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Assessment of Bridges with an Ohio Legal Load Rating Factor Greater than 1.35 to Meet Specialized Hauling Vehicle Requirements in Ohio

Ahmad, Mubashshir
http://orcid.org/0000-0002-0126-8207
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501750643087275

Abstract Details

2017, Master of Science, University of Toledo, Civil Engineering.
NCHRP Report 575 established that typical AASHTO Type 3, 3-S2, and 3-3 legal trucks do not represent all legal loads. Single unit trucks with heavy axle loads, referred to as Specialized Hauling Vehicles (SHVs) create higher force effects for bridges with shorter spans or elements with shorter load lengths, such as transverse floor beams than the typical AASHTO loads. Per the FHWA memo dated November 15, 2013, state Departments of Transportation (DOTs) are required to incorporate SHVs in their load rating scheme and post bridges, if necessary. ODOT uses its own set of legal trucks (2F1, 3F1, 4F1 and 5C1) in place of AASHTO Type 3, 3-S2, and 3-3 legal trucks for load rating. A comparison of moments produced by the AASHTO SHVs showed an increase of up to 25% over the Ohio legal trucks. To reduce the population of total bridges to be load rated for SHVs, it was hypothesized that Ohio bridges with a span of less than 200 feet and rating factor (RF) greater than or equal to 1.35 for Ohio legal loads will have a load rating factor greater than 1.00 under the new SHV loads. This thesis presents the research work done to assist ODOT in statistically demonstrating the abovementioned hypothesis. A sample of bridges (approximately 200) iv was analyzed for SHV loads. The sample includes a variety of bridge types, spans, and skews to cover the more common bridges. Data on the bridges such as the drawings, inspection reports, Bridge Analysis and Rating System (BARS) files and Bridge Load Rating Summary Reports were used as input. AASHTOWare Bridge Rating (BrR) software was used to perform the load ratings at Inventory and Operating level for HS20/HL93, Ohio Legal loads, and AASHTO SHVs for the current field conditions. Sampling of bridges, analytical processes, application of AASHTOWare BrR software, statistical results, and conclusions are discussed herein. All the bridges in the sample analyzed for SHV loads were found to satisfy the hypothesis.
Douglas Nims (Committee Chair)
Victor Hunt (Committee Member)
Hu Liangbo (Committee Member)
108 p.
Civil Engineering
Bridges, Load Rating, SHV, Special Hauling Vehicles

Recommended Citations

Citations

  • Ahmad, M. (2017). Assessment of Bridges with an Ohio Legal Load Rating Factor Greater than 1.35 to Meet Specialized Hauling Vehicle Requirements in Ohio [Master's thesis, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501750643087275

    APA Style (7th edition)

  • Ahmad, Mubashshir. Assessment of Bridges with an Ohio Legal Load Rating Factor Greater than 1.35 to Meet Specialized Hauling Vehicle Requirements in Ohio. 2017. University of Toledo, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501750643087275.

    MLA Style (8th edition)

  • Ahmad, Mubashshir. "Assessment of Bridges with an Ohio Legal Load Rating Factor Greater than 1.35 to Meet Specialized Hauling Vehicle Requirements in Ohio." Master's thesis, University of Toledo, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1501750643087275

    Chicago Manual of Style (17th edition)

toledo1501750643087275
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© 2017, some rights reserved.Creative Commons License Assessment of Bridges with an Ohio Legal Load Rating Factor Greater than 1.35 to Meet Specialized Hauling Vehicle Requirements in Ohio by Mubashshir Ahmad is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Toledo and OhioLINK.