Heres a shetch of what is looks like best i could do gives you a better idea.http://files.engineering.com/getfile.aspx?folder=cf328091-f3c0-4f6e-bcb0-d90e80399e58&file=LIFT_FRAME.jpg
The joint has to be hollow to allow the forks to enter but the RHS sections either side will be butt welded to the end i just need to prove the open RHS in the middle will transfer the moment through its top and bottom plate so its sort of acting like a UB with a web section cut out the middle...
I have a 100x50x6 RHS with another splitting it in the middle all welded together making a "T"Shape but flat. This is for a lifting basket for a forklift and the RHS is for the Forks to slot into but i need to design the Frame for lift by crane also.
If there is a UDL along the top How do i go...