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बेसिक इंग्लिश का दूसरा सत्र (कक्षा प्रारंभ : 22 अक्तूबर, शाम 3:30 से 5:30)
Green building
Dec 02, 2013

A building which can function using an optimum amount of energy, consume less water, conserve natural resources, generate less waste and create spaces for healthy and comfortable living, as compared to conventional buildings, is a green building.

When a number of green buildings are located in proximity, they would create a green zone, providing much healthier environment and minimise heat-island effect.

GRIHA Rating System

The GRIHA Rating System contains 34 evaluation criteria with 100 points. These criteria have been categorized into (i) Site Planning including conservation and efficient utilization of resources, health and wellbeing during building planning and construction stage (ii) Water Conservation (iii) Energy Efficiency including energy embodied & construction and renewable energy (iv) Waste Management including waste minimization, segregation, storage, disposal and recovery of energy from waste and (v) Environment for good health and wellbeing. Additional criteria for innovative developments such as alternative transportation, environmental education enhanced accessibility for physically/mentally challenged are also awarded points. GRIHA has a 100-point system consisting of some core points, which are mandatory to be met while the rest are optional, which can be earned by complying with the commitment of the criterion for which the point is allocated. Different levels of rating (one star to five stars) are awarded based on the number of points earned. The minimum points required for rating is 50. Buildings scoring 50-60 points, 61-70 points, 71-80 and 81 – 90 points will get one star, two stars, three stars, and four stars, respectively. A building scoring 91-100 points will receive the maximum rating, which are five stars.

Out of these 100 points up to 8 points are earmarked for the renewable energy applications including upto 3 points for Solar Water Heating systems.

The futuristic green buildings are to use green materials which are in research stage now.

Green wood: A Stanford team has done a research for wood alternate. Hemp fibers and biodegradable plastic were pressed together and heated to form layers and this material is as strong as wood. When buried in land fill, it degrades faster.

Green Cement: Bruce Constantz at Calera, based in Los Gatos, has developed a green method to produce both cement and aggregate, another component of Concrete. Their method sequesters Carbon Di Oxide from power plant flues and mixes the gas with sea water to produce the mineral raw materials of concrete. For every ton of green cement Calera manufactures half a ton of fly ash from coal plants is used apart from preventing production and emission of Corbon Di Oxide.

Other Green Building materials: Renewable plant materials like bamboo (because bamboo grows quickly) and straw, lumber from forests ecology blocks, dimension stone. Recycled stone, recycled metal are some of the other materials used in a Green Building.

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