Assessment factors Process the deterioration of urban Old texture for rehabilitation and restoration: case study of Darab City

Urban deterioration is one of the serious problems and phenomenal unavoidable that a significant portion of textures from older cities and metropolitan areas have become obsolete and inefficient. Factors leading to deterioration of the urban environment, causing inconsistencies in the textures, increasing the dilapidated and abandoned urban spaces created for the old city. This research focuses on the application based on the library study and field observations. The purpose of this paper is evaluating the affective factors in the development deterioration urban old texture in order for rehabilitation and restoration (case study in Darab city). Assessing the relationship among these factors can be considered as a problem of decision making. Thus, we can test method decisions (dematel fuzzy) for relationships of mutual influence and influenced factors under the study used in such a way that the intensity of the effect of these mentioned factors and their significance is specified. In this research by the use of standpoints of experts and proficient urban planners the relationships among effective factors in the development of the deterioration texture old city of Darab was assessed. Indicators and under indicators were economics; managements; social and cultural; physically; bio­environmental which were recognized. The results reveal that economic factors (C1) have deterioration with the greatest influence and bio­environmental factors (C5) have deterioration the least efficacy. Otherwise, it can be said that economic factors are strong effective factors and bio­environmental factors are exhaustion factors.