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Deconstruction An Introduction for theCook County Board of Commissioners March 13, 2012
DefinitionsDeconstruction•• Carefully dismantling a building and salvaging components for reuse. Results in: – Products for sale (windows, doors, lumber) – Jobs and trained labor force – Improved environmental qualityDemolition•• Destroying a building (or portion), often with heavy machinery, employing very few and resulting in some recycling, and large amounts of landfill waste.
Building Material Reuse Center: ReBuilding Exchange in ChicagoStore open 6 days a week, makingreused materials available to thepublic. Employs 10 FTE’s
Construction and Demolition WasteWaste – Construction and demolition material is largest single category of waste in Cook County – Cook County has 1 remaining landfill – 7 years of remaining capacityDemolition – 250,000 homes demolished annually in the US (2006 EPA figure, before increases due to foreclosure crisis) – Dust from demolition contributes to asthma.
Construction and Demolition WasteReuse potential - fixtures, doors, windows, cabinets, lumber, and brick are some of the materials in a typical home that can be reused. Sample diversion results from pilot Cook County deconstruction, June 2011
Cook County Pilot Deconstruction Contractor Training• Trained 60 contractors in deconstruction• Deconstructed 4 homes, 1 commercial bldg• Diverted 750 tons of waste from the landfill• Created 6 deconstruction case studies to use for policy initiatives.
Cost Comparisons: Demolition versus DeconstructionThe costs of deconstruction can vary. Factors that impact total project costs:• quality and integrity of the structure• labor costs• machinery and equipment• transportation costs• disposal and processing costs• revenues from sale of materials• avoided landfill and disposal charges