Green buildings are also known as sustainable buildings, which are designed, built, renovated, operated and used in an ecological and resource-efficient manner.

In fact, Green buildings are designed to meet certain objectives such as protecting occupant health; improving employee productivity; using energy, water, and other resources more efficiently; and reducing the overall impact to the environment. These buildings with good overall environmental quality can reduce the rate of respiratory diseases, allergy, asthma, sick building symptoms, and enhance worker performance. The green building construction technique include following elements:- Elements of Green Building Construction Technique

1. Proper Ventilation Green Buildings provide adequate ventilation to all habitable rooms including bath rooms, kitchens with high-efficiency in-duct filtration system to allow proper drainage of air-conditioning coils to control humidity including heating and cooling systems which ensure indoor air quality.

2. Prevention of indoor microbial contaminationUnder this technology, construction and finishing materials are selected with zero or low emissions to improve indoor air quality.  Many building materials and cleaning / maintenance products emit toxic gases, such as volatile organic compounds (VOC) and formaldehyde  gases which result in  a detrimental impact on occupants’ health and productivity. Such products are not to be used in building construction and their finishing.

3. Utilization of recycled material for minimizing the cost of buildingDemolition and reconstruction of old buildings is a continuous phenomenon. Population and demand for buildings are increasing day by day whereas our resources are depleting in the same proportion. Building construction activities consume one-sixth of the world’s fresh water withdrawals, one-fourth of its wood harvest, and two-fifths of its material and energy flow. About 22 percent waste material (bricks, concrete, wood, steel, metals, steel pipes, plastic pipes, electric wires, sanitary material etc.) of demolished buildings can be reused or recycled thus prolonging our supply of natural resources and minimizing construction cost. In green buildings, about 25 % recycled material is used.

4. Installation of glass panels Instead of wood window glass panels are installed in green buildings to allow flow of natural light inside the building during day time.

5. Installation of Rainwater Harvesting SystemThe green buildings are well equipped with rainwater harvesting system to preserve depleting water resource.

6. Maximizing the use of renewable natural resourcesIn order to maximize the use of renewable natural resources in green buildings, the energy efficient equipments such as Compact Fluorescent Lights (CFL) and Solar Water Heating Systems etc. based on non conventional energy resources are installed.

7. Minimizing The Use of depleting resourcesSince, forest cover is depleting day by day in the world, therefore, use of fresh wood  is minimized in green buildings. Wherever, use of wood is considered necessary, in such buildings, the wood of fast growing trees is only used so that utilization of such material may not effect the ecological balance of the earth.