The Roll of Formal and Social Patterns in Organization of Open Spaces of Residential Complexes (Comparison of 20Th Century Urbanization Experiences and Iranian ones)

Social patterns in open space organizations have a key role in shaping most of 20th urban theories. This paper identifies the formal and social patterns in planning the residential open spaces in famous theories and projects of urbanization during 20th century and compares them with experiences of Iranian urban organizations in an analytic manner from the past to present. Historical – interpretative method established in this research was combined with case studies. From the formal viewpoint in the early 20th century theories, 4 categories of open space organizations could be identified: "grid organization", "linear", "central" and "complex" patterns, which have been tended towards complex patterns during the second half of the century. Moreover, try to remove social hierarchy, providing class equality and common ownership of open spaces seen in the first half of the century has been replaced by social stability, social equality and simultaneous attention to both public and private open spaces. However, the modern construction in country is almost the continuation of the early century proven strategies that mainly use the central and grid patterns and lack of certain social patterns in their designs. Hence, considering current world conditions and national experiences and achievements and belief principles, it is suggested to pay attention to the social concepts like social capital social interaction along with suitable patterns of open space organization (for example, complex) while particular separating and dividing public-private fields and measuring public priorities.