Earthquake Damage Estimation of District 9 of Mashhad Municipality Using RADIUS Model based on GIS

District 9 of Mashhad municipality with a spread over 3275 hectares and the population over 329562 people, is one of the most important districts of Mashhad, which is threatened by three major faults (South of Mashhad, Sang Bast – Shandiz and Tous). Existence of important sites such as Ferdowsi University, Shahid Khorshidi and Shahid Beheshti teacher training centers, Shahid Montazeri School and also non profit educational centers such as cooperation organization training center of Khorasan Razavi municipalities and etc. reflect the high importance of this district from the urban view. Therefore, the studies related to the seismic vulnerability of district 9 of Mashhad and finding the best model for the study of urban management requirements of Mashhad. This is an applied- descriptive study. Data was gathered from relevant organizations in accordance with the standards and requirements of RADIUS model. Data analysis was performed according to methods based on database and utilize the RADIUS model and softwares based on the geographic information system approach. The greatest damage caused by South of Mashhad fault scenario and the least damage was caused by Tous fault scenario. In total, the greatest vulnerability is in the areas that have a high population and density building and areas which type of their soil is rocky and have low and medium density, have the least vulnerability. Being near and far from the fault is effective in vulnerability intensity. By using the findings, the radius model has the highest accuracy and performance.