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Originally Posted by locutus  Great work and thanks for the detailed thread!
Question: I noticed the booths were framed with staggered studs instead of independent. With all the real-estate and great isolation I found this suprising. Do you not expect to need the extra isolation in the booths or do you think you will get the higher isolation even with this technique? |
The isolation difference between double walls (room-in-room) and staggered studs is not very large, and the staggered studs provides us with the ability to fit the diagonal wall between the windows without interrupting the view. Remember, with the angles we have, the B<->C wall is about 15% wider where it hits the east-west wall than if we hit it straight in.
We're expecting just under STC 60 with our approach, vs. just over STC 60 with a room-in-room approach. It's good enough.
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Originally Posted by matskull Yeah I was expecting a "room in a room" approach.
Curious to hear more details about that too. |
Another detail is that the A<->B wall is straight in, so we can make it much thicker. We're doing resilient channel on one side, which also gives us great isolation. The doors in between are STC 51, so the wall is not the rate-limiting step.
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Originally Posted by LaLaFaV Are there separate slabs for the separate booths? |
Of course. Check back in the history (December 2008/January 2009) and you can see the foam inserts between all the slabs in the different rooms.