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LLP HMA Pavements Inertial Profiler. Prebid Meeting Solano 80 - 04-4A0104 Oakland, CA September 14, 2012 Peter Vacura Chief, Office of Asphalt Pavement Division of Maintenance. Overview. Inertial Profiler in lieu of California Profilograph Inertial Profiler Specifications - PowerPoint PPT Presentation
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LLP HMA PavementsInertial Profiler
Prebid MeetingSolano 80 - 04-4A0104
Oakland, CASeptember 14, 2012
Peter VacuraChief, Office of Asphalt Pavement
Division of Maintenance
OverviewInertial Profiler in lieu of California ProfilographInertial Profiler Specifications– Certification– Calibration– Acceptance Criteria
IRILocalized RoughnessAnalysis Tools
Incentive/Disincentive
Inertial Profiler in lieu of California Profilograph
California Profilograph utilizes a center wheelInertial Profiler utilizes an accelerometer and laserMeasures at highway speedNo lane closures required
Inertial Profiler SpecificationsEquipment and Operator certification performed by Texas Transportation InstituteIn accordance with AASHTO PP 49-08Local Calibration at the project– 5 Runs– 0.92 correlation
In accordance with AASHTO PP 50-08
Inertial Profiler SpecificationsIndex Acceptance Criteria– International Roughness Index (IRI) in lieu of
Profile Index– Acceptance between 45.1 and 60 in/mi
Bump Acceptance Criteria– Localized Roughness in lieu of bump must
grind– IRI of 140 in/mi within a 25 foot measurement
Inertial Profiler SpecificationsAnalysis Tools– Vendor analysis tool– Proval analysis tool
Provides reports that include data required in the contract
Incentive/DisincentiveMeasurements based on 0.1 mile lotsIncentive is paid for IRI < 45.1 in/miDisincentive pay adjustment for IRI > 60 in/miCorrection required for IRI > 75 in/mi to within the acceptable range
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