I am planning to finish an attic space. I want to eliminate one 4x4 wood column in a line. The column is 8 ft from a load bearing wall and 12 ft from another column (which will remain). The column supports twin 2x10s with a 2x6 joists and 2x6 rafters in a simple low pitch roof above. I can get at the twin 2x10s so I could bolt a microlam or even steel to reinforce this. How can I find out what must be added to eliminate the column? Thanks a bunch!