One of my customers called this mourning,their heavy haul truck took out part of a rail road crossing! Truck loaded with a cat345 trackhoe,boom laid down in between the main center beams of the trailer,well when he caught the track doing 30 mph it stopped the truck almost in its tracks.Well the backhoe slid forward on the trailer ended up on top of 5th wheel,never slid off,but the boom took out 5 crossmembers between the main beams.Need to replace the bent crossmembers,This is probably t-100 steel the main beams
I'm thinking cut out old ones ,preheat main beams and weld back new rectangle tubing 6x12x 1/4 wall back in with 7018. Anybody out there have any experience with these heavy haul trailers?