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Presentation by Dr. N. Sai Bhaskar Reddy -Sri. K. V. Subba Rao memorial lecture, one of the founders of M.V.S.R. Engineering CollegeHyderabad
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CLIMATE CHANGE & GREEN BUILDINGSUnderstanding traditional buildings
Dr. N. Sai Bhaskar Reddy, GEO http://www.e-geo.org
M.V.S.R. Engineering College3 September 2010
Bone
Brick pieces
Pottaryshards
Biochar /Charcoal
Slag
Quartz
Soil
Pottaryshards
Slag
Shell
LIME MORTAR
TRAD
ITIO
NAL
HO
USE
INDIAN VERNACULAR ARCHITECTURE
Is the informal, functional architecture of structures, often in rural areas, of India, built of local materials and designed to meet the needs of the local people. The builders of these structures are unschooled in formal architectural design and their work reflects the rich diversity of India's climate, locally available building materials, and the intricate variations in local social customs and craftsmanship. It has been estimated that worldwide close to 90% of all building is vernacular, meaning that it is for daily use for ordinary, local people and built by local craftsmen.http://en.wikipedia.org/wiki/Indian_vernacular_architecture
Introduction
All these efforts are straining the limits of the Earth’s “carrying capacity”— its ability to provide the resources required to sustain life while retaining the capacity to regenerate and remain viable.
•incalculable technological achievements •population growth •corresponding increases in resource use
Since the Industrial
Revolution the world has witnessed
pollutionlandfills, toxic wasteglobal
warmingResourcedepletion
ozone depletion,deforestati
on
SIDE EFFECTS ARE
Contributing to GHGs
Buildings are by far the greatest producers of harmful gases such as CO2 and this 'eco-footprint' would increase with the large population growth predicted to occur by 2035 and the industrialization of the developing world.
Development that meets the
needs of the present
without compromising the
ability of future generations
to meet their own needs
- The Brundtland Commission,1987
SUSTAINABLE DEVELOPMENT
Aspects of buildings
Natural
Social
Economical
Political
Cultural
Historical
Environment
al
1ENERGY
2ENVIRONMENT
3ECONOMY
Sustainability and the Construction Industry
'Sustainability‘ a central concern - with rising populations and economic development are threatening the degradation of the earth's resources.
The construction, maintenance and use of buildings impacts substantially on our environment and is currently contributing significantly to irreversible changes in the world's climate, atmosphere and ecosystem.
Towards Sustainable Development…
EnergyReducing energy consumption, being more energy efficient and using renewable energy and 'alternative technology'.
MaterialsChoosing, using, re-using and recycling materials during design, manufacture, construction and maintenance to reduce resource requirements.
Towards Sustainable Development…
WasteProducing less waste and recycling more
PollutionProducing less toxicity, water, noise and spatial pollution.
Towards Sustainable Development…
reducing
reusing
recycling
Materials
3R
Construction
Population Vegetation
Air Quality Climate
Transportation Watersheds
1/6 of the world’s freshwater withdrawals
1/4 of world’s wood harvest
2/5 of world’s material & energy flows
Building Industry Impacts
50
40
40
35
30
25
16
0 10 20 30 40 50 60
Ozone depleting CFCs in Use
Municipal Solid Waste to Landfills
Global Energy Use
Global CO2 Emissions
Raw Materials Consumption
Timber Harvest
Fresh Water Withdrawals
Percentage
Environmental and Economic Impacts of Buildings
Compiled from:Worldwatch Paper #124
Sustainability
Energy Efficiency
Healthy Structures
Building Longevity
Waste reductionRecycled –
content Materials
Water conservation
Integration of Environmental
concerns
Green Construction
WORKING PRINCIPLES
MATERIALS
Life-Cycle Assessment,
Eco-Labelling and
Embodied Energy Audits
Helpful for choosing materials and assess the
balance between short-term costs and long-
term environmental, social and financial
benefits.
Embodied Energy
‘Embodied' energy - every brick has used energy at every stage in its production and use.
Extracting raw materials.
Producing materials (Manufacturing
process).Transporting
materials.Transporting workforce.
Building structures. Using and powering structures.
Maintaining structures and demolishing structures.
CHOOSING AND USING MATERIALS SUSTAINABLE WAY
Consideration while re-evaluating the way materials are used in construction:
Material Reserves assessment and sustainable useReducing pollution impacts in the manufacturing process of new materialsRecycling existing materials (roof tiles, bricks, timber, etc.) and designed for conducive re-use
BIOCHAR / CHARCOALIN CONSTRUCTION
Ref: http://tinyurl.com/d5tzmj
CHOOSING AND USING MATERIALS SUSTAINABLE WAY
Reducing energy in the transport of materials (try sourcing heavy, bulky materials locally and lightweight materials globally).
Using prefabricated components (reduces waste and dust on site).
Use of low maintenance materials to reduce further energy and resource use in the future
Application of Sustainability
Pre-Design On-Site Design Construction O&M
Material Selection
Building Program
Project Budget
Team Selection
Partnering
Project Schedule
Laws, Codes
& Standards
Research
Site Selection
Site Analysis
& Assessment
Site Development
& Layout
Watershed
Management &
Conservation
Site Material
& Equipment
Environmentally
Conscious
Construction
Preservation of
Features &
Vegetation
Waste Mgmt
Source Control
Practices
Passive Solar
Design
Materials &
Specification
Indoor Air
Quality
Maintenance Plans
Indoor Quality
Energy Efficiency
Resource Efficiency
Renovation
Housekeeping &
Custodial Practices
Thank you