Modeling the vulnerability of urban buildings using Delphi and AHP methods in GIS (Case study: Region 6 of Tehran municipility)

Throughout history، cities have never been safe due to the damages of human and natural disasters would bring. So that in the past، the cities were the war’s last target، but now with the development of technology، those hindrances have turned into the first war targets. In fact، what poses war and air raids as a threat، is just the problem of encountering it and being. One major way to prepare facing such threats، is the knowledge about the degree of its vulnerability when they occure. So، it depends on taking up some methods to diminish the vulnerability unstability. What the researchers were look for، was the modeling the vulnerability of the city buildings (one of the most important urban component) in one part of the Tehran (region 6 of Tehran municipility). Since vulnerability is made up of various criterions، so the proposed model in this research is a kind of multi-criteria model (multi attribute decision model)، and according to the spatial essence of the criteria، this model has been carried out in GIS (MCDM-GIS model). Delphi method has been used to survey major vulnerability factors with the help of urabn، passive defence، structure، and architecture experts. The modeling of the 9 criteria has resulted through Analyti Hirerchical Process (AHP)، and it shows that about 38 percent of building has low vulnerability، about 60 percent has medium vulnerability and 2 percent has high vulnerability (over 60 percent of buildings has plus-average vulnerability) which shows taking necessary actions to decrease vulnerability through passive defence.