Vahid RAHIMI - M.Sc. student of Earthquake En gineering, Civil Engineering Faculty, Semnan University, Semnan, Iran.
Mohammad Iman KHODAKARAMI - Assistant professor of Earthquake Engineering, Civil Engineering Faculty, Semnan University, Semnan, Iran

In this paper, a new approac h on assessment of the retrofitting methods for the masonry buildings is presented in order to provide an ev aluation of the effects of the seismic performance improvement methods on thistype of building performances. For this aim, the results of experimental re search used to present a reliability analysis for evaluating the effects of reinforcement methods onthe damag e state in structure. With a focus on crack distribution method in samples, event tree of these tests are defined. With consideration of obtained event tree, the effect of re inforcement on damage state of samples was inv estigated. Result shows, whereas this method is very simple in comparison of other rigorous and more complex methods but, is very useful for fast and economic decision making in rural areas against disasters like earthquake.

Reliability Analysis, Ev ent Tree, Masonry Building, Fraction Mode, Ris k Combination