I have a two span prestressed concrete box beam bridge that I am working on. The model was built and sent to LBC and the superstructure design is complete. I now want to verify bottom of beam elevations etc. I have the following questions.
1. The values that are being read from LBC for camber do not appear to match the values that LBC is providing during design.
2. Is camber used in calculating the bottom of beam elevations. It seems that no matter what I enter in OBM for Camber, the output report gives me a difference between Final Deck Elevation and Girder Top Elevation of 6" which is the thickness of the deck plus the haunch. It appears that camber is completely being ignored?
Thank you in advance for your help.
Hello Peter, OBM currently does not automatically read in the camber values from LBC girder design and redraw the beams in OBM. The bearing elevations in OBM only consider the user input values for haunch at start and end at the bearing lines. The beams are then drawn straight and do not model the camber.