00648203

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A procedure for calibration of falling weight deflectometers (FWDs) has been developed by the Strategic Highway Research Program (SHRP). This procedure was developed to reduce the systematic error, typically up to +/- 2% of the load and deflection readings, by calibrating FWDs to a reliable reference standard. The procedure was developed for use with all types of FWDs. To date it has mainly been used with Dynatest FWDs; however, it has also been used with the KUAB and the JILS FWDs. The development of the calibration procedures, the equipment associated with the reference calibration systems, the facility requirements and operational aspects, and the calibration protocols necessary to perform reference and relative calibration of FWDs are described. Four regional calibration stations have been established by SHRP in cooperation with the state highway agencies in Minnesota, Nevada, Pennsylvania, and Texas to calibrate SHRP FWDs and those of other highway agencies, institutions, and private concerns. The Long-Term Pavement Performance Division of FHWA is now maintaining the liaison with the state departments of transportation (DOTs). The results from a series of round robin tests with the four regional SHRP FWDs indicated that there was no significant difference in the calibration factors attributable to the locations where the FWDs were calibrated. For owners and operators of FWDs there is an advantage to having deflection results from calibrated FWDs, because the results from backcalculation are more accurate.

The proceedings of the Third International Conference on Managing Pavements is published in three volumes. Volumes 1 and 2, published prior to the conference, include papers to be presented at the conference. Volume 3, published after the conference, contains additional papers presented at the plenary and workshop sessions.

English

p. 315-325

1994

CONFERENCE PROCEEDINGS 1

Third International Conference on Managing Pavements

0309055024

Figures (3) ; Photos (7) ; References (2) ; Tables (2)

Accuracy; Backcalculation; Calibration; Conferences; Data files; Data quality; Deflection; Falling weight deflectometers; Pavement performance; Pavements; Reliability

Long-Term Pavement Performance Program; Strategic Highway Research Program

Data and Information Technology; Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Jun 7 1994 12:00AM

• APPLICATION OF MARKOV PROCESS TO PAVEMENT MANAGEMENT SYSTEMS AT NETWORK LEVEL
• ARIZONA AIRPORT PAVEMENT MANAGEMENT SYSTEM
• BURLINGTON ROAD INFRASTRUCTURE MANAGEMENT
• CASE STUDY OF BENEFITS ACHIEVED FROM IMPROVED MANAGEMENT OF PAVEMENT FACILITIES
• CONSIDERATIONS FOR DEVELOPING AND SUPPORTING APPROPRIATE PAVEMENT MANAGEMENT SOFTWARE FOR END USERS
• CONTRACT ROAD MAINTENANCE IN AUSTRALIA: A PILOT STUDY
• DESCRIPTION AND IMPLEMENTATION OF RO.MA. FOR URBAN ROAD AND HIGHWAY NETWORK MAINTENANCE
• DESIGN OF PROJECT SELECTION PROCEDURE BASED ON EXPERT SYSTEMS AND NETWORK OPTIMIZATION
• DEVELOPING A CUSTOMIZED PAVEMENT MANAGEMENT SYSTEM FOR PORT ORANGE, FLORIDA
• DEVELOPMENT OF EFFECTIVE MAINTENANCE STRATEGIES FOR MUNICIPALITIES IN THAILAND
• DEVELOPMENT OF PAVEMENT MAINTENANCE MANAGEMENT SYSTEM FOR A ROAD NETWORK
• ENHANCEMENTS TO THE NETWORK OPTIMIZATION SYSTEM
• FLORIDA AIRPORT SYSTEM PAVEMENT MANAGEMENT PROGRAM
• FUTURE DIRECTIONS AND NEED FOR INNOVATION IN PAVEMENT MANAGEMENT
• HOW DECISION MAKERS AT VARIOUS LEVELS USE OUTPUT FROM THE DANISH PAVEMENT MANAGEMENT SYSTEM, BELMAN
• IMPLEMENTATION OF PAVEMENT MANAGEMENT SYSTEMS TO OPTIMIZE WORK PROGRAMS FOR LOCAL GOVERNMENT AUTHORITIES IN AUSTRALIA
• INVESTIGATION INTO OBSERVATIONAL VARIATIONS IN PAVEMENT CONDITION SURVEY
• LONG-TERM COST-BENEFIT ANALYSIS OF PAVEMENT MANAGEMENT SYSTEM IMPLEMENTATION
• MAKING OPTIMIZATION PRACTICAL IN PAVEMENT MANAGEMENT SYSTEMS: LESSONS FROM LEADING-EDGE PROJECTS
• NETWORK PAVEMENT MANAGEMENT SYSTEM USING DYNAMIC PROGRAMMING: APPLICATION TO IOWA STATE INTERSTATE NETWORK
• NEW APPROACH TO DEFINING PAVEMENT MANAGEMENT IMPLEMENTATION STEPS
• NEW ZEALAND EXPERIENCE IN COMPARING MANUAL AND AUTOMATIC PAVEMENT CONDITION RATING SYSTEMS
• NORWEGIAN PUBLIC ROADS ADMINISTRATION: A COMPLETE PAVEMENT MANAGEMENT SYSTEM IN OPERATION
• OVERVIEW OF INSTITUTIONAL ISSUES IN PAVEMENT MANAGEMENT IMPLEMENTATION AND USE
• PAVEMENT MANAGEMENT AS PART OF STRATEGIC ROAD MANAGEMENT
• PAVEMENT MANAGEMENT SYSTEMS LEAD THE WAY FOR INFRASTRUCTURE MANAGEMENT SYSTEMS
• QUALITY STANDARDS FOR RELIABLE PAVEMENT ROUGHNESS EVALUATION
• REPEATABILITY AND REPRODUCIBILITY OF MANUAL PAVEMENT DISTRESS SURVEY METHODS
• ROAD SURFACE MANAGEMENT SYSTEM
• ROLE AND DEVELOPMENT OF A PAVEMENT CONSTRUCTION HISTORY DATA BASE WITHIN A PAVEMENT MANAGEMENT SYSTEM
• ROLE OF MPOS IN PAVEMENT MANAGEMENT
• ROLES FOR A REGIONAL TRANSPORTATION PLANNING AGENCY IN COUNTERING LOCAL AGENCY INSTITUTIONAL PROBLEMS IN ADOPTION AND USE OF PAVEMENT MANAGEMENT SYSTEMS
• STRATEGY FOR DEVELOPMENT AND IMPLEMENTATION OF ROAD MANAGEMENT SYSTEMS IN THE SOUTHERN AFRICA DEVELOPMENT COMMUNITY REGION
• USING INNOVATIVE MANAGEMENT TECHNIQUES IN IMPLEMENTING PAVEMENT MANAGEMENT SYSTEMS