Asset management

Cover of Pavement Deflection Measurement with a Falling Weight Deflectometer (FWD)
Pavement Deflection Measurement with a Falling Weight Deflectometer (FWD)
  • Publication no: AGAM-T006-11
  • Published: 31 March 2011

This test method defines the procedure for measuring the deflection response of road pavements using a Falling Weight Deflectometer (FWD).

  • 1. Scope
  • 2. Referenced Documents
  • 3. Definitions
  • 4. Equipment
    • 4.1. Minimum Equipment Specification
    • 4.2. Automatic Data Quality Checks
    • 4.3. Manual Data Quality Checks
  • 5. Calibration and Validation
    • 5.1. Calibration Scheme
    • 5.2. Reference Calibration
    • 5.3. Relative Calibration
    • 5.4. Deflection Sensor Monitoring and Replacement
    • 5.5. System Validation
  • 6. Procedure
    • 6.1. FWD Set-up
    • 6.2. Deflection Survey
    • 6.3. Factors Affecting the Test
  • 7. Calculations
  • 8. Reporting
    • 8.1. Data
    • 8.2. Data Precision
    • 8.3. Filtering of Deflection Sensor Readings
  • Commentary