LTPP Manual for Falling Weight Deflectometer Measurements Operational Field Guidelines Version 3.1

008059042000PDFResearch PaperCalibrationData collectionDeflectionFalling weight deflectometersField testsPavement performanceEquipmentEquipment maintenanceManualsMeasurementPavementsUnited StatesFederal Highway AdministrationUnited States. Federal Highway Administration. Office of Infrastructure Research and DevelopmentUS Transportation CollectionThis manual was developed for use by personnel responsible for collecting deflection data on pavement test sections in the Long Term Pavement Performance (LTPP) program. The manual provides field operational guidelines for data collection under the following headings: (1) Falling Weight Deflectometer (FWD) Field Test Procedures, (2) Data Acquisition and Handling, (3) Equipment Calibration, and (4) Equipment Maintenance and Repair. The test procedures contained in this manual are a product of the LTPP program and its many participants. These test procedures are designed for pavement research purposes.78