I am currently load rating a steel truss bridge. I am using the LARS software to load rate the truss, floor beams, and stringers. I am also load rating the gusset plates by other means. I would like to use the member forces at the panel points from the LARS output for different combinations of forces acting on the plates. However, I do not understand what is being shown in the output table. I can match a few of the forces as maximum forces in a given member, but I can not figure out where the other forces come from. I thought the table might be showing concurrent forces for a given maximum force in a member, but I discovered that equilibrium is not met by the forces. Therefore, they are not concurrent. Could someone explain to me what is being shown in this ouptut table? If they are suppose to be concurrent forces, how should the table be read?
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