I am trying to define a composite section in my bridge. Thus, I am using the generic shear connector type. When I click the Add button, the following message pops out: "Encountered an improper argument". Anyone know why? Is this something I should…

I can't find any place in LBS that asks for ADTT. So my conclusion would be that it is always using Fatigue I. However my ADTT is low enough that I should be using Fatigue II according to AASHTO 6.10.10.2, but I don't see anywhere that would tell LBS…