Review of PCR methodology : executive summary.

Details

• Alternative Title:
  Review of pavement condition rating methodology
• Creators:
  Saraf, Chhote
• Corporate Creators:
  Resource International, Inc.
• Corporate Contributors:
  Ohio. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Composite Pavements Continuously Reinforced Concrete Pavements Flexible Pavements Inspection Pavement Joints Pavements Pavements--Evaluation Pavements--Research--Ohio
• Publication/ Report Number:
  FHWA/OH-99/001
• Resource Type:
  Tech Report
• Geographical Coverage:
  Ohio
• Edition:
  Executive summary.
• Corporate Publisher:
  Resource International
• Abstract:
  This study was conducted to review the Pavement Condition Rating (peR)
  
  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 peR 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 peR 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 wellas 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.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:0980525badfdd5b23ef58d32f98c1fe794907b944647d840dcbc8ed337f03bc9
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17684/dot_17684_DS1.pdf
• File Type:
  [PDF - 81.77 KB ]