Evaluation of Effective Variations on Urban Housings Vulnerability

The occurrence of earthquake has caused a lot of damages to urban houses which is due to ignoring basic factors on housings vulnerability against earthquake. Therefore, it is necessary to pay attention to study and analysis of effective variations and determine the role of them in order to reduce vulnerability. In this research with taking consideration of effective variations such as; quality of buildings, age of building, kind of construction materials, accumulation of population and density, surface occupation of building along with other effective factors, their correlation has been investigated by the use of SPSS software. Findings of this research indicate that there is a meaningful relationship between vulnerability variations and other mentioned variations. Furthermore, in regression analysis, the amount of quality variations in comparison to other variations has been shown to weigh more; therefore, it has much more role in vulnerability. Consequently, the other variables such as the kind of building materials, oldness of the building, surface occupation of the building, and the accumulation of population have been located in the next level of weights.