PAVEMENT INVESTMENT DECISION-MAKING AND MANAGEMENT SYSTEM

THERE ARE TWO MAIN PHASES TO THIS REPORT. THE FIRST PHASE IS CONCERNED WITH THE DEVELOPMENT OF INVESTMENT COST DATA USED IN COMPARING ALTERNATIVE FLEXIBLE PAVEMENT DESIGNS. AN ECONOMIC COST MODEL THAT USES THE PRESENT VALUE OF TOTAL COSTS OVER AN ANALYSIS OR SERVICE PERIOD IS THE BASIS FOR A TECHNIQUE OF GRAPHIC PRESENTATION OF TOTAL COSTS OF A DESIGN OVER A RANGE OF INITIAL LIVES AND WITH DIFFERENT SURFACING LIVES. A PAVEMENT DESIGN MODEL TOGETHER WITH AN OVERLAY DESIGN MODEL PROVIDES THE BACKGROUND BY WHICH COMPARABLE DESIGN STRATEGIES CAN BE WORKED OUT TO PROVIDE PAVEMENTS THAT WILL REMAIN ABOVE SELECTED SERVICEABILITY LIMITS OVER THE SERVICE OR ANALYSIS PERIOD. THE PAVEMENT DESIGN AND OVERLAY MODELS UTILIZE BENKELMAN BEAM ANNUAL MAXIMUM REBOUND MEASUREMENTS, AND SERVICEABILITY LEVELS OF THE PAVEMENT ARE REPRESENTED BY PRESENT PERFORMANCE RATINGS (PPR). THICKNESS- DEFLECTION CURVES FOR THE DIFFERENT SUBGRADE CONDITIONS ENCOUNTERED IN ONTARIO PROVINCE ARE DEVELOPED FROM EXTENSIVE FIELD EXPERIENCE. FIGURES ARE PRESENTED THAT INDICATE THE INFORMATION FLOWS NEEDED TO PRODUCE THE INVESTMENT DATA ON WHICH A PAVEMENT DECISION CAN BE BASED. THE SECOND PHASE OF THE REPORT CONSIDERS THE OTHER INFORMATION FLOWS THAT ARE NEEDED TO SUPPLEMENT THE FIRST PHASE. THESE CONSIST OF HIGHWAY GEOMETRICS, UNIT PRICES DETERMINATIONS, MAINTENANCE COSTS, AND CONSTRAINTS DUE TO SKID RESISTANCE, FUNDS AVAILABLE, AND OTHER CONSIDERATIONS. FOR A MANAGEMENT SYSTEM TO BE FULLY OPERATIVE, THE PAVEMENT MUST BE MONITORED AFTER IT IS CONSTRUCTED TO DETERMINE WHETHER ITS SUBSEQUENT BEHAVIOR AGREES WITH THE PRESCRIBED PAVEMENT STRATEGY. SUCH MONITORING IS IMPORTANT BECAUSE THE INFORMATION GATHERED CAN THEN BE USED TO ADJUST THE DESIGN MODELS SO THAT FUTURE DECISIONS WOULD BE BASED ON MORE ACCURATE PREDICTIONS. A PAVEMENT MANAGEMENT SYSTEM FLOW CHART SHOWS HOW THE TWO PHASES ARE INTERCONNECTED. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 173-194
  • Monograph Title: Pavement technology
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00206045
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: May 15 1973 12:00AM