Analysis of effective indicators in the historical structure of contemporary cities with passive defense approach (Case study: historical context of Khoy city)

Historic and worn-out structures are more exposed to threats and dangers than other urban structures due to non-observance of engineering systems, inefficient communication network, lack of urban facilities and equipment, and non-observance of passive defense principles. Therefore, indicators with a passive defense approach should be developed to determine the degree of stability of the structure of historical contexts. Therefore, the purpose of this study is to analyze the effective indicators in the historical structure of contemporary cities with a passive defense approach. The type of research is applied and the research method is descriptive-analytical and information collection has been done through library-field, field and questionnaire studies. 10 criteria and 25 indicators were selected and analyzed using ANP method. The results show that the criteria of proportional distribution of population-absorbing uses, physical strength of texture, privacy of hazardous centers, composition of urban texture and efficiency of road network with scores of 0.109, 0.189, 0.122, 0.12 and 0.106, respectively, in the first zone of influence in historical textures Neighborhood and adaptation indicators, required spaces for relief, access to relief and treatment centers and safe spaces with a score of 0.088, 0.085, 0.078 and 0.065 in the second zone of impact on historical contexts and the compression system index with a score of 0.038 in the zone Third are the effects on historical contexts, and at the end, suggestions were made to improve the security and safety of Khoy's historical context.