Green-building

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NAKUL KUMAR NAYAN

BARUN KUMAR


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"A green building is one which uses less water,

optimises energy efficiency, conserves natural
resources, generates less waste and provides
healthier spaces for occupants, as compared
to a conventional building.“
(Src: www.igbc.co.in)

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Green Rating for Integrated
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Habitat Assesment
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Minimize the demand on non-renewable resources
Maximize the utilization efficiency of these resources
Maximize the reuse, recycling, and utilization of
renewable resources
Maximizes the use of efficient building materials and
construction practices
Optimizes the use of on-site sources and sinks by
bioclimatic architectural practices
Uses minimum energy to power itself
Uses efficient equipment to meet its lighting, air
conditioning, and other needs
Uses efficient waste and water management
practices
Provides comfortable and hygienic indoor
working conditions

NAKUL KUMAR NAYAN

BARUN KUMAR


WHY GO GREEN??
CONSTRUCTION SECTOR
60
Percentage

50
40
30

20

10
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Series 1

Energy
Use

Water
Consum
ption

40

42

Raw
Air
Material
Consum Pollution
ption
50

NAKUL KUMAR NAYAN

50

Green

House
Gases

Water
Pollution

Solid
Waste

CFCs

50

42

50

48

BARUN KUMAR


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CO2 Emission
Trade

From February 2005, the Kyoto protocol applies. It is meant to reduce the levels
of global greenhouse gas emissions. The origin of this protocol can be traced
back to 1997. It stands for an international environmental treaty where the 39
participating industrial nations agreed, by 2012, to reduce their collective
emission of environmentally harmful gases, like, for instance, carbon dioxide
(CO2) by a total of 5% when compared to 1990 levels.

NAKUL KUMAR NAYAN

BARUN KUMAR


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In sum, the following aspects of a green building
design are looked into in an
integrated way.
• Site planning
• Building envelope design
• Building system design (HVAC [heating
ventilation and air conditioning], lighting,
electrical, and water heating)
• Integration of renewable energy sources to
generate energy on-site
• Water and waste management
• Selection of ecologically sustainable materials
(with high recycled content, rapidly
renewableresources with low emission
potential, and so on)
• Indoor environmental quality (maintain
indoor thermal and visual comfort and air
quality)

NAKUL KUMAR NAYAN

BARUN KUMAR


What is green building rating system?

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A green building rating system is an evaluation tool that measures environmental performance of
a building through its life cycle. It usually comprises of a set of criteria covering various parameters
related to design, construction and operation of a green building.

Some of the successful international rating programmes
Breeam
Building research establishment’senvironmental assessment method (BREEAM) - UK
Casbee
Comprehensive assessment system for building environmental efficiency (CASBEE) – JAPAN
Gbtool
International framework committee for the green building challenge,
An international project that has involved more than 25 countries since 1998.
Leed
Leadership in energy and environmental design (LEED) US
Hk–beam
Hong kong building environmental assessment method (HK-BEAM)
Dgnb
German sustainable building certificate (gesbc)
Green star

Austerlia
Minergie
Switzerland

NAKUL KUMAR NAYAN

BARUN KUMAR


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LEED (Leadership in Energy and Environmental Design) is a voluntary, consensus-based,
market-driven program that provides third-party verification of green buildings. From
individual buildings and homes, to entire neighborhoods and communities, LEED is
transforming the way built environments are designed, constructed, and operated.
Comprehensive and flexible, LEED addresses the entire lifecycle of a building.

Rating Systems for Green Buildings

Weightage
6%

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14%
13%

25%

9%
33%

NAKUL KUMAR NAYAN

BARUN KUMAR


GRIHA-Green Rating for Integrated
Habitat Assessment

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GRIHA was developed as an indigenous building rating system, particularly to address and
assess non-air conditioned or partially air conditioned buildings. GRIHA has been developed to rate
commercial, institutional and residential buildings in India emphasizing national environmental
concerns, regional climatic conditions, and indigenous solutions.

GRIHA stresses passive solar techniques for optimizing visual and thermal comfort indoors, and
encourages the use of refrigeration-based and energy-demanding air conditioning systems only in
cases of extreme thermal discomfort.
GRIHA integrates all relevant Indian codes and standards for buildings and acts as a tool to
facilitate implementation of the same.

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Provides guidelines, best practices, benchmarks/
indicators :
Conservation of for soil, energy, water, materials
Demand reduction
Enhanced efficiency level of water use, energy use
Use of renewable energy resources
Maximizing recycling and reuse of water and waste
Ensuring quality of water, and air (outdoor and
indoor)
Ensuring safety , health of construction workers
Quality of indoor environment
Controlling factors leading to climate change

NAKUL KUMAR NAYAN

Recommended Practices
• Proper orientation to take maximum advantage of the sun.
• Landscaping to alter wind direction and ambient
temperature
• Choice of building insulation/roof gardens/colours and
textures
• Properly sized and shaded windows
• Window placement to allow cross ventilation
• Placement of rooms (e.g. buffer spaces like toilets, staircases
on west)
• Detail roof innovatively to admit maximum daylight
• Use efficient lamps, fixtures and controls
• Use solar water heating system
• Use a hybrid of an earth air tunnel system and airconditioning to reduce loads

BARUN KUMAR


GRIHA-Green Rating for Integrated
Habitat Assessment
Set of 32 criteria
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100 point system with differential weightage on various

criteria
Operation and
maintenance
2%

Health
17%

Energy (System
Design)
21%

Waste
8%

Site
15%

Water
14%

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51 - 60
61 - 70
71 - 80

81- 90
91- 100

Energy (Passive
Design)
23%

NAKUL KUMAR NAYAN

BARUN KUMAR


CASE STUDY(GRIHA): RETREAT

RETREAT, a residential training facility for executives, is
designed to be self-sufficient, and independent of any
external power supply. It consists of two semicircular
blocks arranged one behind the other. The south block
comprises the living quarters with 24 single-occupancy
rooms and 6 suites and the north block comprises the
conference centre with a large hall, a dining room, a
lounge, recreational facilities, and a library.

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SILENT FEATURES
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NAKUL KUMAR NAYAN

Saves 40%-50% of energy costs with an additional
investment of about 25%.
Twenty-four solar water-heating panels
Photovoltaic panels the main source of power at
night.
Gasifier the source of power for the building
during the day.
Effective insulation
Shade provided by trees

Underground earth air tunnels
Chillers for dehumidification and additional
cooling during the monsoon.
Specially designed skylights,
Energy-efficient lights, and
A bed of reed plants (phragmytes)
The estimated co2 saving is about 570 tonnes/year.

BARUN KUMAR


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NAKUL KUMAR NAYAN

BARUN KUMAR


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NAKUL KUMAR NAYAN

BARUN KUMAR

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NAKUL KUMAR NAYAN

BARUN KUMAR


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NAKUL KUMAR NAYAN

BARUN KUMAR


Building HVAC system

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NAKUL KUMAR NAYAN

BARUN KUMAR


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NAKUL KUMAR NAYAN

BARUN KUMAR


Site And Building Envelope

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NAKUL KUMAR NAYAN

BARUN KUMAR


Site And Building Envelope

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NAKUL KUMAR NAYAN

BARUN KUMAR


Passive Architecture

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Insulation

Wind tower
NAKUL KUMAR NAYAN

Down draft Evaporative Cooling
BARUN KUMAR

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Roofing

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Trombe Wall
NAKUL KUMAR NAYAN

Roof Garden

Pergolas
BARUN KUMAR


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Light Shelf

Solar Chimney

NAKUL KUMAR NAYAN

Roof Pond

Earth Air Tunnel
BARUN KUMAR


Renewable Energy Source

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Photovoltaic Cells

Biofuels

Wind Power

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Solar Water Heater

Geothermal Heat-pump

NAKUL KUMAR NAYAN

Geothermal Electricity

BARUN KUMAR


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Rain Water Harvesting

Sensors

Energy efficient lighting

Reed Bed (Waste
water recycling)

NAKUL KUMAR NAYAN

Water efficient fixtature

BARUN KUMAR