United States Department of Transportation
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Culvert Rating Guide, Second Edition
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2017-10-01
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[PDF-12.02 MB]
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Edition:Second Edition
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NTL Classification:NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures
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Abstract:The purpose of this Culvert Rating Guide is to present a clear, repeatable and valid procedure for Texas Department of Transportation (TxDOT) engineers and their consultants to use for load rating culverts in the TxDOT roadway system. Stated another way, the Culvert Rating Guide is intended to clarify policy assumptions, minimize procedural inconsistencies and resolve analytical variances associated with load rating which – left unattended – have been shown to accumulate and coalesce into a “disconnect” between observed structure performance and calculated load rating values. Fundamentally this Guide is about helping TxDOT achieve an acceptable level of culvert load rating accuracy and precision that avoids unnecessary restrictions on commerce such as may result from, on the one hand, unfounded (high) load ratings that lead to premature structure deterioration or failure or, on the other hand, unwarranted (low) ratings that lead to unnecessary structure replacements or upgrades.
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