With the development of civilization, as the pressure of the people is increasing on the urban areas day by day, the risk of the environment is increasing. The black smoke emitted from urban industries and vehicles is seriously polluting the atmosphere. Already, a survey has shown that in some cities the level of air pollution is two to two and a half times higher than tolerant levels and two. Instead of brick-and-mortar buildings, rapidly growing steel structures and multi-storeyed buildings ar