M Mohammadi Tabar - Graduate student Institute of Higher Education Beyhagh
GholamReza Tadayonfar - Assistant Professor Hakim Sabzevari

For years, the effects of local conditions geological and soil on the intensity of earthquake ground motions and damage of the earthquake is known amplitude seismic waves passing through layers of soil near ground level, a significant increase is expected from this mechanism, the source of earthquakes and the movement of waves and topography of great importance is also another important factor seismic design type of soil is that if the soil is hard or soft makes the response of the structure to the soil vary and if Keeping the soil structural response and resonance to occur.

Site Effect - Effects of Topography- Effect Layers