MDOT has experienced under-camber prestressed concrete girders recently on several projects that have led to construction delays and/or increased construction costs. The need to address current practices for estimating beam camber were addressed through; literature search, survey of other State DOT current practices, historic material and beam camber data provided by the Mississippi Concrete Girder Manufacturers, and camber estimate calculations for items that influence beam camber. The research findings included improvements to; better understanding of beam camber, material property versus strength expectation, ride smoothness, increased Industry awareness, advancing MDOT’s current practices, enhancing MDOT’s database of historic material and beam camber information, reducing design and/or functional modifications to MDOT projects, minimizing added project and infrastructure costs, and reducing delays during construction.
Many medium and long precast prestressed concrete girders have camber less than the design values. This discrepancy between the design and the actual ...
The Texas Department of Transportation (TxDOT) is currently designing typical highway bridge structures as simply supported using standard precast, pr...
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