I need to find out what size steel beam is required to replace a load bearing wall. I have 12' 2x12 floor joists over 1 room in the basement that is 11' wide and 14' 2x12 floor joists under a 13' room beside it in the basement. These joists overlap for about 2' with a wall under the center of the overlap. I want to remove this wall and install a 22' steel beam in its' place in order to make the space in the basement into one room also. The space above is a 24'x22' living room / dining room with a cathedral ceiling. The joists are 8' AFF so I am trying to keep the head clearance as great as possible between these rooms. The width of the beam is of little concern since I will have to drywall around the beam and an HVAC duct as well. Please tell me what size CFS I Beam I should use in this application.