The Measuring of Connectivity in Urban Texture of Karaj Facing with Hazards

Transportation is the major pivot upon which the city systems subsist، therefore the level of interconnectivity of different segments of the city is a measure of performance of different components of the city and the efficiency of the entire city systems. Therefore، permeability or accessibility in an urban system can be estimated at the neighborhood or from the perspective of the entire city systems to evaluate the efficiency of the cities or neighborhoods. Regarding to topic of research، area of study and complicated existence of city as a spatial and social system، use of different methods and techniques with title of Compound Method is essential. In this study، indicators were extracted by Delphi technique and the studying of records. After weighting of parameters by FUSSY-AHP، the selected indicators were converted to distances maps in GIS-SPATIAL ANALYSIS EXTENTION software. Finally the final map of permeability area in Karaj mega city Were prepared. The findings of this research show that the accessibility to the communication network has highest points in the city associated hazards and after that the per capita net impact factor got the highest weight value. For there more our finding show the model urban connectivity of Karaj has significant relations with the physical growth pattern. Also the map analysis shown the most connectivity and unconnectivity regions by the measured coefficients of eight selected indicators.