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Deconstruction: A Local Government
Model
Wayne FentonOrange County Public Works,
Hillsborough, NC
What is Deconstruction?
• Deconstruction is the process of selectively and systematically disassembling buildings that would otherwise be demolished to generate a supply of materials suitable for reuse in the construction or rehabilitation of other structures.
• Deconstruction differs from recycling in that recycling does not seek to capture building materials in a reusable form (i.e., whole bricks, blocks, clean, unbroken pieces of lumber, etc.)
A Brief History
• Orange County owns 34 buildings • Buildings range in age from pre-
Revolutionary war to modern structures
The Building
Approximately 3,000 square feet
The Experiment
• A 1920’s/1950’s mixed construction structure housing a sheltered workshop
• Building located in heart of historic district
• Sat vacant for several years after suffering severe storm damage
• Options considered
The Process
• Project approved by BOCC• Purchasing Dep’t persuaded • Bid-process tailored • Seasoned local deconstruction
specialists hired• Process documented
Desired Project Outcomes
• Removal of unsafe structure
• Capture of valuable materials, especially for use in other similar vintage structures
• Demonstrate feasibility of process
• Provide skills enhancement opportunities
• Document the process:– To develop
promotional video– To develop basic
“how-to” video
Materials Recovered
• 39+ tons of building materials recovered for reuse through deconstruction
Recovered Materials
BRICK CONCRETE BLOCKS
DIMENSIONAL FRAMING
LUMBER
OAK TONGUE & GROOVE FLOORING
PINE TONGUE & GROOVE
FLOORING
WINDOWS
DOORS WOOD SIDING
PINE WALL PANELING
Materials Recycled
• 6 tons of metal• 1 ton of white goods• 140 tons of concrete
Waste Generated
• Less than 100 tons of waste generated by deconstruction required disposal
• Primarily rotted wood, mixed composition items, sheetrock, shingles
Benefits of Deconstruction
Economic
• Cost of deconstruction can be less than cost of demolition
• Salvaged materials have a value• Cost avoidance in tipping fees• Preservation of landfill space• Job-skills training
Environmental
• Preservation of landfill space• Resource conservation• Deconstruction a cleaner
technology than demolition – less noise, air pollution
Educational
• Governments should lead by example
• Act as a catalyst to contractors, facility owners/managers
• Be a model for other governments
Cost Benefit Analysis
Demolition Costs• Estimate:
$50,000
Deconstruction Costs• Actual Expenditures:
$37,929
Savings• Salvaged Materials
Value: $37,130*• Landfill Fees Avoided:
$1,600
* Based on local vendor estimate
Measuring Success
• Structure successfully and safely removed
• Some materials have been reused in other projects
• Demonstrated feasibility of deconstruction option
• Provided temporary workers with enhanced skills – two hired by County, one still employed
• Promotional video complete & limited distribution
The Video
• High quality, low budget
• 16 minutes running time