This RM Bridge FAQ: Influence surfaces example has a .pdf document and .tcl files to show how users can: use the i nfluence surfaces for transversal analysis; use influence surfaces for the traffic load evaluation of wheel loads on grillages; …

Influence surfaces for consideration of laterally distributed loads, or two-dimensional load trains, can be defined in RM Bridge by defining and assembling a set of parallel influence lines. The Default is to have the input Surface as an empty variable…