Attached is the problem i am trying to get to grips with along with my current line of understanding, The column seen is a side section slice from the design of a water tank. The column is designed to take the load of the water. The column is designed with 2 unequal angle 75x50x6 steel sections. These sections are bolted together using m10 bolts at the distances shown in the attachment. I am trying to find the forces acting on the bolts in order to confirm a m10 bolt is stong enough. Is my line of thought right here? Or am I missing something alltogether?