The fast and unusral growth of population from one side and the necessity of housing in large demand from the other side, have made creating, tall buildings as a solution against the land problem imperative. Now a day, the basis of many urban planning are to incrilase density and to build tall buldings . that is, as much as possible , to decrease the surface of ground site in order to dwell some more people and to exploit the free land for the puplicly open space, required services as well as the bettet use of the urban intrastructural to this aim, aur cities, specially the city of Tehran are presently facing with the daily growh and expansion of the tall buildings on their land. The said events are materialized in such circumstance , that the law and regulations in this respect are not also available . the survey done on the tall buildings of the sity of Tehran are indicating the numerous challenges and problems in many tall buildings. The said fact itself is the effect of nonrespecting to the regulation and criteria in locating such building with in the city
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