A.M Moradi - Phd of Iran University of Science and Technology, Tehran, Iran
F MehdizadehSeradj - Phd of Iran University of Science and Technology, Tehran, Iran
S Tajeddini - Master Student of Iran University of Science and Technology, Tehran, Iran

Many purposes in urban growth and sustainable development are gained through conservation of the urban valuable heritage. Paying attention to the all city components causes sustainable conservation of the city to occur. Unfortunately, in modern cities disharmonious growth is seen. While the city is emptied inside and it has lost many qualifications, surrounding areas are grown greatly and major areas as well as the main components are not developed. Conserving the urban valuable infrastructure is one of the significant categories and plays an important role in formation of urban tissues in growing and developing of the city.In this paper the historic and worthwhile tissues of cities in Iran are dealt and various infrastructures from environmental, continental, economical and social aspects are evaluated. The effect of infrastructures on formation of urban areas regarding environmental –regional constraints and their influence on the form of urban areas in addition to adoption of urban areas in urban extension, urban streets, social-economical cooperation in urban areas as well as the effect of city identification on its body are studied. In this research, specifically the effect of urban infrastructures likes aqueducts and Vaqf system in formation of passages, urban streets and urban open spaces as well as their progress is investigated. Obtained results show that sustainable urban policies can be applied. By knowing these infrastructures thoroughly and the way they have an effect on city formation and their interactions with urban tissue formation, urban restoration projects can be presented.

Infrastructures, Urban, City formation, Conservation, Sustainability