Wall anchor? (was:Will this be a problem? (triple/quad leaf)

I am planning to build a practice space and studio and using double stud contruction for both. Will this setup be a probelm? Double stud wall - 18" air gap - double stud wall. The walls will have (2) 5/8" drywall on both sides with GG on the inside walls, 3" airgap, and R13. These are being built on a concrete slab floor like you would find in a warehouse. Thanks for any help! Will this cause a problem? is the 18" airgap enough to negate the triple/quad leaf effect?

There will still be the multiple effect. It will not be a significant proble, but will be cost ineffective. Why such a construction? A double stud wall with 4 layers of gyprock on each side and at least one of Green Glue in each leaf will yield excellent results. Andre

I think it might be more of a problem than my good friend is expressing........ and also have to ask the same question he did - Why do you want to build something that you already know is a problem? Why not just put the material where it belongs and do it right the first time? Rod

Thanks for the input! I do want to do it right the first time and would not like to waste money! I want to build a "superwall" between the practice studio and the live room for the recording studio. I'm racking my brain trying to come up with a solution to offer the most sound reduction. I'm contemplating the following idea: a double stud wall, MAM, the one side of the mass being double drywall, and other mass being double drywall-concrete block-drywall sanwiched together to make my "superwall"---is this a crazy idea/would something else work better? Crude picture attached.

That will be good. Instead of the outer studs on the concrete, attach the drywall with adhesive/plaster etc, or just use plaster etc. What are you trying to achieve? Give details on the design (layout) and how much isolation you need. It feels like good design will save money. Andre

I've attached a picture of the layout. This is an old drawing that does not have my "superwall" drawn in, but I did shade the areas black (between the practice studios and the control/live room) where I would like to put it. My goal is to reduce, as much as possible, noise transferred from the practice studios into the live room and control room. I'm also concerned about flanking noise between practice studio 2 and the live room. The wall on the right side of the drawing is a shared concrete wall. My original plan was to anchor the inside shell of the practice studio to the concrete wall, but now I'm rethinking that. It may be better to build a wall there so I have a double leaf with the concrete wall. Flanking noise between Practice Studio 1 and the control room should not be a problem, although it looks like it, the wall is not a shared wall. The practice room walls are all double stud construction with a 3" air gap.

The rehearsal studio's inside walls will be separate and not touching the existing concrete wall. Both the inner and outer walls will be anchored to the slab. My question is: Would there be any benefit to isolating the outer shell wall when anchoring it to the existing concrete wall?