Calculation error

hello. please help me to find the problem.
i wanted to calculate this model of bridge and i alway have this response when computing. i don’t know what is not going on in my model.

Hello Simon

Have you checked the cross-sections of your system (> Assignation > Sections)?
Have you checked the Report Browser (Publier) for a more detailed description of the error message?

Without any further information I can’t give you any advise.
Perhaps the online documentation helps: > Infocenter - Overview > Documentation - Analysis + Design for Revit

Best regards
Frederik Höller
Your SOFiSTiK Support Team

YES ! you are wrignt it was about cross section . thank you so much.