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  1.  A green building, also known as a sustainable building, is a structure that is designed, built, renovated, operated, or reused in an ecological and resource-efficient manner.  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.
  2.  The green building industry sprung to life in the mid to late 1980's as oil prices started to rise.  As the price of oil dropped as demand reduced because people just couldn't afford to buy it, the green building industry shriveled up a little, withered a bit and almost disappeared.  But fortunately in the current decade, the focus on green building and sustainable living has made a comeback.
  3.  The home building industry coined the phrase “green building” in the late 1980’s, turning a small movement of energy efficient, resource sensitive homes into a quiet revolution-one that has become the preferred way to build and remodel.  Over the last decade, while consistently improving energy efficient building practices and introducing new technology and products each year, the building industry has been challenged with educating the public in the many aspects of the science of green building technology.
  4.  A Builder building green homes, uses a systematic approach to design, construction, and on-going operational durability in which the sum of the benefits are far greater than the individual components.  To sum up, green building, means incorporating environmental considerations and resource efficiency into every step of the land development and home building process to minimize impact on the environment.
  5.  The ‘Green Building’ concept is gaining importance in various countries.  These are buildings that ensure that waste is minimized at every stage during the construction and operation of the building, resulting in low costs, according to experts in the technology.
  6. Green buildings are designed to reduce the overall impact of the built environment on human health and the natural environment by:  Efficiently using energy, water, and other resources.  Protecting occupant health and improving employee productivity.  Reducing waste, pollution and environment degradation.
  7.  Reduce energy costs.  Improve air quality.  Improve the use of materials and resources used in the buildings production.  Water Efficiency.  Recycling wastes and re-using them.
  8.  Site Selection and Structure Design Efficiency.  Energy Efficiency.  Water Efficiency.  Materials Efficiency.  Indoor Environmental Quality Enhancement.  Operations and Maintenance Optimization.  Waste and Toxics Reduction.
  9.  They are energy efficient, hence use less energy.  They use natural forms of energy like geothermal, solar or wind technologies.  Less energy used translates into a smaller ‘carbon footprint’.  Recycled materials like reclaimed timber and bamboo wood floors are used.  Designing green buildings also take in to account landscaping which reduces the need of irrigation.
  10.  Green buildings also manage the construction process to make sure that any waterways remain unpolluted with construction by-products.  Green buildings also lend themselves to a better work environment.  They generally include the use of natural day light, big windows and good indoor air circulation, dramatically increase productivity and reduce absenteeism.
  11.  The Indian Green Building Council (IGBC), was formed in the year 2001 by Confederation of Indian Industry (CII).  The vision of the council is to usher in a green building movement in India and facilitate India to become one of the global leaders in green buildings.
  12.  It launched a Star Rating Programme in 2009, for office buildings in order to accelerate the Energy Efficiency activities in commercial buildings. The programme developed by BEE is based on actual performance of the building, in terms of specific energy usage (in kWh/sq m/year).  The BEE programme rates office buildings on a 1 to 5 star scale, with 5-Star labelled buildings being the most energy efficient.  This programme initially targets air conditioned and non-air conditioned office buildings in the following three climatic zones:  Warm and Humid  Composite  Hot and Dry  It will be subsequently extended to other climatic zones and building types.
  13.  CRISIL is fully committed to the environment. Perhaps the greatest symbol of this commitment is CRISIL House, CRISIL's headquarters in Mumbai, which holds the coveted LEED Platinum level certification.
  14.  Locally available materials and sustainable energy sources have been used extensively in the building.  Natural lighting and ventilation enhance the energy-efficiency of the building.  Adequate green spaces help in controlling the micro-climate providing visual delight at the same time.  CRISIL headquarters are located in Hiranandani Business Park, Powai in Mumbai.  CRISIL's initiatives can broadly be summarised under three heads:  Saving energy  Reducing pollution  Conserving scarce resources.
  15.  Saving Energy:-  Frugal use of artificial lighting:Around 75% of the daytime working light requirements in CRISIL House are met using natural light.  Energy efficient air conditioning:The design and usage of the air-conditioning system in CRISIL House conserves energy and minimizes electricity usage. The building is designed and built to minimize thermal leakage, both inward and outward.  Server virtualization: This initiative resulted in a net reduction in the number of servers in 2011 to 229 from 345, saving around 202,000 Kilowatt hours of electricity.
  16.  Reducing Pollution:-  Waste sorting for appropriate treatment: CRISIL limits the areas where food and drink can be consumed in CRISIL House. This allows food waste and paper waste to be separated. Liquid waste is treated in a dedicated Sewage Treatment Plant (STP), while about 1.5 tonnes of paper and paper products are recycled every month.  Avoiding transport of drinking water: CRISIL offices in Mumbai use Reverse Osmosis (RO) water purifiers, instead of buying treated bottled water, the commonest source of drinking water in Indian offices. A total of 160 kilolitres of water is treated in this way annually in CRISIL
  17.  Conservation of scarce resources:-  Paper saving: One of the most pervasive uses of paper is the paper cup – a company of CRISIL's size can save as much as 12 tonnes of paper in a year, besides on transport and disposal, by not using these cups. CRISIL has replaced paper cups with metal cups, which can be washed and re-used.  Water saving and recycling in CRISIL House: The use of dishwashers in CRISIL House saves upwards of 5 million liters of water in a year. The recycled water is routed to sanitary use, and is also used for watering CRISIL House's 17,000 square feet of green areas.
  18.  Renowned as one of the early adopters of the green building movement in India, the ITC Green Centre is still considered a benchmark for green buildings. It was the first 'Platinum' rated building in India and has endeavored to adopt green practices that go beyond recycled waste and day-lit offices. Within a built- in area of 170,000 sq.ft., the building features alternative transportation facilities, storm water management system, solar thermal technology, reflective high-albedo roof paint, minimal exterior lighting, separate smoking rooms with exhaust system and zero-water discharge. More than 10% of the building materials are refurbished from other sites and 40% are from within 500 miles of the project site
  19.  India’s first Greenfield airport is undeniably among the top 10 green buildings in India and the first airport in Asia to be awarded the LEED ‘Silver’ rating certification by US Green Building Council. Featuring 100,005 sq. m. of glass encased terminal, this green building ensures optimal use of natural light and minimal wastage of electricity or energy consumption. Yet another of its green features includes the recycling of treated wastewater for landscaping, air conditioning and flushing requirements. This Greenfield airport has been built at a cost of Rs 2,478 crore
  20.  The Tamil Nadu Legislative Assembly in Chennai which is being inaugurated on 13 March 2010 , has been designed and constructed based on green building principles. The building has been awarded the prestigious 'Gold' rating from Indian Green Building Council.
  21.  Energy efficient measures to conserve 15-20% of energy.  Water efficient fixtures to save water to the tune of 40-45%.  Roof gardens to reduce heat island effect.  On-site rain water harvesting system.  Reuse of 100% treated waste water for landscaping and flushing requirements.  Over 90% of the construction waste recycled and reused on the site.  Electric charging refueling stations in the parking lots.
  22.  The Shanghai Tower is a super tall skyscraper under construction in the Pudong district of Shanghai, China.  It is designed by Gensler, it will be the tallest of a group of three super tall buildings in Pudong.  Shanghai Tower is built based on the Green Building concept. The tower employs 43 green and energy- saving technologies to reduce energy usage by 21% and water consumption by 40%.
  23.  The building will recycle 235,000m³ (62.1 million gal) of water per year, and deploy an additional 20,000m³ (5.28 million gal) of grey and storm water.  The sustainable features of the tower will reduce the carbon footprint of the building by 34,000t per year.  Variable Air Volume air conditioning systems and brightness sensors will be installed in the building. The carbon monoxide (CO) sensors will activate the garage fans when CO levels reach unacceptable levels.  The vertically aligned wind turbines on the top levels will generate 1,189MWH of green electricity annually.
  24.  Even though green buildings cost 5-10% more to build than regular buildings, this cost can be recovered within 2 years by saving water and energy.  The green building movement & technology is here to stay for the benefit of individuals, society and the country at large.  It’s a step to optimum use of relevant energy sources.
  25.  Akshay Bhambri  Nimay Ashar  Ayush Asthana  Shankho Bag  Priyansh Bhanthia

Notas del editor

  1. No energy is needed to create them. They already exist.
  2. Credit Rating and Information Services of India Ltd. (CRISIL) is a leading Ratings, Research, Risk and Policy Advisory Company based in Mumbai. LEED- Leadership in Energy and Environmental Design….. Developed by the U.S. Green Building Council Platinum means 80+ points which is the highest rating
  3. Frugal means economical Server virtualization is a generalized term describing the ability to host multiple complete OS images on a single hardware platform