Thinking and Action Stages in Defense Architecture of Urban Environment in Tabriz Case study: Passive defense in restorations processes after earthquake in 1779

The aim of the present research is to prepare a conceptual framework for traditional defensive architecture of Tabriz in historical stages of restorations in destructive earthquake of 1779. The importance of the research is that after the earthquake the anatomic totality of the city was destructed and the city lost most of its population and the life system was plagued in individual and collective scale. The native managing system was able to create a capable defense mechanism in order to protect the harmed ones who wanted to continue life. The time and place condition was in a condition that safety management had turned to an important element in crisis management system. Although, the limitations raised by the crisis, had made the decision making difficult, however native management was able to take effective actions for the aim of defense through recognizing, ordering and directing the financial and moral abilities in the environment. The importance of research subject is to understand how the new bulwark of the city was built in a condition that all known norms of the city had vanished. The present research is qualitative and is done in historical-interpretive method that attempts to respond following questions: A. What was the reason for necessity of planning and building the new bulwark? B. What were the principles of planning new bulwark?