Weigh-in-motion (WIM) data for site-specific LRFR bridge load rating.

Details

• Creators:
  Uddin, Nasim ; Zhao, Hua ; Waldron, Christopher ; Dong, Li ; Greer, Amber
• Corporate Creators:
  University of Alabama at Birmingham. Dept. of Civil, Construction, and Environmental Engineering
• Corporate Contributors:
  University Transportation Center for Alabama
• Subject/TRT Terms:
  • Weigh in motion
  • Weigh in motion scales
  • Data collection
  • Analysis
  • Bridges
  • Testing
  • Evaluation
  • Loads
  • Live loads
  • Load factor
  More +
• Publication/ Report Number:
  FHWA/CA/OR-;UTCA Report 10204
• Resource Type:
  Tech Report
• Geographical Coverage:
  Alabama
• Edition:
  Final report; Jan. 1, 2010-June 30, 2011.
• Corporate Publisher:
  University Transportation Center for Alabama
• Abstract:
  The live load factors in the Load and Resistant Factor Rating (LRFR) Manual are based on load data from Ontario ; thought to be representative of traffic volumes nationwide. However, in accordance with the methodology for ; developing site-specific live load factors in the provisions of the LRFR Manual, live load factors for six locations in ; Alabama were developed using statistical weigh-in-motion (WIM) data. WIM data were collected from six sites in ; Alabama, including sites located on state and interstate routes. Data were collected throughout the year and in both ; travel directions to account for possible seasonal and directional variations. Different WIM data collection windows ; were also analyzed to determine the minimum required collection window to achieve statistically valid results. WIM ; records representing truck traffic at each WIM site were categorized based on weight in accordance with the Code of ; Alabama and Alabama Department of Transportation (ALDOT) practices. This analysis of WIM data in Alabama ; resulted in lower live load factors for each of the six sites than those presented in the LRFR Manual. It is ; recommended that ALDOT consider using these lower live load factors to more accurately represent the load rating of ; bridges across the state.
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• Format:
  PDF
• Funding:
  GR21710
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23864/dot_23864_DS1.pdf
• File Type:
  [PDF - 866.35 KB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:b86350157474761a386dcf238da71b60cf95e2b5ee93c16bf6c972bc9c0025e89ead3fa8e9df232a9acc362ad4de2c53c286186c8d3df3948182f4ff16a06649