I'm just trying to lay out some framing ideas for a dedicated HT in my basement. Home is a ranch, poured concrete foundation with a single steel beam down the middle.
The space for my HT room is ~15x24, with a foundation wall and beam running the long direction...joists obviously spanning the 15' (sorry). Top of the sill plate is 8'6" from concrete floor.
There are next to no mechanicals run between the joists in this area, so I could easily run new HT ceiling joists between them. However, there are mechanicals perpendicular, along both the beam and the foundation that impede my ability to frame a supporting wall without losing significant ceiling height or room width (if I move the walls inward to avoid mechanicals). What i'm left considering is a) running new HT ceiling joists from existing beam to existing foundation, b) running clips and channel across existing floor joists or c) both.
It seems that using the existing foundation would provide some isolation (similar to staggered stud construction), but I don't know how it would compare to using clips. My plan is to double stud wall everything but the wall along the foundation and 2 x 5/8 + GG everything. We'll see how the budget holds up when i get all of that priced out.
I did look around for a similar thread but hadn't seen this discussed in my search so far.