wisdot bureau of technical sevices spring 2014 qmp training base compaction spv’s and project...
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WisDOT Bureau of Technical SevicesSpring 2014 QMP Training
Base Compaction SPV’s
and Project Design
Guidance
Outline
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How’d we get here
Project selection/design guidance
SPV highlights
Still to come
How’d We Get Here?
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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.
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.
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Project Selection – Base Agg. Dense
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
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Project Selection - Mill/Pulv. & Relay
QC plan IA requirementsPersonnel requirements93% of target densityTest frequency“Failing” test/corrective
actionMeasurement and
payment
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Special Provision – Highlights
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.
QC Plan Requirements
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Personnel HTCP Nuclear Density Technician I Or ACT certified technician
IA According to the Department’s independent assurance
program
Misc Requirements
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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
Target Density Determination
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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
Test Frequency – QC/CA
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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
QC/CA – Proctor Triggers
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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
QV Frequencies
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IA Highlights
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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
<93.0%
Opt. Moisture
Deflection
<2.0 lb/ft3
No Deflection
<2.0 lb/ft3
Non-Opt. Moisture
Continue Compaction New %
Corrective Action
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1 ¼ - Inch BAD; Tons
Mill/Pulverize and Relay; SY
Water; MGal
Measurement and Payment
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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
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Still To Come
QuestionsNow or On Projects
(608)220-0690
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ftp://ftp.dot.wi.gov/dtsd/bts/pavement/Base_Comp_Docs