Pitt | Swanson Engineering
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This design procedure was conducted by Dr. Julie M. Vandenbossche's group at the Department of Civil and Enviromental Engineering, University of Pittsburgh, under cosponsorship of  the Iowa, Kansas, Minnesota, Mississippi, Missouri, New York, North Carolina, Pennsylvania, South Dakota and Texas Departments of Transportation. These states are all participating in the FHWA Pooled Fund Study TPF 5-165 under which this work was performed.