spo307
Gold Member
I need to build a bridge to span a stream 34', tractor with back hoe weights #7500, so I figure 10k lb bridge, the deck i would probably use 3' x 10' subway grating either steel or galvanized. the easiest thing to do would be get a 40' flat bed trailer ( full rails front to back ) take the axles off and 5th wheel, drop into place with the 200 excavator and be done. i have seen flat beds for 3K, the i thought 2-12" I beams, with the decking on it, or 3 8" beams, anyone know span and loads for I beams, i am a welder just don't know the tech stuff, I know there's a table for calculating it on the web but again, i took a small bus to school. thanks Dennis