Development of space syntax theory on Iranian city_case study Yazd

The present study intended to indicate the feasible application of the traditional urbanism and uniquely urban form to solve some of the new urban problems. One of the urban design and architecture is Neo-Traditional Development, That have regard to the traditional values .New Urbanism, Urban Village, Transit- Oriented Development are most basic idea of NTD. The mentioned tendency lead to have usefulness for the modern urban problems and most solemn of urban sprawl. Part of the Middle Eastern urbanism as analogously the Iranian traditional urbanism can have benefit for boosting the quality of sustainability and life in the new cities. The connection between the traditional urbanism and study and new urban problems is frequently inattention in the literature related urban planning of Iran. That this study focuses on the research exerts is the interactions of urban form with environment and transportation. The question of mean research answers are: which specifications of the traditional Iranian urbanism could be benefit and used to solve some of the new urban problem of the country? And another question is how can the affective traditional city characteristics be exerts to solve and ease some of the modern problem? To reply the first question the previous literature about the considered historical cores of the Iranian cities and traditional cities. In addition new date is built by attention of case study cities in the Yazd center of Iran. The witnessing of the city is done by literature review, direct observation, and application of Space Syntax theory. Spatial comparison between the new developments and structures of the historical cores of the cities an important section of this part. It is aim to indicate how there is little equilibrium between sustainability and accessibility in the historical cities. Depth, Integration, cone, connectivity are of the Space Syntax indexes that are used in this study.To reply the second question, some public strategies are offered by descriptive attention to formulated characteristics of the traditional Iranian urbanism and seven urban problems of the study. The seven urban problems are environmental pollutions, urban sprawl, land consumption, public transport, and unsustainable transportation, sense of place and community and social relationships. Analysis results of the traditional city of Iran can also be suggested for the medium-sized cities of the center, east, south and west of Iran. It is recommended to focus more on these strategies to build better quality of life in the Iranian cities. Keyword : Neo-Traditional Development, New Urbanism, Iranian traditional Urbanism, Sustainability, Urban problems, Yazd, Space Syntax theory, Spatial comparison.