Hey everyone. I was wondering if you guys could help me with an engineering problem. I've found one other solution but it's going to cost me $16,000 to find out exactly what that solution is. I'd rather do it all myself. Here's the situation:

My house doesn't have a master bedroom. All our bedrooms are around 10 feet square. The wife and I are feeling a little cramped. We would like to combine two of our bedrooms into a single room. However, the wall(s) between the two bedrooms run perpendicular to the floor joists. The house is about 30 feet wide and the rooms in question are on the second story. There is only attic space above them.

First, is a support beam needed?

If so, is it possible to mount this beam above the joists in the attic.

If so, after I support the beam on the second story, what do I need to do to support the supports on the first story?

I look forward to hearing from you guys and to checking out the site. Looks like I'm apt to find some great ideas. Thanks.