Transcript 11 - Goodheart

Chapter
11
Designing for Sustainability
Objectives
• Explain the difference between sustainability and
green building.
• List six major sustainable design concepts and
explain how they apply to residential design.
• Explain the concept of building information
modeling.
• Describe two national certification programs for
sustainable housing.
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Permission granted to reproduce for educational use only.
Sustainability vs. Green Building
• Sustainability: meeting human need for food,
housing, other needs and wants, without using up
nonrenewable resources, and without negatively
affecting the environment
– Sustainable building
• Green building: strives to efficiently use materials
and processes, reduce pollution, and cause little
damage to environment
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Permission granted to reproduce for educational use only.
Sustainability vs. Green Building
• Sustainability identifies general concepts relating
to green building technology and sustainable
design
• Many buildings being constructed using
environmentally friendly practices are still in “green
building” phase
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Permission granted to reproduce for educational use only.
Sustainable Design Concepts
• Consider entire life cycle of the home
– Design and construction stage, occupancy or use
stage, and end-of-life stage
• Avoid depleting (using up) natural resources
• Prevent damage to the environment throughout
the building’s life cycle
© Goodheart-Willcox Co., Inc.
Permission granted to reproduce for educational use only.
Sustainable Design Concepts
• Elements of sustainable building design:
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Proper site selection
Efficient placement of house on site
Use of sustainable materials and processes
Improved energy choices and use
Water conservation and protection
Low-impact or no-impact operation and
maintenance
– Adaptability to meet multiple purposes
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Permission granted to reproduce for educational use only.
Site Selection
• Select site before home is designed
• Consider impact of development on area’s
ecosystem
– Multiple effects no matter where building is placed
on site
• Consider amount of energy needed for building
and then living on site
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Locating the House
• Determine building location and orientation on site
• Use existing plants, sun and wind patterns to your
advantage
• Plan to pave as little of site as possible
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Locating the House
(Nejron Photo/Shutterstock.com)
• Choosing a proper site.
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Permission granted to reproduce for educational use only.
Green Architecture
• Aluminum: A sustainable material
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100% recyclable
Can be recycled over and over
A simple process that saves energy
If placed in a landfill, aluminum items may take
hundreds of years to decompose
– Recycled aluminum items often used in the home
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Permission granted to reproduce for educational use only.
Designing a Sustainable Home
• Design stage critical to long-term sustainability
• Choose materials and building processes that
minimize impact on environment
– Reclaimed or recycled building materials
• Reduce or eliminate use of toxic substances
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Permission granted to reproduce for educational use only.
Reclaimed and Recycled Building Materials
• Reclaiming involves salvaging materials from
buildings being torn down and other sources
• Recycling involves using materials made of
recycled materials and recycling the homes
materials at the end of its useful life
– For example, fly ash used to make concrete
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Permission granted to reproduce for educational use only.
Toxic Substances to Avoid
• Polyvinyl chloride (PVC)
– Creates dioxins during production and disposal
– Dioxins and heavy metals known as persistent
bioaccumulative toxicants (PBTs)
– Relatively green alternatives available
• Volatile organic compounds (VOCs)
• Semi-volatile organic compounds (SVOCs)
• Pressure-treated lumber
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Permission granted to reproduce for educational use only.
Greenwashing
• Green building popularity leads manufacturers to
make false claims about products being green or
environmentally friendly
– Known as greenwashing
• Read labels carefully, research products or
ingredients before purchasing
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Permission granted to reproduce for educational use only.
Energy Choices
• Net zero energy buildings rely on renewable
energy sources, avoid nonrenewable energy
sources
• Renewable energy includes solar energy,
geothermal energy, and energy efficient
techniques such as weatherization, daylighting,
solar harvesting
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Permission granted to reproduce for educational use only.
Energy Choices
(LesPalenik/Shutterstock.com)
•Weatherize door and window openings.
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Permission granted to reproduce for educational use only.
Water Conservation and Protection
• There is a fixed amount of water on Earth
• Fresh water supplies are in demand
• To conserve and protect fresh water supplies:
– Use water-efficient plumbing fixtures such as lowflow toilets
– Install irrigation systems that use gray water
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Permission granted to reproduce for educational use only.
Operation and Maintenance
• Low-cost design ideas that increase sustainably
over the lifetime of the home
– Install only ENERGY STAR appliances
– Use water-efficient landscaping methods, such as
xeriscaping and irrigation systems
– Do not overwater
© Goodheart-Willcox Co., Inc.
Permission granted to reproduce for educational use only.
Adaptability
• Homes are sometimes no longer needed or
wanted
• Flexible structures can be repurposed
– Design homes to meet ADA standards
– Use movable walls
• Some homes must be torn down
– During original design stage, use recyclable or
reusable materials
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Permission granted to reproduce for educational use only.
Building Information Modeling (BIM)
• Building Information Modeling, or BIM, is process
that utilizes software tools to streamline building
design, analysis, management
• Provides a way of looking at building projects that
includes design, construction, and also managing
the building throughout life cycle
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Permission granted to reproduce for educational use only.
Green Home Certifications
• Several national organizations and associations
offer certification that a home meets specific
“green” standards
– Leadership in Energy and Environmental Design
(LEED)
– National Green Building Certification Program
– ENERGY STAR
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Permission granted to reproduce for educational use only.
LEED for Homes Program
• In 2000, US Green Building Council (USGBC)
developed certification program called LEED
Green Building Rating System
• LEED for Homes rates buildings on different
factors to achieve a “whole-building approach” to
sustainability
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Permission granted to reproduce for educational use only.
LEED for Homes Program
(US Green Building Council)
• First page of LEED for Homes Simplified Project
Checklist.
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Permission granted to reproduce for educational use only.
National Green Building Certification
Program
• Offered by Research Center at the National
Association of Homebuilders (NAHB)
• Approved by the American National Standards
Institute (ANSI)
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Permission granted to reproduce for educational use only.