On a project, we recently had the client add a span to make a four-span plate girder bridge into a five-span plate girder bridge. After having issues trying to add the span to the existing model with the file not recognize the new sixth SupportLine, we started re-creating the model. In the new model OBM file, we we able to define the deck and six support lines for the five spans, however the beam layout refuses to place beams in the final span, claiming the beams are "infringes on the right edge of the deck" even if I say there's a 10' overhang beyond the right girder. This error appears as soon as you click for more than 2 beams in the Beam Layout window. This bridge is now a three-span continuous with two simple spans for steel design. Does the program have limitations for the number of spans supported or is there a way to get beyond the beam layout point?
Daniel, Please file a service ticket for more immediate assistance. There are no limits to number of spans in OBM.
The right beam is a negative spacing from the right edge of the deck. Seems counter-intuitive but that’s the solution Bentley gave me after sending in the model over the secure file transfer.
Think of it as you are looking at a typical section of the deck. Since the right most beam is placed relative to the right edge of deck, it is to the left of the right edge of deck so it is in the negative X direction, hence the negative offset value.
Answer Verified By: MarcosBeier