Full Depth Reclamation (FDR) Techniques

The FDR processes have an increased speed of construction and are more environmentally friendly than deep rehabilitation or reconstruction procedures.

• FDR cuts down on greenhouse gasses by reducing and/or eleminating the use of new materials. Most or all existing on-site materials can be used in the FDR process.
• By eliminating or reducing the use of new materials and by using on-site materials there is no need to dispose of any materials.

• Size of project
• Project Phasing: Multiple location projects vs. single location projects (5-mile job on 1 road vs 1-mile job in 5 different places)
• Traffic maintenance (closed local traffic only vs. alternate traffic patterns through the project)
• Urban work (manholes / catch basins, intersection control add to cost) vs rural work
• Night work (costs more for labor but less traffic disruptions)
• Bidding/Tender date vs Completion date, number of working days
• Raw material pricing (stabilizing agent)
• Competitive bids (number of contractors in Region)

• Perform preconstruction testing and evaluation (drainage, subgrade, structure, etc)
• Incorporate FDR section into structural design
• Provide mix design with bidding/tender
• Provide cores to give contractor better assessment of existing material
• Early bidding/tender closing (ideally Oct-Dec for the next year’s work)
• Clear, constructable specifications and QC requirements
• Fair assignment of risk
• Inclusion of FDR in a yearly overall pavement management plan