(Analysis of factors affecting physical safety in Passive defense patterns(Case study: vulnerable fabric of Kashan city)

Assessing and analyzing how the spatial distribution of urban areas in the face of potential natural disasters is one of the important strategies that can be effective in managing vulnerability and ensuring optimal city security. The spatial dimension of this issue can be considered in assessing the physical safety of the texture of the city of Kashan from the perspective of passive defense, especially the historical sites that are more vulnerable and more important. Also, the disparity of the old access network with the needs of today and against the crisis, and the lack of road network and the lack of adequate infrastructure for the relief and temporary accommodation of the injured, the compression and density of parts, high tensile alleys Lack of proper access and lack of open spaces to accommodate the injured has caused the city’s historical context to be more vulnerable. By observing the requirements of non-operational defense in this research, it increases the awareness and participation of residents and government and the resilience in the context. will be. However, the aim of this research is to realize the safety of the vulnerable tissue of Kashan city from the perspective of non-operating defense. The research method of this research is in terms of purpose, theoretical-practical, field of field, nature and method, descriptive-documentary and analytical type of surveying. The analysis method in this quantitative and qualitative research is weighted by ANP network analysis (in the SUPER DECISIONS software package). The results indicate that the physical properties of the building as one of the physical safety measures along with Physical access has the greatest impact on natural disasters and has the highest role with relative weight (0.46) in the physical safety of neighborhoods of historical texture.