Assessment of ODOT culvert load rating spreadsheets for use in Michigan.
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2013-01-01
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Abstract:The project “Assessment of ODOT Culvert Load Rating Spreadsheets for use in Michigan” was
a short time-frame project funded by the Michigan Department of Transportation (MDOT)
through the Center for Structural Durability (CSD) at Michigan Tech. The objective of the
project was to assess existing spreadsheets developed by the Ohio Department of Transportation
(ODOT) for performing load rating calculations on corrugated metal pipe culverts using both
Load Factor Rating (LFR) and Load and Resistance Factor Rating (LRFR) methods. The
spreadsheets were assessed for their adherence to reference guides and then modified as required
to function with Michigan legal and overload truck descriptions. The project did not investigate
the suitability of the technical process used in the ODOT spreadsheets to produce reasonable
load rating calculations. Significant structural and programing changes to the spreadsheets were
considered outside the project scope. Details on the work performed for this project are
described in the following sections of the report.
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