Wiip AmToDxf - Revit Structure to Analytical Model Via DXF
"Revit Structure can export an analytical model in a DXF file, but the result needs to be corrected before using it for calculations. Each beam is split into 3 parts (begin, middle, end) during the built-in export mechanism, as shown in the display.
"This utility exports each beam as a single line.
"It also splits the beams at each intersection, so we get a node where we need it. Each beam size is associated with a color, and layers are created for each element category."