Edit: Moving this over to my Design Thread to keep everything in one place:VTHT 2.o - Planning a Theater & Whole House Build
OK I may be over thinking this but here we go. Dimensions have changed slightly from initial posts so I am considering a room-within-a-room
The current sound containment plan would include
- Stud walls all the way around the theater placed 1/2" - 1" away from all surrounding walls and ending 2" below the level of the floor joists above.
- Ceiling Joists interleaved with the floor joists above resting on the decoupled stud walls about 2" below the level of the floor joists
- OSB > Green Glue > Drywall on all interior surfaces giving me my "shell". All soffits and columns will be built inside this shell.
- All lighting, outlet boxes, in-wall speakers and low voltage penetrations will be in the soffit or columns inside of the shell.
- Penetrations through the shell will include, HVAC Supply, HVAC Return, Main Door and low voltage/electrical wiring.
I will include the EQ room as part of the sound containment envelope.
SketchUp Top Anfled
In the last 2 pics I am trying to detail the floor ledger attachment methods and over all ICF construction because the details are different than traditional construction. The basement and both levels above are ICF construction. 8" of concrete on the basement level and 6" on the 1st and 2nd floors surrounded by 2.5" of foam on each side. The flanking paths are different that traditional construction.
Decoupling the ceiling makes sense.
Decoupling the rear wall and the part of the side walls not adjacent to the foundation makes since.
Am I really getting any benefit from placing decoupled walls in front of my foundation walls?
What I am trying to figure out is am I wasting 8" of room width for very little gain?
What do you think of the current plan overall? Any suggestions?