I'd like to build a small loft, about 4' to 5' wide by 12' long, in a room with a high, vaulted ceiling. The room itself is about 11' x 12'. Looking at floor joist requirements, I'm thinking I could use 2 x 6s, at 12" OC, running in the 12' direction. These would attach to an exterior (i.e., load bearing) wall on one side, and a formerly-exterior wall on the other side (the room is an addition). So, it seems to me that it's basically an interior deck and so there shouldn't be any structural issues.
This is just at the "thinking out load" stage, so I was wondering if anybody had any thoughts.