I am modeling a small steel bridge and the surface mesh runsbut the volume mesh fails. It seems to me that at locations wheremultiple sweept paths intersect, and protrude into each other, isthe cause of the failure.

if so I have tryed to extrude a cut along the inside fo the tubs ineffort remove the parts that intersect, But this does not seem likethe proper way to fix the problem.

SolidworksSimulation