WWRC 90-27
Optimal Design of Highway Drainage Structures
Abstract
Hydraulic design of a bridge or culvert using a risk-based
approach is to choose among the alternatives the one
associated with the least total expected cost. In this
paper, the risk-based design procedure is applied to pipe
culvert design. The effect of the hydrologic uncertainties
such as sample size and type of distribution model on the
optimal culvert design parameters including design return
period and total expected cost are examined in this paper.
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