This project investigated the relationship between predicted and measured girder cambers. For more than three years,
researchers collected camber data on girders of various depths and lengths from the time of strand release until
shipment to the job site.
Researchers used three camber prediction methods to compare with the measured values: PCI method, Branson's timestep
approach, and "CRACK" analysis program by Ghali et. al. The Branson time-step approach resulted in the closest
predictions to the measured cambers. The PCI method, although simple, gave reasonable long-term camber results
compared with the more detailed methods.
Woolf, Douglass; French, Catherine.
A Camber Study of MnDOT Prestressed Concrete I-Girders.
Minnesota Department of Transportation.
Retrieved from the University of Minnesota Digital Conservancy,
Content distributed via the University of Minnesota's Digital Conservancy may be subject to additional license and use restrictions applied by the depositor.