AVare:
I think I'll plan to put windows, as you suggested, in the southeast recording room and the northwest recording room. (I will not put on in the control room, assuming that would be difficult to deal with for numerous reasons. In addition, phase one will be the control room so keeping the construction easier is desirable.)
Why are asking about the price of the sliding doors at this point?
My question about sliding glass doors was a bit premature. I agree that I should stay focused. Though a vague question, I thought someone might come back and say that they "tend to be three times as expensive as option B and twice as expensive as option C."
From what you describe about windows, it sounds like I am supposed to do it just as I imagined. Let me rephrase what I've come to understand. One window goes, as normal, in the concrete foundation. The other window goes in the wall of the respective studio room simply aligned with it. As such, no physical connection should be made between the two windows and two window panes.
So in your case you have two layers final: concrete outer wall, and (I am assuming) stud/gypsum board inner wall.
Your assumption is correct.
Here is some additional information you requested:
how loud is your new neighborhood
The neighborhood is very quiet (when I've been there). It's new. So there may be construction noise the first year for other houses being built. But it's location is otherwise very quiet.
what type of music you record
Most of the production will be classical music, which will have been recorded in a concert hall elsewhere. Occasionally I have musicians to the studio to do more conventional studio recordings. As such, I'd entertain the notion of recording a punk rock band in the future. I'm also a theatrical sound designer. The studio would function as grounds for producing sound effects. Many of the effects I often record are quiet in nature. so having good isolation would really improve the quality. As you can see, my studio's use varies quite a bit. But being geared up and ready for a five piece rock band is not my first priority. Sound designs and concert hall recording production are paramount.
how loud are the performers
See above. But also, I play drums, which as you all know are very loud. This is undoubtedly the loudest element.
how loud you want to monitor
Not ungodly loud. I'm very aware of and concerned about the health of my hearing. Though I'm not excellent at judging loudness, I would think that 110 dB would be a very rare occasion. I'd like to think that I do much mixing between 80 and 90 dB. Of course, I've never measured. Sorry for the unsure answer.
what times of day do want complete freedom from sound leakage
I'm not sure exactly why you're asking. Nor if you're concerned with sound coming in or sound going out of the studio. I often seem to mix from noon to midnight. Sessions are up to the talent. But I'd like to be able and ready to record them from 8:00 a.m. to 9:00 p.m. (The aforementioned hypothetical punk rock band? Those guys will want to record until 2:00 a.m. But I can draw the line.)
What else can I tell you? Again, the control room's importance is foremost. I hope to keep the project's budget at $6,000 (not including the $5,000 for the ten foot ceiling height). I haven't calculated what's realistic. But I'm well aware that I may be lucky to only get a control room with that budget. If this budget is totally unrealistic, I'll make compromises. Either I'll give more to the budget or compromise the quality of the room(s).
As far as the control room: I want to go the length to make it good (within the bounds of budget). From what I've read so far, I'm excited to plan such features as a sloped ceiling, bass traps as necessary, other acoustic insulation products, floating floor, floating walls (upon the floor?), cable troughs in the floor, a machine room/area outside the control room, a producer's couch and possibly desk.
Cadesigner:
If you are pouring independent slabs in a basement that define wall layouts and egress, that is among other things, regulated by codes, then this SHOULD have been part of the submittal in the first place.
Your point is well taken, cadesigner. I think at this time I will forgo fancy concrete work and float floors atop the simple concrete. Given that, do you still think I'm gambling, cadesigner? My thought is that despite the fact that I may have to redesign if my plans aren't approved, the only real gamble right now is the window placement I choose. (Window placement choice is described above).
Thanks guys!!
Grant