Maryam Abdolali Zanjani - Department of Engineering, College of Architecture, Shahinshahr Branch, Islamic Azad University, Shahinshahr, Iran
Kaveh Romez Khaksari - Civil Engineering, Dehaghan Branch, Islamic Azad University, Dehaghan, Iran

One of the most important purposes of sustainable development, paying attention to environmental problems: such as reducing the air pollution and enjoyment the clear energies. Considering the above problem and being the sustainable development in the field of made environment is called sustainable architecture. Therefore nowadays he man is looking for solutions in keeping the environment for the certainty of sustainable architecture to get to a stable place to spend a health life. Here building the green roof on city residencies is efficient for the cities, subsequently producing oxygen which can clean the pollution made from cars and industrial factories along the environmental keeping and has a clean air without any noise pollution for the people. (But this time on the roof , not next to them.) So in this article by librarian studying has tried to explain the sustainable architecture and its purposes. Then by investigating every kind of green roof systems and explaining. Their specifications, we will state the enjoyment as a practical solution to certainty sustainable architecture.

Sustainable architecture, Green roof, Buildings