and　without　construction　details,　which　guarantee　ductility　and　dissipative　capacity.　Then　it　is　necessary　to　develop　a　reliable　and　practical　analysis　procedure　for　professional　use.　This　is　confirmed　by　intense　research　activities　to　identify　the　capacity　and　the　safety　level　of　existing　structures.　Between　existing　approaches,　the　Incremental　Dynamic　Analysis　(IDA)　is　considered　to　be　one　of　the　most　accurate　methods　to　estimate　the　seismic　demand　and　capacity　of　structures.　However　the　executions　of　many　nonlinear　response　history　analyses　(NL_RHA)　are　required,　therefore　approaches　non-linear　static　analyses　based　are　studying　to　aim　less　onerous　methods.　The　research　discussed　in　this　paper　deals　with　the　proposal　of　an　efficient　Incremental　Modal　Pushover　Analysis　(IMPA)　to　obtain　capacity　curves　by　replacing　the　nonlinear　response　history　analysis　of　the　IDA　procedure　with　Modal　Pushover　Analysis　(MPA).　Finally,　these　approaches　were　applied　to　an　existing　case　study　that　is　a　concrete　framed　building　of　strategic　relevance.