Impact of changes in profile measurement technology on QA testing of pavement smoothness : project summary.

Details

• Alternative Title:
  0-6610: Impact of changes in profile measurement technology on QA testing of pavement smoothness : project summary.
• Creators:
  Fernando, Emmanuel G. ; Walker, Roger S.
• Corporate Creators:
  University of Texas at Arlington ; Texas A&M Transportation Institute
• Contributors:
  Pete, Kevin
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Pavement Performance Quality Assurance Roughness Smoothness
• Publication/ Report Number:
  0-6610
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Texas A&M Transportation Institute
• Abstract:
  For quality assurance testing, the Texas Department of Transportation’s (TxDOT’s) Item 585 ride specification includes pay adjustment schedules that are tied to the average international roughness index (IRI), and a procedure to locate defects based on measured profiles. The acceptance criteria in Item 585 are based on measurements collected with traditional single-point lasers. Since its implementation, profilers with multi-point and wide-footprint lasers have become available. The impact of these new lasers on ride quality assurance tests needs to be investigated.
  
  To identify defects, Item 585 implements a methodology that checks the deviations between the average profile and its 25-ft moving average against a specified threshold. However, some districts have taken the additional step of using a bump rating panel to select the bumps and dips to be corrected based on the panel’s opinion of defect severity. A standard methodology needs to be developed to maintain consistency in ride quality assurance testing. This project:
  
  1. Established the impact of multi-point and wide-footprint lasers on the department’s implementation of its existing ride specifications (Phase I).
  
  2. Investigated the existing methodology for evaluating localized roughness (Phase II).
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:e97db646c7ace0104ad6c40eb3ad3709141f180de248d134375f31c5e3caba43
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/30767/dot_30767_DS1.pdf
• File Type:
  [PDF - 262.25 KB ]