A safe examination of structures have raised the most important problem because of the increasing age of buildings. The purpose of this study is understanding the damage location and degree of structures that the most primary structure forms, simple supported beam and two span beam. This study's process is following. First, we forced artificial damages on the finite element models, second, subjected to a statistic loading, found out the deformation after performing a finite element analysis. Finally, we understood the location and degree of damage using computed deformation. We performing using a finite element analysis program ANSYS, defined the damage with a lower value of bending stiffness El.