Review of PCR methodology.

Details

• Alternative Title:
  Review of pavement condition rating methodology
• Creators:
  Saraf, Chhote L.
• Corporate Creators:
  Resource International, Inc.
• Corporate Contributors:
  Ohio. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Pavements
  • Inspection
  • Flexible pavements
  • Composite pavements
  • Continuously reinforced concrete pavements
  • Pavement joints
  • Pavements--Evaluation
  • Pavements--Research--Ohio
• Publication/ Report Number:
  FHWA/OH-99/001
• Resource Type:
  Tech Report
• Geographical Coverage:
  Ohio
• Edition:
  Final report.
• Corporate Publisher:
  Resource International
• Abstract:
  This study was conducted to review the Pavement Condition Rating (PCR) ; methodology currently used by the Ohio DOT. The results of the literature search in this ; connection indicated that many Highway agencies use a similar methodology to rate their ; pavements. However, due to the linear nature of the current PCR model, it is deficient in ; certain respects. ; An analysis of the PCR data, which was collected by the ODOT in the past 11 years ; (1985-95), indicated that there were some distresses among each type of pavement ; (currently there are four types of pavements: Flexible, Composite, Jointed Concrete and ; Continuously Reinforced Concrete or CRCP) which were rarely observed in the past. The ; reasons for such occurrences and the use of this information to enhance the current ; system are discussed in the report. ; A statistical method known as: Classification Tree, was used to analyze the ; available PCR and maintenance actions data for the purpose of (1) Rating the pavements, ; and (2) assigning a maintenance and/or rehabilitation (M&R) action when distresses of the ; pavement-are known. The results of this analysis indicated that due to non-linear nature ; of pavement rating, this model was able to assess the pavement condition better than the ; current linear model of estimating the PCR. ; An expert opinion survey was designed and conducted to collect data on the ; pavement ratings and recommended M&R actions. Several pavements of each pavement ; type were included in this survey. A combination of "Classification Tree" and "Proportional Odds Model" was used to analyze the data and develop new weights for the pavement ; distresses of each type of pavement. The PCR values of individual pavement sections, an ; entire route as well as the entire roadway network were calculated. from new and old ; distress weights and the results were compared. These comparisons indicated that the ; Pavement Condition Ratings obtained from the new weights were able to delineate certain ; pavement conditions better than the old weights and the pavement Ratings were not ; dependent upon the type of pavement when new distress weights were used. ; Statistical analysis of the PCR data collected by the ODOT for the year 1996 was ; performed to determine a suitable sample size which can be used to survey the NHS ; network for collecting the PCR data of the network for Pavement Management purposes ; and selecting the pavements for inclusion in the annual M&R program of the ODOT. If the ; recommended procedure is implemented, it can save some time in the annual PCR data ; collection. ; The report contains recommendations for: (1) revising-the list of distresses of each ; pavement type, (2) developing a non-linear model to assess the pavement condition Rating ; and M&R needs of any given pavement, (3) a suitable sampling procedure to survey the ; network, and (4) revising the definitions of some distresses of each pavement type.
  More +
• Format:
  PDF
• Funding:
  State Job. No. 14638(0)
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17906/dot_17906_DS1.pdf
• File Type:
  [PDF - 6.97 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:6fe403791f817e08d92a24a55fef1a95b828bd2f15ae33eb5a0d1ba18e7eca83