Vulnerability assessment of residential units in Shiraz city based on skeleton index

Identifying the vulnerabilities of urban residential areas، zoning and vulnerability prioritization of these areas are the prevention and preparedness policies for retrofitting buildings. This paper aims to determine and prioritize the vulnerability of residential units in urban areas of Shiraz city based on skeleton index. Therefore، a multi-objective model with promising applications is presented for residential units’ vulnerabilities in the city. In this descriptive-analytical and applied research، the vulnerability of residential units was performed on the basis of 7 criteria by using both the analytic hierarchy process for weighting the criteria and GIS for integrating the related mapping. The results indicated that design and urban planning in city of Shiraz are not based on physical parameters. So that the highest vulnerability due to access roads network and open space and the lowest vulnerability are related to district 8 and districts 1 and 6 respectively; As a result، for reducing the vulnerability of urban areas in Shiraz، the districts of 4 and 1 are to planning for priority based on the criterion of proximity to strategic areas. However، priority planning for different districts is as follows: the districts of 2، 5، 4 and 8 based on population density; the districts of 8، 3 and 7 based on open space and area of the residential units; the districts 1، 5 and 6 due to building density; and districts of 1، 5 and 8 based on standard life building in residential units and access network. The closer we get to the center of the city، the vulnerability of residential units increased. This is due to some items such as sensitive military sites، high population density and residential areas with small size in the city center.