Asset management

Cover of Guide to Asset Management Part 5D: Strength
Guide to Asset Management Part 5D: Strength
  • Publication no: AGAM05D-08
  • ISBN: 978-1-921329-52-4
  • Published: 1 May 2008
  • Edition: 1
  • Superseded

Guide to Asset Management Part 5D contains guidelines for, and background notes on, network level measurement and reporting of deflection data, for road network management purposes in Australia and New Zealand. The guidelines discuss the frequency and scope of network deflection surveys, including issues such as selection of longitudinal sampling intervals or sampling proportions for deflection surveys. The guidelines are intended as a basis for a consistent approach in Australia and New Zealand. A glossary of terms used in network level assessment of pavement strength is also included.

  • 1. INTRODUCTION
    • 1.1. Context within the Guide to Asset Management
    • 1.2. Overview of Pavement Strength
    • 1.3. Objective and Structure of Guidelines
  • 2. SPECIFICATION AND TEST METHODS
    • 2.1. The Nature of Pavement Deflection
    • 2.2. Deflection and Pavement Performance
    • 2.3. Types of Strength Deflection Survey at the Network Level
    • 2.4. Occupational Health and Safety
    • 2.5. Scope of Deflection Surveys
      • 2.5.1. Introduction
      • 2.5.2. Prior Segmentation of Network by Inventory and Surface (Functional) Condition
      • 2.5.3. Preliminary Trial Structural Condition Survey
      • 2.5.4. Selection of Type of Main Survey
      • 2.5.5. Selection of Network Sample Size
      • 2.5.6. Determination of Test Point Spacing
      • 2.5.7. Selection of Location of Survey Test Points, by Lane and Wheelpath
      • 2.5.8. Location Referencing of Deflection Test Points
    • 2.6. Frequency of Deflection Surveys
      • 2.6.1. Selection of Frequency in Time (Intervals between Surveys)
      • 2.6.2. Consideration of When to Survey (Environmental Variation Effects)
      • 2.6.3. Road Authority Practices in Deflection Measurement Surveys
    • 2.7. Specification of Strength Surveys
    • 2.8. Data Reporting
      • 2.8.1. General
      • 2.8.2. Reporting Benkelman Beam Data
      • 2.8.3. Reporting Deflectograph Data
      • 2.8.4. Reporting Falling Weight Deflectometer Data
  • 3. TOOLS AND TECHNIQUES
    • 3.1. Introduction
    • 3.2. Benkelman Beam (BB)
      • 3.2.1. Sampling
      • 3.2.2. Measurement
    • 3.3. Deflectograph (DFG)
      • 3.3.1. Sampling
    • 3.4. Falling Weight Deflectometer (FWD) and Heavy Weight Deflectometer (HWD)
      • 3.4.1. Sampling
      • 3.4.2. Measurement
    • 3.5. Relative Merits of Different Deflection Testing Devices
    • 3.6. Developments in High Speed Deflection Capture Devices
  • 4. DATA QUALITY AND VALIDATION
    • 4.1. General
    • 4.2. Validation of Distance Measurement
    • 4.3. Calibration and Validation of a Deflectograph
    • 4.4. Calibration and Validation of a Falling Weight Deflectometer
  • 5. ANALYSIS
    • 5.1. Introduction
    • 5.2. Generic Data Processing Sequence
    • 5.3. Transformation of Data to a Standardised Form as FWD Equivalent Deflection
  • 6. APPLICATION
    • 6.1. Introduction
    • 6.2. Segment Level Reporting
    • 6.3. Network Level Reporting
  • 7. PROJECT LEVEL APPLICATION
  • REFERENCES