28-04-2011, 12:35 PM
PRESENTED BY:
MRINAL RAJA C
[attachment=13005]
GREEN BUILDINGS A SOLUTION FOR THE FUTURE
Definition of GREEN BUILDING
A building which is like a kind of a tree that would purify air, accrue solar income, produce more energy than it consumes, create shade & shelter, enrich soil & change with seasons.
What led us to GREEN BUILDING ?
A building consumes :
2/5th of World energy production (excluding the energy required to harvest, manufacture & transport)
1/6th of all water pumped out of natural flows
¼th of all virgin wood harvested (excluding furniture)
Ecological Footprints (concept developed by William Rees)
We are consuming resources like we live on more than 2 planet Earth
Factor 10 efficiency gain
If we are consuming the resources of 2 planets, then a Factor 2 reduction is needed just to get to 1 Earth consumption & further a Factor 10 to get sustainability & balance when development of the majority of the planet is considered.
Population growth
Resource consumption
Waste production
SOURCE: ROODMAN, D. & N. LENSSEN. 1995. “ A Building Evolution: How Ecology and Health Concerns are Transforming Construction”. World Watch Paper #124, March 1995
Goals of GREEN BUILDING
To satisfy motives of environmental, economic & social benefits
Reduce environmental impact of new buildings
An integrated & synergistic design of modern sustainability to both new construction & in the retrofitting of an existing structure
To bring together a vast array of practices & techniques to reduce and eliminate the impacts of new buildings
Introducing green architecture (sustainable design) into structures
Building materials from local sources, reduce loads, optimize systems & generate on site renewable energy
Siting & Structure design efficiency
Concept stage – has largest impact on cost & performance
Objective – minimize the total environmental impact associated with all life-cycle stages of the project
Buildings – are much more complex products, composed of a multitude of materials & components each constituting various design variables to be decided at design stage
Possibilities of outdoor public amenities
Pervious & Impervious soils
Access to nearest transportation
Existing vegetation should be viewed as an asset to enhance design & reduce the impacts of the development
Material selection & Efficiency
Green Building Decision Matrix
Issues related to material selection
Prioritization of issues
Checklist
References
Green materials
Bamboo, straw, lumber, insulated concrete forms, dimension stone, recycled stone & other products that are non-toxic, reusable, renewable, or recyclable
Materials should be extracted & manufactured locally to the building site
But where possible off-site manufacturing also need to be considered to minimise waste, maximize recycling high quality elements, less noise & dust
Recycled industrial goods (EPA)
Energy efficiency
Include measures to reduce energy use
To increase efficiency of the building envelope they may use high-efficiency windows & insulation in walls, ceilings & floors
Passive solar building design is implemented
Maximum daylighting(effective window placement) to be provided
Solar water heating reduces energy loads
On-site generation of renewable energy – solar energy, wind power, hydropower, biomass
IEQ enhancement
Indoor Environmental Quality, one of the five environmental categories
Addresses design & construction guidelines such as:
Indoor Air Quality (IAQ)
Reduce VOC’s & other microbial contaminants
Buildings rely on HVAC systems
Zero or low emission products improve IAQ
Thermal Quality
Personal temperature & airflow control over HVACs
Properly deisgned building envelope
Lighting Quality
Creating a high performance luminous environment
Waste & Toxic Reduction
Reduce waste of energy, water & materials
During construction phase : reduce amount of materials going to landfills
Well-designed buildings : help reduce waste generated by occupants by providing on-site solutions
Compost bins-to reduce matter going to landfills
Greywater-used for non-potable purposes & irrigation
Biogas plants (biological waste, human waste)
Create carbon sinks
Cost & pay-off
Initial cost is high
Decreased energy bills
Gain is rendered through a life cycle
Different sectors could save $130bn on energy bills
Studies show that : Over a 20yr life period, green buildings have yielded $53 to $71 per square foot back on investment
MRINAL RAJA C
[attachment=13005]
GREEN BUILDINGS A SOLUTION FOR THE FUTURE
Definition of GREEN BUILDING
A building which is like a kind of a tree that would purify air, accrue solar income, produce more energy than it consumes, create shade & shelter, enrich soil & change with seasons.
What led us to GREEN BUILDING ?
A building consumes :
2/5th of World energy production (excluding the energy required to harvest, manufacture & transport)
1/6th of all water pumped out of natural flows
¼th of all virgin wood harvested (excluding furniture)
Ecological Footprints (concept developed by William Rees)
We are consuming resources like we live on more than 2 planet Earth
Factor 10 efficiency gain
If we are consuming the resources of 2 planets, then a Factor 2 reduction is needed just to get to 1 Earth consumption & further a Factor 10 to get sustainability & balance when development of the majority of the planet is considered.
Population growth
Resource consumption
Waste production
SOURCE: ROODMAN, D. & N. LENSSEN. 1995. “ A Building Evolution: How Ecology and Health Concerns are Transforming Construction”. World Watch Paper #124, March 1995
Goals of GREEN BUILDING
To satisfy motives of environmental, economic & social benefits
Reduce environmental impact of new buildings
An integrated & synergistic design of modern sustainability to both new construction & in the retrofitting of an existing structure
To bring together a vast array of practices & techniques to reduce and eliminate the impacts of new buildings
Introducing green architecture (sustainable design) into structures
Building materials from local sources, reduce loads, optimize systems & generate on site renewable energy
Siting & Structure design efficiency
Concept stage – has largest impact on cost & performance
Objective – minimize the total environmental impact associated with all life-cycle stages of the project
Buildings – are much more complex products, composed of a multitude of materials & components each constituting various design variables to be decided at design stage
Possibilities of outdoor public amenities
Pervious & Impervious soils
Access to nearest transportation
Existing vegetation should be viewed as an asset to enhance design & reduce the impacts of the development
Material selection & Efficiency
Green Building Decision Matrix
Issues related to material selection
Prioritization of issues
Checklist
References
Green materials
Bamboo, straw, lumber, insulated concrete forms, dimension stone, recycled stone & other products that are non-toxic, reusable, renewable, or recyclable
Materials should be extracted & manufactured locally to the building site
But where possible off-site manufacturing also need to be considered to minimise waste, maximize recycling high quality elements, less noise & dust
Recycled industrial goods (EPA)
Energy efficiency
Include measures to reduce energy use
To increase efficiency of the building envelope they may use high-efficiency windows & insulation in walls, ceilings & floors
Passive solar building design is implemented
Maximum daylighting(effective window placement) to be provided
Solar water heating reduces energy loads
On-site generation of renewable energy – solar energy, wind power, hydropower, biomass
IEQ enhancement
Indoor Environmental Quality, one of the five environmental categories
Addresses design & construction guidelines such as:
Indoor Air Quality (IAQ)
Reduce VOC’s & other microbial contaminants
Buildings rely on HVAC systems
Zero or low emission products improve IAQ
Thermal Quality
Personal temperature & airflow control over HVACs
Properly deisgned building envelope
Lighting Quality
Creating a high performance luminous environment
Waste & Toxic Reduction
Reduce waste of energy, water & materials
During construction phase : reduce amount of materials going to landfills
Well-designed buildings : help reduce waste generated by occupants by providing on-site solutions
Compost bins-to reduce matter going to landfills
Greywater-used for non-potable purposes & irrigation
Biogas plants (biological waste, human waste)
Create carbon sinks
Cost & pay-off
Initial cost is high
Decreased energy bills
Gain is rendered through a life cycle
Different sectors could save $130bn on energy bills
Studies show that : Over a 20yr life period, green buildings have yielded $53 to $71 per square foot back on investment
