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Optimization of Building Deconstruction for DOD Facilities. Principle Investigators: Dr. Angela Lindner University of Florida, Environmental Engineering Sciences Brad Guy University of Florida, Rinker School of Building Construction. When you’re done playing, put your stuff away….
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Optimization of Building Deconstruction for DOD Facilities Principle Investigators: Dr. Angela Lindner University of Florida, Environmental Engineering Sciences Brad Guy University of Florida, Rinker School of Building Construction
In 1995, the US Army estimated 250 million board feet of lumber were available in its WWII wood buildings slated for demolition.
Base Commander Executive Order 13101: Greening the Government Quantity of salvage for reuse/remanufacture Landfill capacity Lead Based Paint Safety time and costs Asbestos Health and safety Equipment costs Disposal Costs Labor skill and costs Time on building site Transportation costs Time of entire process OSHA, EPA, State regulations
UF Deconstruction Study Three Deliverables: • Optimization Sequence • Region IV Mentorship • Life Cycle Assessment
UF Deconstruction Study Three Deliverables: • Optimization Sequence • Region IV Mentorship • Life Cycle Assessment
What is Deconstruction? • Building disassembly to maximize the recovery of reusable and recyclable materials in a cost-effective, environmentally sound, and safe manner. • Pragmatic enabling of reuse/recycling of land, infrastructure, buildings, materials
Project Metrics • Non-hazardous wastes disposal costs • Quantity of salvage for reuse/ remanufacture • Quality or value of salvage for reuse/ remanufacture • Time on building site • Time of entire process • Safety time and costs • Labor skill and costs • Equipment costs • Transportation costs • Hazardous materials abatement, handling, and disposal costs Project Site:Ft. McClellan
Scenario 1In situ deconstruction of building in structural sequence
Scenario 2 Panelization of 2nd floor as one element and parallel deconstruction of two building halves
Scenario 3Mechanical panelization of building then deconstruction of individual elements
Scenario 4In situ deconstruction and panelization of major elements in sequence
Commander UF Deconstruction Study Next Deliverable: • Optimization Sequence • Region IV Mentorship • Life Cycle Assessment
Region IV Mentorship • Deconstruction Computer Model • Team w/ University of Louisville • Ft. Bragg, Ft. Rucker, others • “Deconstruction and Materials Reuse” Conference, May 2003 • EPA, FDEP, UBMA, CIB, CERL
UF Deconstruction Study Final Deliverable: • Optimization Sequence • Region IV Mentorship • Life Cycle Assessment
Definition of Life Cycle Assessment (LCA) “…examining the environmental releases and impacts of a specific product by tracking its development from a raw material, through its production and to eventual disposal.” • U.S. Environmental Protection Agency
Costs: Labor, Capital, etc… Savings LCA Example: Pine & Fir Siding Old Growth Forest Harvesting Coproducts Raw Materials Air Transportation Energy Wood Siding Manufacture Water Transportation Solid Waste Water Product Distribution, Use, Reuse Other Transportation Disposal Denotes beneficial reuse of salvaged materials
Proposed Tasks • Develop a Database • Region IV surplus facilities’ characteristics • Information on the deconstruction process • Types and sequence of activities, total amounts of salvage, total hours of hand/mechanical labor, total costs, etc.
Proposed Tasks continued… • Identify viable reuse options • New “markets” for salvaged materials • Conduct LCA on virgin vs salvaged materials use in viable reuse applications • Economic, environmental, social impact analysis
Research Needs from DOD • Information concerning all Region IV facilities available for deconstruction • Contacts with this information • Meetings at the sites if necessary • Feedback! • Especially during the Scoping phase • Input/output data during Data Collection phase • Participation in regular progress report reviews
UF Deconstruction Study Review of Deliverables: • Optimization Options • Region IV Mentorship • Life Cycle Assessment … coordinated with the University of Louisville, Kentucky P2 Center, Ft. Knox, CERL, EPI, EPA, FPL, FDEP