Analyzing the climatic usage balcony in the residential buildings of Tabriz on the basis of national provisions of building

According to the equality Terms and conditions of twenty-two national building regulations topics in all cities of Iran and being forced to run them around the country, balcony design course is the same in terms of size and its only appearance is different. However, each climate has its own requirements for the design. The aim of this article is study about balcony climate features in residential buildings in Tabriz, according to the national building regulations.
This article is based on analytical-descriptive research collecting information based on documents and comparative.At first, by using the canopy depth formula, canopy depth and penetration of sunlight into the buildings in Tabriz are calculated and once again, this process is repeated according to the national building regulations, and finally the results are checked through the two methods.
Findings: In the condition of N=0, the difference in penetration of sun in the south side of building, between regulations and optimum condition is 71 cm, and in the condition of N=15, is 59 cm.
Discussion and the results show that, balcony with only climate feature and using as a canopy, with depth of 1.2m is more than enough and it is absorbing the sunshine to enter into the building.