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GREEN BUILDINGS

Today even the most advanced building or factory in the world is still a kind of steamship, polluting, contaminating, and depleting the surrounding environment, and relying on scarce amounts of natural light and fresh air. People are essentially working in the dark, and they are often breathing unhealthful air. Imagine, instead, a building as a kind of tree. It would purify air, accrue solar income, produce more energy than it consumes, create shade and habitat, enrich soil, and change with the seasons.A green building is one which uses less water, optimises energy efficiency, conserves natural resources, generates less waste and provides healthier spaces for occupants, as compared to a conventional building.A green building or sustainable building is an outcome of a design philosophy which focuses on increasing the efficiency of resource use , energy, water, and materials . while reducing building impacts on human health and the environment during the building's lifecycle, through better siting, design, construction, operation, maintenance, and removal. Green building is interpreted in many different ways, a common opinionis that they should be designed and operated to reduce the overall impact of the built environment on human health and the natural environment by:

1)Efficiently using energy, water, and other resources
2)Protecting occupant health and improving employee productivity
3)Reducing waste, pollution and environmental degradation.