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Publication Number: FHWA-RD-01-169
Date: October 2005

Rehabilitation of Jointed Portland Cement Concrete Pavements: SPS-6, Initial Evaluation and Analysis

FIGURE 2 LTPP data collection and data movement flowchart.

  • LEVEL E DATA - Release to public [IMS Database (National)]
  • Data uploaded into IMS [IMS Database (National)]
  • Manual data upgrades by Regions if appropriate
  • Series of data-specific QC programs executed on data files
  • Data Loaded Into RIMS
  • DEFLECTION DATA - Collected with FWD
    • Data files sent to Regional Offices
    • QC using FWD SCAN - Data may be edited
  • LONGITUDINAL PROFILE - Collected with Profilometer
    • Field Control by checking on IRI variability
    • Data files sent to Regional Offices
    • PROFCHK: Recompute profile parameters & QC
  • TRANSVERSE PROFILE DATA
    • By Dipstick®
      • QC using PROFCHK by the Regions
      • Some profiles may be eliminated
    • With Film
      • Data analyzed & electronically stored
      • Data files sent to Regional Offices
  • DISTRESS DATA
    • Manually
      • Review & enter data by Regional Offices
    • Photographically
      • Data files sent to Regional Offices
  • MATERIALS DATA - Field & Laboratory Tests
    • Coring & sampling
      • Testing by LTPP
      • Testing by State agencies
    • In situ field testing
      • Test data/forms forwarded to Regional Offices
      • Review & convert data into Machine-readable form
  • TRAFFIC DATA - Collected by WIM & AVC
    • Data entered into Regional Traffic Database
    • Perform QC & flag data
    • All data
      • Central Traffic Database
    • Acceptable data
      • Compute summary statistics
  • CLIMATIC DATA - Collected at AWS
    • Data downloaded by modem or during site visit
    • AWS CHECK to review data
    • Data checked & extracted

Abbreviations

  • AVC = Automatic Vehicle Classification
  • FWD = Falling-Weight Deflectometer
  • IRI = International Roughness Index
  • AWS = Automated Weather Station
  • WIM = Weigh-in-Motion
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The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT).
The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT). Provide leadership and technology for the delivery of long life pavements that meet our customers needs and are safe, cost effective, and can be effectively maintained. Federal Highway Administration's (FHWA) R&T Web site portal, which provides access to or information about the Agency’s R&T program, projects, partnerships, publications, and results.
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United States Department of Transportation - Federal Highway Administration