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Falling Weight Deflectometer (FWD) Directives
Directive Description Date Status Remarks
FWD-01 File Naming Convention for Deflection Testing at Seasonal Monitoring Sites 15-Jan-93 Final Superseded
FWD-02 Implementation of the Manual for FWD Testing in the LTPP Study Operational Field Guidelines Version 2.0 7-May-93 Final Procedures for reporting maintenance and calibration results superseded by FWD-7
FWD-03 Deflection Monitoring Frequency Priorities and use of FWDs Owned by Other Agencies 16-Sep-93 Final Portions superseded by FWD-10
FWD-04 LTPP FWD Data Handling and Processing Procedures 28-Jan-94 Final Superseded by FWD-12
FWD-05 Special Provisions for Cold Weather FWD Testing 28-Jan-94 Final Superseded
FWD-06 Submission of FWD Maintenance Data to FHWA/LTPP Division Office 28-Jan-94 Final Superseded
FWD-07 Revised Procedures for Reporting of FWD Maintenance and Calibration Results 1-Feb-95 Final Supersedes portions of FWD-2
FWD-08 Guidelines for Maintenance and Overhauls of the LTPP FWDs 9-Sep-94 Final Superseded
FWD-09 Use of FWD Trailer Accessories Requiring AC Power 29-Mar-94 Final Superseded
FWD-10 Deflection Monitoring Frequencies and Priorities 1-Sep-94 Final Supersedes portions of FWD-3
FWD-11 Application of FWDCHECK Software 9-Sep-94 Final Superseded
FWD-12 LTPP FWD Data Handling and Processing Procedures 14-Mar-95 Final Supersedes FWD-4
FWD-13 FWD Problem Report (FWDPR) Form 1-Feb-95 Final Superseded
FWD-14 FWD Surface Temperature Measurements in Cold Weather 1-Feb-95 Final Superseded
FWD-15 Suspension of FWD Testing Due to Defective Sensors 12-Sep-95 Final Superseded
FWD-16 Cessation of FWD Testing at SPS-3 Projects 30-Jan-98 Final Superseded
FWD-17 FWD Temperature Sensor Checks 27-Apr-98 Final Superseded
FWD-18 Upgrade of FWDScan Software to Version 3.1 1-Jan-00 Final Superseded
FWD-19 Manual for FWD Testing in the Long Term Pavement Performance Study, Operational Field Guidelines, Version 3.0 27-Jan-00 Final Supersedes all but FWD-18
FWD-20 Implementation of the Manual for FWD Testing in the LTPP Study Operational Field Guidelines Version 3.1 31-Oct-00 Final Supersedes FWD-19
FWD-21 Upgrade of FWDScan Software to Version 3.2 9-Feb-00 Final Supersedes FWD-18
FWD-22 Upgrade of Edition 25.11 FWD Software to Aug 2000 Version 13-Sep-00 Final  
FWD-23 Implementation of FWD History File Conversion Software, FWDHST Version 1.0 11-Dec-00 Final  
FWD-24 Modification to LTPP FWD Geophone Holders 15-Feb-01 Final  
FWD-25 Upgrade of FWDScan Software to Version 3.30 20-Feb-01 Final Supersedes FWD-21
FWD-26 Upgrade of FWDCAL Software to Version 3.0 20-Feb-01 Final  
FWD-27 Thermal Gradient Temperature Measurements During Deflection Testing 9-Jun-03 Final  
FWD-28 Storage of LTPP FWD Raw (Peak & Time History) Data 9-Jul-03 Final  
FWD-29 Updated FWD Guidelines and Software 1-Apr-05 Final Supersedes FWD-20, -22, -23, -24, -25, -27 and -28
FWD-30 LTPP FWD Measurements Manual 4.1 and Calibration Procedure Updates 23-Nov-09 Final Supersedes FWD-29 (partial)
FWD-31 Modifications to LTPP FWD Test Procedures on SPS-2 Projects 14-Feb-11 Final  
FWD-32 Modifications to LTPP FWD Test Procedures 17-Nov-11 Final  
FWD-33 LTPP FWD Test Procedures When Idle 29-May-2012 Final Suppplements FWD-30
FWD-34 Update to Section 7.6.7 of Version 4.1 of LTPP Manual for Falling Weight Deflectometer Measurements 25-Jul-2012 Final Supplements FWD-30
FWD-35 Updated FWD Software 21-Jul-2015 Final Supersedes FWD-29(partial)
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