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The National Academies

NCHRP 12-78 [Final]

Evaluation of Load Rating by Load and Resistance Factor Rating

  Project Data
Research Agency: Michael Baker, Jr., Inc.
Principal Investigator: Mark Mlynarski
Effective Date: 3/3/2008
Completion Date: 3/18/2011

NCHRP Report 700 documents an analysis of 1,500 bridges that represent various material types and configurations using AASHTOWareTM VirtisĀ® to compare the load factor rating to load and resistance factor rating for both moment and shear induced by design vehicles, AASHTO legal loads, and eight additional permit/legal vehicles. The report includes recommended revisions to the AASHTO Manual for Bridge Evaluation based on a review of the analysis results. The material in this report will be of immediate interest to bridge engineers.

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