I have a removable gooseneck semi-trailer (RGN) I am going to stiffen it to hold a higher capacity. 30 ton to 45 ton. This hauls large equipment. (yellow iron) I know from experience what to use and how to do it. Is there some one here that can do the calculations and make a drawing of the structure to determine the approximate load capacity? Both over all and concentrated capacities. This is a paid proposition with required results. Not like the guy I paid $1500 to for a PCB prototype and has never been heard of or seen again. If he blew himself up with a bomb in Afghanistan then I will forgive him.