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WisDOT Bureau of Technical Sevices Spring 2014 QMP Training Base Compaction SPV’s and Project Design Guidance
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2 How’d we get here Project selection/design guidance SPV highlights Still to come
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3 2013 pilot projects IH-43 Ozaukee Co. USH 63 St. Croix Co. (x2) STH 179 Crawford Co. STH 29 Brown Co. STH 153 Marathon Co. Spec revisions 1 ¼ – Inch BAD Mill/Pulverize and Relay STH 47 Vilas Co. USH 51 Lincoln Co. STH 73 Wood Co. STH 29 Marathon Co. Fishel Road Forest Co.
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HMA surfaced mainline AND QMP Subgrade and/or Subgrade improvement AND 30,000 tons+ Between 2010 and 2013 17% of all let projects 31% of HMA projects 54% of HMA projects with 1-1/4” base agg. 4 ProjectSelection – Base Agg. Dense Project Selection – Base Agg. Dense
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Minimum Mill and Relay or Pulverize and Relay Quantity of 40,000 SY Between 2010 and 2013 3% of all let projects 43% of pulverize and relay projects 56% of mill and relay 5 Project Selection - Mill/Pulv. & Relay
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QC plan IA requirements Personnel requirements 93% of target density Test frequency “Failing” test/corrective action Measurement and payment 6 Special Provision – Highlights
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Organizational chart Communication process Source locations list (1 ¼” spec only) Stockpiling and hauling methods (1 ¼” spec only) Process control problem resolution process QC lab, sample, and documentation storage locations Estimate of locations and calculated quantities to be tested under this provision. 7
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Personnel HTCP Nuclear Density Technician I Or ACT certified technician IA According to the Department’s independent assurance program 8
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1 ¼ - Inch Base Aggregate Dense ≤20% Recycled Material Modified Proctor Max Dry >20% Recycled Material Mod. Proctor Max Wet Mod. Proctor Max Dry Control Strip Mill/Pulverize and Relay Control Strip 9
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1 ¼ - Inch Base Aggregate Dense Density – 1 per 1500 tons Gradation – 1 per 3000 tons Proctor – initial and then if trigger met Mill/Pulverize and Relay Density – 1 per 3000 tons Proctor – initial and then if trigger met CA – Optional Information Process control decisions Troubleshooting Limiting liability and/or corrective action limits 10
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1 ¼ - Inch Base Aggregate Dense Gradation change > 10.0% Source change Recycle material blend change > 10.0% Density > 103% on two consecutive measurements If using control strips; thickness change > 2.0 inches Mill/Pulverize and Relay Layer thickness change > 2.0 inches Density > 105% or <90.0%; AND outside of range of 10 avg control strip shots; on three consecutive measurements 11
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Density and gradations 30% of Contractor Frequency Target densities; Same triggers as QC Control Strips QV person must be present and verify sufficient compactive effort (including addition of water) Will use same value as contractor 12
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13 Evaluate QV and QC sampling and testing May include one or more of the following: Split sample testing Proficiency sample testing Witnessing sampling and testing Test equipment calibration checks Additional sampling and testing
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1 ¼ - Inch BAD; Tons Mill/Pulverize and Relay; SY Water; MGal 15
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Facilities Development Manual guidance – March 2014 Project selection guidance Water bid item 10 – 20 gallons per ton 1 ¼ - Inch BAD 3 – 6 gallons per SY Mill/Pulverize and Relay Revisions – Fall 2014 Conversion to STSP – Spring 2015 16 Still To Come
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Questions Now or On Projects jed.peters@dot.wi.gov or (608)220-0690 17 ftp://ftp.dot.wi.gov/dtsd/bts/pavement/Base_Comp_Docs
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