Catastrophic consequences, both in terms of human and material losses on high interest structures, caused by exceptional events, brought AEC sector experts to show growing interest towards structural safety in last decades. In particular, the new concept of structural robustness was defined: robustness is intended in a more specific sense as the capability to support extreme loads due to exceptional event trying to prevent disproportioned collapse. Several researches have already been done, and a lot of efforts are still spent by scientific community with the objective to better understand the problem and to propose solutions regarding the structural robustness theme. The probabilistic analysis approach, integrates in this continuously developing context trying to define a more accurate structural design process which implies increasing efficiency in the whole realization process (from the design to the construction), respecting the established safety thresholds and looking also at the principle of economic sustainability.