dozerduded6r
Member
Recently bought a 1970 Fruehauf low boy trailer. Running Historical Plates. I am in the process of Permently mounting , for a running display at truck and engine shows, 2 12000 pound engines. What are the rules on welding or bolting to the top side of the 2 main I beams. I recall no holes allowed to be drilled on the top I beam flange. Is this correct? Am I allowed to weld to the top of the I beam flange? Maybe I should use long U type Bolts instead. I have 5/8" chain maybe but cannot assure of being a grade 70. New at this type of transport.