Transcript Document

Green 200: The Science of Green Building
Course Goals
Green principles in design and
construction
Innovative materials, systems, and
construction methods
Energy-efficient systems including
onsite power generation
Retrofitting, remodeling, or
renovating existing homes
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Learning Objectives
1. Green Home Design
– how professionals make choices and
work together
2. Green Home Construction—
The Building Envelope
– Moving design choices from the
drawing table to the site
3. Green Home Construction—
Systems
– Green systems inside the home
4. Power Off the Grid
– Generating electricity off the grid
5. Greening Existing Homes
– Retrofitting, remodeling, and
renovating existing homes
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Green Home Design
3 Reasons for Green
1. Health and indoor air
quality concerns
2. Energy efficiency
3. Environmental concerns
– consumers are willing to
reward or penalize a
company based on its
green actions and
priorities.
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Green Design, Green Choices
1. Site
selection
2. Home
Design
3. Materials
selection
Four phases
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4. Interior
systems and
design
Site Selection
Traditional building
• Starts with the design of
the home
• Less consideration for the
site
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Green building
• Starts with assessment of
the site
• Create a structure that
integrates into the
environment
• Proximity to
transportation and
walkability to amenities
Site Selection
• Green building; consider
seasonal impacts of the site:
 Location—transportation and
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walkability
Greenfield, greyfield, or brownfield?
Sunlight patterns
Prevailing winds
Storm water runoff and snow
accumulation patterns
Natural features such as hills and
trees
Climate and microclimates
Ecosystems, wildlife habitats and
corridors, wetlands
The Green Team
• Planning
• Design
• Construction
Everyone
• Operation
including the
• Maintenance
homeowner
Real Estate
Professionals
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• Choosing a site
• Developing new homes
• Offering market knowledge
• Guide clients and customers to help make
decisions
Home Design
• Green building,
“functional” and
“compact”
• Small homes
– cost less to build and
maintain
– use less material
– feel cozy and sheltering
• Large homes contribute
to sprawl
– require more materials
– consume more energy
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Tip: Homeowners should make
a list of all activities to assure
home will meet their needs.
Home Design
Checklist
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 Layout and size
 Minimize solar heat gain
 Maximize natural lighting
 Framing
 Building codes and zoning
 Incentives
 Landscaping
 Water management
 Energy efficiency
 Recycling
 Certifications
 Future marketability
 Architectural appeal
Building Materials
• Reclaimed sawdust in
composite floorings
• Bamboo in decorative
veneers
• Shredded paper and
cardboard in waterproof
building sheathing
• Recycled glass in
countertops and
flooring
• Crushed seashells in
decorative tiles
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Tip: Refer to Green 100 for a list of
material certifying organizations.
Embodied Energy
Before
construction
During
construction
After
construction
the sum of all energy inputs over the lifetime of materials
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Indoor Air Quality and Building
Materials
• Green construction materials minimize or
eliminate emissions from:
– Paint and adhesives
– Carpet
– Cabinetry
– Wall board
– Wall coverings
– Pressure treated lumber
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Pressure Treated
Lumber
• Purposes: to retard rotting
and repel pests.
– Chromated copper
arsenate (CCA)
• May be present in older
buildings .
• Requires special handling
for disposal.
• Burning CCA emits arsenic.
– Copper-based
preservatives (arsenicfree)
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Managing Construction Waste
• 2,000 sq ft home =
up to 8,000 lbs of
waste
• Most waste
– Wood
– Cardboard
– Drywall
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• Green construction
plan:
– efficient cuts
– minimal or recycled
packaging
– deconstruction instead
of demolition
Interior Systems
• Interrelationships
– Balance; site with building orientation, ventilation
with air quality and moisture control, HVAC with
insulation.
• Sound and Light
– Balance privacy, natural lighting, ventilation,
connection with nature, interior heating or
cooling, and quiet spaces.
• Indoor Climate
– Balance livability with sustainability and energyefficiency.
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Interior Systems
• Water Management
– Conserving, harvesting and heating
• Energy Load
– Energy modeling estimates energy consumed
in BTUs, dollars, or pollution avoidance as a
result of design and system choices.
• On Site Energy Generation
– Home design systems for generating and
storing, or selling back, electricity.
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