Evaluation and analyze the viability of metropolitan areas in the central part (Case Study: Region 12 of Tehran)

Viability as an approach to achieve sustainable urban development and a host of features that make the city an attractive place to live. Today viability in most developed countries as a guiding principle in the framework of sustainability in urban policy and planning has spread. The research method is descriptive - analytical and practical purpose is in view. The data collection method is used for documentary library and field. The results showed that the cumulative variance explained by economic factors, social, environmental and physical 94.472 94.472 percent, which shows the relevant factors suggest viable. On the other hand, we can say that the biological consequences of District 12 of Tehran is different between the regions of the 12 indicators in terms of viability is no significant difference. Finally, the results of the analysis showed that 79.2 percent of the viability depends on four variables stated in the study and given the significance of the test F (19.846) at the level of 99 percent can be said that in the regression model study variables economic, social and physical well capable of determining their viability.