Elham Saligheh
Mohammadreza Valizadeh
Amin Ansaroudi

According to increasing problems with the modern world, sustainable systems have been one of policy priorities in developed countries. These countries in implementing such policies try to solve various problems of cultural, social, environmental, etc. To achieve the goals of sustainable development environmental sustainability in relation to architecture has a great importance and environmental problems forced architectures to think about. Human need for nature is one of the most striking things that easily neglected. Architects and urban planners try to design a city which most of it‟s areas are dedicated to the significant parks and green spaces. The usage of green roofs and in other words using unused roof space to create green space is considered. This idea was introduced first in 1970 following the first oil crisis. Nowadays, implementation of green roofs is not only an attempt to create a sustainable architecture, but also in terms of aesthetics as a tool in the hands of architects and designers. This article attempts to identify the more green roofs and their implementation practices and also building of Nanyang university of Singapore, which uses green roof techniques step toward creating a sustainable environment as an example of this approach

Green Architecture, Green roof, Sustainability, Nanyang University, Singapore