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08_-_Chapter_09_-_Closing_Material_loops

08_-_Chapter_09_-_Closing_Material_loops - BROTHER BURR...

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BROTHER BURR CLOSING MATERIAL LOOPS
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Stewardship The resources so necessary to sustain human life are so generously provided on this particular planet; unless they are mismanaged , we are told that there is “enough and to spare.” Neal A. Maxwell (Our Creator’s Cosmos, 2002)
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BROTHER BURR Chapter 9 Closing Material Loops
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Green Building Products Vs. Green Building Materials Green Building Materials basic materials that may be the components of products or used in a stand-alone manner. They have a low environmental impact compared to alternatives. Green Building Products building components that are environmentally preferable to their alternatives. Next: Issues in Selecting Green Materials
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* Green building products may not be made of green building materials (e.g. a low-e glass window may not be made out of recycled glass, but it is considered green because of its energy efficiency). Green Building Products Vs. Green Building Materials
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Issues in Selecting Green Materials “Determining how building materials will affect the environment is the central unresolved problem of the green building movement (Kibert, 240). Next: Prius/Hummer Comparison
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Which is Greener? H1 Hummer 45 MPG Estimated Life: 109,000 Toyota Prius 13 MPG Estimated Life: 379,000 Other environmental considerations: Lifetime maintenance, accident repair, energy & resources from manufacturing process, transportation to retail, recyclables, non-recyclables, reusability, etc. Next: Bamboo/hardwood Comparison Moral of the Story: It’s not always clear what’s greener
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Which is Greener? Bamboo Flooring Hardwood Flooring Rapidly Renewable Typically more durable Finishes sometimes contain formaldehyde Bamboo creates O 2 and absorbs CO 2 4x more than traditional trees High transportation costs (Asian Import) Next: 3 Methods for Measuring Greenness Renewable Potentially lower transportation costs Moral of the Story: It’s not always clear what’s greener
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The Natural Step , a tool to assess sustainability. In order for a society to be sustainable: 1. Extraction of minerals, metals, & fossil fuels from the Earth’s crust will be minimized. 2. Society will reduce dependence on man-made substances. 3. Society must not overharvest and must allow ecosystems to renew themselves and rebuild waste into resources. 4. Resources will be used fairly and efficiently to meet basic human needs globally.
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