Hi Peter,

I've assigned my beams as RHS 120x90mm. There are 50+ with pressures of 1.43kN/m2. They carry the line load to a central keel section which is a shell element (I'm trying to design a keel for a ship display). 

I think I may be missing something in how the beams which sit on top of the keel transfer their loads to the keel section below them. So far as I can see the geometry is ok. I have attached a screenshot to try to explain myself better. The keel is supported under the keel where a rib is located for now.