Presentation Griha

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PRESENTED BY: Anu Kafle (66003) Kamana Gurung (66016) Lelina Singh (66020) Samjhana Simkhada (66039) Timila Dangol (66051)

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GREEN BUILDING

 _{A practice of creating structures and using processes that are}

environmentally responsible and resource efficient.

 _{Throughout a building’s life-cycle from sitting to design , construction ,}

operation , maintenance , renovation and deconstruction.

 _{Provide comfortable living and working conditions to its occupants while}

minimizing its detrimental impact on the environment.

OBJECTIVE:

Helps to reduce building-related environmental impacts while creating places that are healthier and more satisfying for people.

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Energy efficient construction

techniques

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GRIHA

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Green Rating for Integrated Habitat Assessment.

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Griha conceived by TERI and developed jointly by

Ministry of New and Renewable Energy(MNRE),

Government of India.

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Silent Points

 GRIHA has been developed for the different agro-climatic Zones of India.  Developed particularly for non-ac spaces or partially AC building.

 Evaluators are experts from different fields connected to the buildings and

are from specific region where the building is situated

 Stresses on optimization of visual and thermal indoor comfort.

 Integrates all relevant Indian Codes and Standards to act as tools for

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Emphasis

 _{Minimize -}

-resource consumption -waste generation

-overall ecological impact

 _{By Five R philosophy-} -Refuse -Reduce -Reuse -Recycle -Reinvent.

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Why should you get your building rates?

Reduced energy consumption without sacrificing the comfort levels (lower

operational costs)

Reduced water consumption

Reduced system sizes (HVAC, transformers, cabling, etc.) for optimal

performance at local conditions.

Reduced investment (Lifecycle costs)

Reduced destruction of natural areas, habitats, and biodiversity, and

reduced soil loss from erosion etc.

Reduced air and water pollution (with direct health benefits) Limited waste generation due to recycling and reuse

Reduced pollution loads

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There are 34 criteria of the GRIHA rating system under four main categories:

• _{Selection and site planning}

Conservation and efficient utilization of resources

• _{Building Planning and Construction Stage:}

To maximize resource(water, energy and materials) conservation and enhance efficiency of the system and operations

• _{Building operation and maintenance}

Validate and maintain green performance levels/adopt and propagate green practices and concepts

• _Innovation

Eight are mandatory, four are partly mandatory, while the rest are optional.

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THE RATING SYSTEM

NO CRITERIA PTS

1 Site selection 1 Partly mandatory

2 Preserve and protect the landscape during construction/compensatory depository forestation

5 Partly mandatory

3 Soil conservation (till post-construction) 4

4 Design to include existing site features 2 Mandatory

5 Reduce hard paving 2 Partly mandatory 6 Enhance outdoor lighting system efficiency 3

7 Plan utilizes efficiently and optimize on-site circulation efficiency

3 8 Provide ,at least, minimum level of

sanitation/safety facilities for construction workers

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THE RATING SYSTEM

NO. CRITERIA PTS

9 Reduce air pollution during construction 2 Mandatory 10 Reduce landscape water requirement 3

11 Reduce building water use 2 12 Efficient water use during construction 1 13 Optimize building design to reduce conventional

energy demand

6 Mandatory 14 Optimize energy performance of building within

specified comfort

12 15 Utilization of fly ash in building structure 6

16 Reduce volume, weight and time of construction by adopting efficient technology (e.g pre-cast systems, ready-mix concrete, etc.)

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18 Renewable energy utilization 5 Partly

mandatory 19 Renewable energy based hot water system 3

20 Waste water treatment 2

21 Water re-cycle and re-use (including rainwater) 5 22 Reduction in waste during construction 2 23 Efficient waste segregation 2 24 Storage and disposal of waste 2 25 Resource recovery from waste 2 26 Use of low VOC paints/ adhesives/ sealants. 4

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28 Ensure water quality 2 Mandatory 2 Mandatory 29 Acceptable outdoor and indoor noise levels 2

30 Tobacco and smoke control 1 31 Universal Accessibility 1

32 Energy audit and validation Mandatory 0 Mandatory 33 Operations and Maintenance protocol for

electrical and mechanical equipment

2 Mandatory

# Total score 100

34 Innovation points (over the above 100 points) 4

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Centre for Environmental Science &

Engineering building (CESE)

at IIT, Kanpur

General Information

Project: Centre for Environmental Science and Engineering

Location IIT Kanpur

Climate Composite

Built-up Area 4240 m2 Air-conditioned area 1912 m2

Energy consumption reduction 41% per year

Water consumption reduction 70% below GRIHA’s benchmarks GRIHA RATING ***** (5 stars)

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First 5 star rated GRIHA building in IIT Kanpur

Trees preserved and protected

Outdoor solar lights

N-S Orientation with shading (roof/window)

Lesser paving

Solar PV and Solar Thermal systems

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Green Building Design Features:

•The width of the

floor plate is reduced for the same amount of floor plate area thereby allowing natural light to penetrate deep into the interior spaces

•It ensures that part of the façade is always shaded

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Several best practice guidelines were adopted like demarcation of site for construction:

Centre for Environmental Science and Engineering Building at IIT, Kanpur has been taken as an example to illustrate how the building attempted various GRIHA criteria to make it into a green building.

Sustainable site planning

•Installation dust screen around the disturbed area to prevent air pollution and spillage to undisturbed site area

Air pollution control

•Top soil was excavated, stored and preserved outside the disturbed

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Sustainable site planning

•Several trees on site were protected

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Sustainable site planning

•Adequate health and safety measures related to construction •More than 50% of the

paving is shaded by trees

•Irrigation water demand has been reduced by more than 50% in

comparison to GRIHA Benchmark

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There are two ways of conserving water during post construction and after the building is occupied reduction:

Water conservation

•In landscape water demand by more than 50% was achieved by use of minimum grass/lawn area

•Low flow plumbing fixtures are used in the building resulting in reduced water consumption from GRIHA’s benchmark in this building by 62%

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Maximum points weight age in GRIHA is given for energy conservation.

The criteria and commitment for energy conservation could be divided into three parts:

Conservation and efficient utilization of resource: energy

a. Energy: end use

b. Energy: embodied and construction c. Energy: Renewable energy utilization

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 Reduce cooling load in the air conditioned spaces and to in the non air conditioned areas

 Efficient window design by selecting efficient glazing,

inside all the laboratory spaces of the building

 Roof shaded by bamboo trellis and green cover from the roof

through integration of skylights and ventilators selected that complies with the efficiency recommended by the Energy Conservation Building code

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a. Energy: End Use

 Variable Frequency Drive installed in the Air Handling Units  Low energy strategies such

to cool the condenser

 Water loop, integration of thermal energy storage and enabled reduction in chiller capacity

 Integration of energy efficient lighting design that complies to the recommendations of ECBC.

with artificial lighting.

 Optimized architectural design and integration of energy efficient fixtures has resulted in the reduction in annual energy consumption by 41% from GRIHA’s benchmark

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1. Portland Pozzolona Cement (PPC) with fly-ash content is used in plaster and masonry mortar.

2. Wood for doors is procured from commercially managed forests. Modular furniture made room particle board is used for interiors.

Energy: embodied and construction

Energy: renewable energy utilization

1. Renewable energy from photovoltaic panels provide annual energy requirements equivalent to 30% of internal lighting connected load.

2. Hot water demand is met by solar hot water system.

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•· The building is fully complaint with the ECBC (Energy Conservation Building Code).

•· Sustainable site planning has been integrated to maintain favorable micro climate.

•· The architectural design has been optimized as per climate and sun path analysis.

•· Energy efficient artificial lighting design and daylight integration.

•· Energy efficient air conditioning design with controls integrated to reduce annual energy consumption.

•· Passive strategies such as an earth air tunnel incorporated in the HVAC design to reduce the cooling load

The building has completed its evaluation process and has achieved FIVE STAR TERI GRIHA rating. The evaluation committee has awarded a final score of

93/100 to the building

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CASE STUDY- Suzlon One Earth

Introduction

•_{Climate: hot semi-arid and tropical wet}

and dry climate

• _{Has been awarded with “Best Green}

Building Gold award at MIPIM Asia 2011”

City Pune, India

Owner: Suzlon Energy Ltd.

Type Office Block with a Corporate Learning Center(College) Site area 45392 sq.m

Principal architect Christopher Charles Benninger Architects

Objective To showcase as building project with minimal impact on the environment

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About Design

• Built on a concept of Global Village

• Purpose is to provide protection from climate hence is climate responsive

• Building envelope been designed taking into account the climate of Pune, Maharashtra and India

• Buildings are low rise, direction oriented, have double glazed glass to provide sufficient light into building but not heat

Only Building in India with both LEED Platinum and GRIHA Five Star certified campus. India’s first campus 100% on renewable energy

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Driving Factors

Sustainability

• Principles of sustainability form site selection, design, engineering, construction, material and operations

• Energy • Water • Waste • Material

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Green Building Design Features

• _{Passive design strategies for visual}

and thermal comfort with minimum interventions of technologies

• _{Orientation of the blocks face N, S,}

N-W, S-E for adequate day lighting and glare control

• _{Use of louvers for shading}

• _{Office Block partly self-shaded to}

create interesting office atmosphere, break-out spaces as small terraces are scattered all over the office block

• _{To minimize disturbance on site, to}

ensure easy maintenance, various utility corridors have been provided coupled with the roads and pathways on site.

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Green Building Design Features

• _{Use of high efficiency mechanical}

systems significantly reduce energy consumption of the building

• _{Equipped with LED lights governed}

by motion sensors i.e. turn on only when people are seated on their seats reduces lighting load to 0.8 W/sq.ft.

• _{HVAC system like pre-cooling of}

fresh air heat recovery/exchanger mechanisms to minimize energy consumption in HVAC

• _Managed _to _reduce _energy

consumption by 47% below the GRIHA criterion 14 benchmark figures

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Green Building Design Features

• _{Adopt standards for energy and water management which is}

reflected in their projected energy and water savings

• _{Use of renewable energy systems as solar PV, windmills}

• _{Reduce water consumption by use of low flow fixtures (65% less}

water than conventional buildings for sanitary purposes)

• _{Reduce landscape water requirement by 50%}

• _{Over 55% of water is recycled and reused within the complex} • _{Use of low-energy materials, recycled content}

• _{Minimize environmental impact with contemporary feel to the}

buildings and spaces, thereby proving the point that green buildings can be as aesthetically pleasing as any conventional building and yet are able to have minimal negative impact on environment.

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Using recycled water Reduced water

consumption

Use of native plants Creating new Habitats

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COMPARISON

BETWEEN

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Leed india Griha

led by the Indian Green Building Council (IGBC)

conceived by TERI and developed jointly with the Ministry of New

and Renewable Energy, Government of India.

Rating is primarily based on per capita energy consumption

Is an easy, yet comprehensive rating system designed for India

“Too American" as the united states green building council (USGBC)

GRIHA on the other hand is made in India, for India

LEED offers fewer points for water conservation

GRIHA takes a major part of its classification system from LEED building commissioning is a

mandatory requirement ,not a common practice in India

Material and resource sustainability criteria are poorly

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Leed india Griha

Classification

1. Sustainable sites 2. Water Efficiency

3. Energy and Atmosphere 4. Materials and Resources

5. Indoor Environmental Quality 6. Innovation& Design process

1. Site Planning

2. Health and well being during construction 3. Conservation and efficient utilization of resources

4. Recycle, reuse, and recharge of water 5. Health and well-being

6. Operation and maintenance 7. Innovation points

Certification is provided as per the scores obtained as follows Score rating 26 - 32 certified 33 – 38 silver 38 – 51 gold 51 – 69 platinum Score Rating 50-60 one star 61-70 two star 71-80 three star 81-90 four star 91-100 five star

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Conclusion

Green is not just about energy consumption…

Green buildings are not just more energy efficient than their

conventional counterparts, they also create healthier work, learning and living environments, with more natural light, natural ventilation and

cleaner air, and contribute to improved employee and student health, comfort, and productivity.

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Bibliography www.grihaindia.org/ en.wikipedia.org/wiki/Indian_Institute_of_Technology_Kanpur www.asci.org.in/eeibe/Resources/Presentations/Mr.%20Siva%20Kish an.pdf www.grihaindia.org/files/Manual_VolI.pdf www.teriin.org/upfiles/projects/ES/2005BS28_20081216112849.pdf

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