Earthquake has always endangered cities. This article mainly focuses on the question “whether seismic damages could be diminished through the presentation a preventive operational pattern dealing with physical and nonphysical features of civil defense”. Tehran, the most populous metropolis among Iranian cities is to the south of Alborz mountain range, located on potentially dangerous fault- lines. By Civil Defense Emergency Management (CDEM) preventive guidelines in a part of district 10 of Tehran, within the Ray fault’s danger zone, it is recommended that the earthquake vulnerability zoning plot of the area be compiled and accordingly, operational solutions encompassing organizing open spaces, redistributing and re-allocating land uses, enhancing relocating disaster management centers to more commanding locations are offered to be implemented within the physical structure of the area. The IHWP method and the Raster Calculator tool in GIS have been used for compiling the zoning of earthquake vulnerability.