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LEED India + Case Study : CII Sohrabji Godrej, ITC Green Center
Leadership in Energy
Effective in India from 1st Jan 2007
Version of the LEED rating system
administered by IGBC.
Green Building Rating System
• Framework for assessing building performance against set criteria and
standard points of references
Internationally accepted benchmark for design, construction and operation of
Encourages and accelerates global adoption of sustainable green building and
development practices .
65 LEED certified green buildings in India.
Based on professional reference standards like NBC, ASHRAE, and ECBC etc.
Uses less energy, water, natural resources
Generates less waste
Healthier for people living in it
Energy saved= 30-40% per day
Enhanced indoor air quality, light and ventilation
Potable water saving upto 20-30%
High productivity of occupants
Minimum generation of non-degradable waste
Lower operating costs and increase asset value
• Sustainable Architecture and Design
• Site Selection and Planning
• Water Conservation
• Energy Efficiency
• Building Materials and Resources
• Indoor Environmental Quality
• Innovation and Development
Required elements or green building strategies that must be included in any
LEED certified project
Optional elements, or strategies that projects can elect to pursue to gain
points toward LEED certification.
Independent third party verification that the building project meets highest
Benefits of certification – WHY LEED?
lead to the transformation of the built environment
built as designed and perform as expected.
have lower operating costs and increased asset value
healthy and comfortable for their occupants
reduce waste sent to landfills
conserve energy and water
reduce harmful greenhouse gas emissions
Green homes rating
Green factory rating
LEED India for New Construction
Design of commercial buildings-hotels, institutions, services
Under the direct control of the owner or developer
LEED India for Core and Shell
Design of core and shell buildings-leased or rented spaces
Not completely under the direct control of the owner or developer
LEED Points overview
Important criterions and Point allocation
Criterions Points Points
1 Sustainable Architecture and Design 5
2 Site Selection and Planning 14
3 Water Conservation 18
4 Energy Efficiency 28
5 Building Materials and Resources 16
6 Indoor Environmental Quality 12
7 Innovation and Development 7
Outlines various “green” opportunities for reducing the negative impact the
building has on the environment.
The opportunities range from
Preventing erosion of top soil,
:Preventing water contamination & creation of heat islands,
Effective use of a barren or waste lands etc.
THE BASIC PRINCIPLE
TIME and NATURE have changed land
Use what nature has given by working with existing topography, plants and
Touch the earth lightly, rather than cutting deep and covering it with
Prerequisite : Erosion and Sedimentation control
Control erosion and sedimentation of soil to reduce negative impact on
A) Water quality
B) Air quality – dust generation
Erosion from construction sites
A) Can carry toxicants & nutrients
B) Polluting storm water run –off
Design to a site sedimentation and erosion control plan that conforms to
the best management practices. (Should address both during construction &
Advocates process like temporary or Permanent vegetation, Mulching,
earth dikes, silt fencing etc.
Water efficiency can be defined as :
the accomplishment of a function, task, process, or result with the minimal amount
of water feasible.
An indicator of the relationship between the amount of water required for a
particular purpose and the amount of water used or delivered.
Water efficiency differs from water conservation in that it focuses on reducing
The key for efficiency is reducing waste not restricting use.
It also emphasizes the influence consumers can have in water efficiency by
making small behavioral changes to reduce water wastage and by choosing more
water efficient products.
Examples of water efficient steps include simple measures like, fixing leaking
ENERGY AND ATMOSPHERE
LEED recognizes the importance of optimizing energy performance by
allocating the greatest number of potential points within this category to
formulate a sustainable design
In general points can be earned through:
use of renewable energy,
deliberate mechanical and electrical system selection
proper commissioning and monitoring of devices
MATERIAL AND RESOURCES
40% of the carbon dioxide that contributes to our warming planet comes from
Some of it is a secondary effect of operational needs such as electricity, a/c, and
heating, many ghg’s arise from resource extraction, manufacturing and production
of the building materials themselves.
Choosing ingredients wisely makes all the difference in terms of the overall impact
of the building throughout its life. -‘Environmental footprint’ or ‘life cycle
The materials are in the picture from the first round of planning to the final stages
of demolition or renovation of a building or product.
Credit: Resource Reuse
Reuse building materials and products in order to reduce demand for
virgin material and reduce waste, thereby reducing impacts associated
with the extraction and processing of virgin resources.
Use salvaged or refurbished materials for 5-10% of building materials
Methods suggested like, reuse of partition panels,broken tiles,Used
carpets.(Note : Movable furniture like chairs are not accounted for
Credit: Recycled content
Increase demand for building products that incorporated recycled content
materials, therefore reducing impacts resulting from extraction and
processing of new virgin materials
Use materials with recycled content such that the sum of post –consumer
recycled content plus one-half of the post-industrial constitutes at least
5% of the total value of the materials in the project.
The value of the recycled content portion of a material or furnishing shall
be determined by dividing the weight of recycled content in the item by
the total weight of all material in the item, then multiplying the resulting
percentage by the total value of the item.
Credit local/ regional Materials
Increase demand for building materials and products that are extracted
and manufactured within the region, thereby supporting the regional
economy and reducing environmental impact resulting from transportation
Use a minimum of 20 %( extra points for going up to to 50 %) of building
materials and products that are manufactured regionally within a radius of
800 kms (manufacturing refers to the final assembly of components)
Credit : Rapidly Renewable Material
Reduce the use and depletion of finite raw and long cycle renewable
materials by replacing them with rapidly renewable materials
Use rapidly renewable building materials and products (made from plants
that are typically harvested within a ten-year cycle or shorter)
for 5% of the total value of all building materials and products used in the
Consider use of materials such as bamboo, wool, cotton insulation,
agrifiber, linoleum, wheat board, strawboard and cork.
Indoor Environmental Quality
Green building means considering environmental impact of materials and
construction, along with the physical and psychological health of the
Indoor Environmental Quality (IEQ) addresses the subtle issues that
influence, how we feel in a space.
It is a fundamental human right to live and work in spaces with healthy
Credit : Low Emitting Materials
Reduce the quantity of indoor air contaminants that are odorous or
potentially irritating and harmful to the comfort and well being of installer
and building occupants.
All adhesives and sealants used on the interior of the building shall
comply with the requirements of the reference standard.
VOC (Volatile Organic Compound) content of adhesive and sealants to
Carpet systems must meet the requirements of the carpet and rug
institute Green label indoor Air quality test program
Composite wood and agrifiber products used on the interior of the
building must contain no added urea – formaldehyde resins
FACTORS CONTRIBUTING TO
Green Design Strategy
Green Process for manufacturing
Product Carbon Footprint tracking
Furniture in getting credits
GREEN DESIGN STRATEGY
Optimized utilization of raw material to conserve natural resources
Maximize recycled content
Reduction in product volume to reduce transportation cost
Use of rapidly renewable wood & wood substitutes (planted & replenished
in less than 15 years cycle) to reduce impact on eco system.
Modular products make various options with the use of minimum basic
Possibility of refurbishing for reuse (Ease of servicing – assembly and
Design for durability – adherence to performance standards to enhance
GREEN PROCESS FOR
Confirming to ISO 14001
Use of natural lighting in the plant
30 % increase in production over last year with the same consumption of
Converted to CNG for all high fuel consuming processes
Recycling of water with reverse osmosis plant
Effective utilization of in-process waste water, after effluent treatment is
used for watering gardens
Influencing our vendors to follow green processes
Sale of hazardous waste only to ‘Pollution Control Board’ authorized parties
96% usage of powder in powder coating process leads to minimal wastage
Hidden components are coated with left over powder mix
CARBON FOOTPRINT TRACKING
A product’s life cycle consists of the activities that go into making,
transporting, using and disposing of that product
FURNITURE IN GETTING
Provision of energy efficient task lights, can help in reducing the overall
lighting load of the project.
Use of easily recyclable material (like corrugated cardboard, expanded
polystyrene) packing which can reduce landfill disposal.
Manufacture products with longer life cycle, so that can be used in many
sites. Tile – frame construction making it easy for reconfiguration and reuse
Identifying components which could be made from recycled materials like,
recycled plastics, worktop made of baggage boards etc.
Task lighting feature can ensure better control and proper optimization of
electricity Used for lighting
Can explore the option of using boards made of bamboo, fabrics made of
agricultural waste etc.
Working towards usage of material which confirm to VOC level
LIFE CYCLE ASSESSMENT
EXAMPLE: Spacio open plan office system
80 % steel for the paneling compared to conventional wood based partition
Fabrics : 100% Cotton or PP based without any blend
100 % use of reconstituted wood: (PPB or MDF) for work surfaces
Number of parts reduced to minimum
Easy to disassemble reconfigure and refurbish for reuse
Paper based packing material: 100 % Recyclable
EXAMPLES OF LEED BUILDINGS
Platinum rated : CII –Godrej GBC ,Hyderabad
ITC Green Center, Gurgaon
Wipro Technologies, Gurgaon
Gold Rated : IGP Office, Gulbarga
NEG Micon, Chennai
Grundfos Pumps, Chennai
Silver Rated : L&T EDRC , Chennai
CII –Godrej GBC
ITC Green Center,
L&T EDRC ,
Chennai Rajiv Gandhi International
Airport – Hyderabad
It remains fairly warm most of the year.
Receive less rainfall in the monsoon.
Temperatures come down in the months of
December and January and the nights
become quite cool in and around the
During the summer months, the mercury
goes as high as 42° C while in winters the
minimum temperature may come down to
as low as 12° C.
Humidity in the morning is very
high exceeding 80 per cent from
July to September. In the dry
months of March, April and May,
humidity is generally low with an
average of 25 to 30 per cent and
decreases to 20 per cent at
During the summer months,
temperature goes as high as 42° C
while in winters the minimum
temperature may come down to as
low as 12° C.
Sohrabji Godrej Green
Business Centre in
Hyderabad. It’s a
commercial building which
consists of office
buildings, research labs
and conference rooms
GREEN BUSINESS CENTER
Materials & Resources
Indoor Environmental Quality
Formation of positive and negative pressure zones when wind flows around
rectangular and circular bodies.
The pressure coefficient cp can be used with the wind velocity to calculate
positive and negative pressure loads.
Green Building Tour
Roof garden - Protects heat
down heat-island effect
High performance glazing to bring in
light while minimizing heat ingress.
Usage of light glazing and vision
Jali (Perforated) wall for bringing in
natural light as well as ventilation .
Energy saving system.
The courtyards act as "light wells,"
illuminating adjacent work areas.
When this light is not sufficient,
sensors trigger the deployment of
efficient electric lights. Dimmers
automatically control the
illumination levels, turning the
lights off when they're
unnecessary. Also, occupancy
sensors prevent a light from being
switched on at an unoccupied
Absorbing heat and radiating it
into the building. This is
minimized through the roof
gardens covering 55% of the
Rain water harvesting.
Seepage into the ground have
been installed in
pedestrian areas and parking.
Rain water absorbed used for different purposes
Slope given for
the water flow
Natural light deflection systems
can direct light deep into the room and
ensure better natural lighting provisions.
Reflective glass (mirror)
This material will most significantly reduce penetration of
radiation from the reflecting side to the non-reflecting side
(penetration of 11-37% of total striking radiation).
Such glazing is used in this building where it is desirable to
maintain eye contact with the outside as well as to prevent
penetration of radiation and in areas where it is hot most days of
Usage of Light Glazing and Vision
The double glazed glass will just
allow the diffused sunlight to pass
through and will radiate the solar
radiation back. It is located in the
western direction because the suns
rays is highly radiant when it is
Double glazed glass
This consists of two sheets of glass with space in
between, sometimes filled with air or other gases, or
Variations in thickness have a certain effect, up to a
certain limit, on the percentage of radiation allowed to
penetrate and on thermal conductance of the composition.
The main advantage of this type of cross-section is its
ability to reduce heat transfer from one pane to the other,
both by conduction and by radiation.
Use of Traditional Jalli
Jallis or Lattice walls
are used to prevent
glare and heat gain
adequate day lighting
and views. The jalli,
used in many historic
buildings such as the
Taj Mahal, gives
definition and an
aesthetic appeal to a
Jalli [Perforated] for
bringing in Natural Light
and also Ventilation
Function of Jali in the rains.
Section through the jali
Harvesting of solar energy - 20%
of the buildings
energy requirement is catered to
The Solar PV has an installed
capacity of 23.5 KW
Average generation is 100-125
units per day
The solar panels are placed on the
eastern side and they are sloping
which helps production of energy
throughout the day and as it is a
commercial building more amount of
energy is consumed during the
working hours [day] compared to the
Wind tower with evaporative cooling
A combination of sensible cooling
in the ground and evaporative
cooling with the flow of air induced
by the wind tower can be achieved
by a configuration as shown. The
heat loss from air results in a
decreased air temperature, but no
change in the water vapour content
of the air.
Daytime and night time operation of a Wind Tower
The hot ambient air enters the
tower through the openings in the
tower and is cooled, when it
comes in contact with the cool
tower and thus becomes heavier
and sinks down. When an inlet is
provided to the rooms with an
outlet on the other side, there is a
draft of cool air. After a whole of
heat exchange, the wind towers
become warm in the evening.
During night the reverse happens;
due to warm surface of wind tower
and drop in temperature of ambient
air due to buoyancy effect, warm air
rises upwards. As a result, cooler
ambient air is sucked into the room
through the window. As a bye-product
of this process, wind tower
loses the heat that was collected
during the day time and it becomes
ready for use in cold condition up to
Wind tower design with openings on all four sides Wind tower design with evaporatively cooled system
Due to the unpredictable wind direction, opening on all four sides are provided with an additional
affect due to wind pressure. The rate of heat transfer mainly depends on surface area with which,
the air comes in contact. Here the surface area is increased by having vertical conduits, which
gives less resistance to air flow. Further, the effectiveness is increased by having sprinklers to
promote the evaporative cooling
Interior partitions are provided in
the building for various purposes of
privacy, which may not allow
openings in the partition. In this
region, due to the warm and humid
climate ventilation becomes very
essential, cross – ventilation
becomes the major solution. This
can be overcome by providing
ridge ventilation or ventilating
ducts or shafts for deeper rooms.
The effect of positioning the apertures at various heights above the floor
influences the efficiency of the natural ventilation in a given space.
Inlet higher than outlet. Good
interaction of air layers. Current
at body level. Pocket of warm ,
still air over the outlet.
Inlet and outlet are high.
Airflow only near ceiling. No air
current at body level. Good for
removing hot air for warm
season. Layers of still air at low
Collect rainwater for external use i.e. garden/washing car.
Use water conserving appliances including toilets, shower, taps, washing machine and dish
washer e.g.. Low flow faucets, water saving dual flush tanks
Reduce irrigation and surface water run-off .
Root Way Water treatment facility – Natural Way of
treating the black and grey water.
Zero water discharge building
System35% reduction in potable water use
Low flow water fixtures
Use of storm water & recycled water for irrigation.
Entire waste water in the building is treated biologically through a process
called the 'Root Zone Treatment
Slope given for the
Inlet for water
•A large amount of energy — and pollution — was also reduced
through choices in the production and transportation of building
•An impressive 77 percent of the building materials use
recycled content in the form of fly ash, broken glass, broken
tiles, recycled paper, recycled aluminum, cinder from industrial
furnaces, bagasse (an agricultural waste from sugar cane),
mineral fibers, cellulose fibers, and quarry dust.
•The building reuses a significant amount of material salvaged
from other construction sites like toilet doors, interlocking
pavement blocks, stone slabs, scrap steel, scrap glazed tiles,
shuttering material and, interestingly, the furniture in the
cafeteria. A waste management plan ensured that 96 percent of
construction waste was recycled.
Select materials using recycled components .
Design for re-use and recycling.
Control and reduce waste and packaging.
Reduce resource consumption.
Health and Wellbeing
Meet the basic physical, emotional and spiritual needs of the occupants
Consider healthy lighting, color and sound, controlled temperature and humidity and
good indoor air quality to enhance the living environment
Reduce formaldehyde emissions and use pollution fighting indoor plants
Apply an integrated wiring system for lighting, power, security, fire alarm and audio
Design a safe and user-friendly space.
maximum day light.
Avoiding Green wall and Green
Use of neutral glass to reduce
Usage of energy efficient white
Use of Zero CFG refrigerators
in refrigerators and air-condition.
Online monitoring system to
monitor the energy
Establishing baseline data for
Use of eco friendly electric car for
transport and traveling within the
helping in preventing pollution.
The building boasts of lighting energy savings of 88 percent compared to an
electrically lit building of the same size.
Vegetation that was lost to the built area was replaced by gardens on 55
percent of the roof area.
The building achieves a 35 percent reduction of municipally supplied potable
water, in part through the use of low-flush toilets and waterless urinals.
Thirty percent of users have shifted to alternative modes of transportation:
carpools, bicycles, and cars that run on liquefied petroleum gas, a low-polluting
alternative to conventional gasoline and diesel.
95 percent of the raw material was extracted or harvested locally.
An impressive 77 percent of the building materials use recycled content.
A waste management plan ensured that 96 percent of construction waste
Location:Sector 33, Gurgaon,
a LEED PLATINUM certified
building with 56 points
At 170,000 sq feet, ITC Green
Centre is the world’s largest 0%
water discharge, noncommercial
Green building, and compared to
similar buildings, ITC Green Centre
has a 30% smaller carbon footprint
with the use of sensible
One of the strongest aspects of ITC
Green Centre is its design. All
systems are integrated in a way so
that they can function as naturally as
The L-shaped plan of the building
serves more than one function in
more than one area of the
The central atrium allows a column of
natural light to form in the heart of the
building, thereby reducing the use of
It also ensures that one part of the
façade is always in the shade,
preventing too much heat from entering
The cooling effect is supported
moreover by the discreet bodies of
water placed in front of the building
The atrium also connects the various
parts of the building to each other, both
horizontally and vertically,it encourages
interaction between the various parts,
and more, it promotes a sense of
Harvest 100% of the rain that falls on
the building, and recycle 100% of all
the water used in the building
including waste water.
Use of waterless urinals in the
building. The urinals use biological
blocks containing particular bacteria
that reduce odour problems and
blockages in the urinals that saves 3
lakhs litres of water per annum.
Annually, storm water pits recharged
ground water by around 5500
kilolitres, and sewage treatment
plant recycled 6900 kilolitres of water
in total, limiting costs but more
importantly water use tremendously.
Interlocking tiles placed
across the landscape of the
building to harvest
rain water through the
grass that grows between
the tiles while ensuring 0%
ENERGY AND ATMOSPHERE
The high albedo roof coating reduces the amount of heat absorbed by
reflecting over 90% of visible and infra red radiations away from the
building. reduces the roof surface temperature by 30 degrees.
250mm thickness of the building’s walls, the double glazed windows
and high performance glass reduce the amount of solar heat entering
the building by more than 65%.
A commercial building the size of ITC Green Centre usually consumes
about 620,000 kilowatts per hour per annum, whereas ITC use 130,000
kilowatts per hour per annum.
With a consumption of 11.4lakhs kilowatts per hour against an
estimated 2.33 lakhs kilowatts per hour ITC saved 51% of their total
budget: 81% on lighting, 40% on Heating, Ventilation and Air
Conditioning (HVAC) and 40% on hot water annually.
MATERIALS AND RESOURCE
Over 40% of the materials used in the construction of ITC Green
Centre was available within 800 kilometres of the building site, which
is not only cost effective but also offers the chance of easy renewal
More than 10% of materials used to make work-stations, cabinets,
conference tables, wall panels and door frames was refurbished or
salvaged from other building sites.
Over 10% of our construction material, such as glass, ceramic tiles,
steel and aluminium, used in the building are recycled.
There are storage bins on every floor of ITC Green Centre for
recyclable materials like paper, cardboard, glass, plastic and metals,
affirming commitment to ‘reduce, reuse and recycle’ and making it a
point of everyday practice.
ITC is the world’s largest ‘Water Positive’ corporation. The amount of
rainwater harvest regularly exceeds the total amount of water consumed
by the company’s units.
The ‘zero discharge’ objective helps reduce fresh water intake.
It minimises energy consumption, brings down indirect CO2 emissions and
eliminates effluent pollution.