Abstract
In order to implement the proper design of structures in Damascus, the seismic behavior of soil and structure was examined numerically, and the seismic characteristics of both of them were determined. The study is carried out through two major steps; first, examining the seismic response of ground due to strong and weak earthquake motions; second, examining the soil-structure interaction due to the same motions. All seismic characteristics of both ground and structure will be determined from these analyses such as shear forces, displacements, bending moments, stresses ...etc. strong nonlinear properties were displayed, which proved the equivalent static method used in Syria insufficient.