Lecture9Materials - Lecture9 Materials Prologue The average...

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Lecture 9 Materials
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Prologue The  average  American  in  their  lifetime  accounts for the use of 540 t of construction materials, 18 t of paper, 23 t of wood, 16 t of metals, and 32 t of organic  chemicals.    (p.  11,  Worldwatch  Paper 121, The Next Efficiency Revolution: Creating a Sustainable Materials Economy, John E. Young & Aaron Sachs, September 1994)
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Context • Materials are the most difficult problem to  address in sustaining the built environment – What are ‘green materials’? – How do we evaluate them? – What is the best we can do? – What are the limitations? – How do we make industry change? • Materials flows between all economic  sectors, construction uses about 40% in  U.S.
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Revised Sustainable Construction Framework (1994-2005) Production 6. Life Cycle Costing Ecosystems Source: “Principles and a Model for Sustainable Construction,” C.J.Kibert, Proceedings of the 1 st International Conference on Sustainable Construction, Tampa, Florida USA, 6-9 November 1994
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Principles of Sustainable Construction Minimize resource consumption (Conserve) Maximize resource reuse (Reuse) Use renewable or recyclable resources (Renew/ Recycle) Protect the natural environment (Protect  nature) Create a healthy, non-toxic environment  (Non-Toxics) Apply Life Cycle Cost Analysis (Economics) Pursue Quality in creating the built  environment (Quality)
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Evolution of sustainable construction phases Products Design for the  Environment (DfE) Planning New Urbanism Architecture Ecological design Construction Best construction  practices Operation Green building  operations Disposal Deconstruction
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Accelerating Progress- Closing Materials Loops • Products: DfE – Embedded in emerging science of Industrial Ecology – Well-established in other sectors: automotive, appliances,  electronics – Materials selection and fastening systems are crucial • Design: Ecological design – Appears in virtually definitions of sustainable construction/green  building – Weakest link in sustainable construction- evolution has been slow  – Must include detailed and comprehensive natural systems  integration • End of Life: Deconstruction – Whole/partial disassembly of buildings to enhance reuse and  recycling – Design for deconstruction is an essential requirement
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DfE in Computer Industry
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Raw Materials New Components Build Certified Reprocessing Certified Reprocessing Deliver Customer Use Closed Loop Recycling Third Party Recycling Alternative Uses Return to Suppliers Materials for Recycling Sort/Inspect Disposal Goal: Zero to Landfill Dismantle Remove DfE Example – Xerox Corporation
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Solenium Carpeting, Interface, Inc.
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Ecological Design • Some definitions – the effective  adaptation to  and  interaction with  nature’s processes (Sim Van der Ryn)
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