more ductwork!
ductwork wasn't completed today, but it's damn close. it would've been done today were it not for the fact that one of the guys got stung by a yellow jacket or 5 (long story), is allergic to bee stings, didn't have his medicine on him, and ended up having to go to the hospital (he's ok now). that left just one guy to do stuff, and much of the remaining work is 2-man material.
kevin and i spent a bunch of time talking about my concerns that several of the supply runs didn't have enough turns in them to adequatley attenuate any air noise which might be inclined to pass into the duct. each duct run is supposed to have at least 180 degrees' worth of turns in order to deal with sound waves most effectively. this isn't all that hard to accomplish in the main studio, where i tried to leave room behind the walls for exactly this purpose. however, for the iso booths things are more of a pain to deal with, there isn't as much space, and the situation with the joists above that area is....well, there's a helluva lot of joists there.
we started toying around ideas for the storage/iso room first, since that looked like it might be easier. after a bunch of experimentation with all sorts of different elbows, flex duct, and oval duct, kevin finally got the idea to bring the supply down from the ceiling with flex duct, run it inside the bulkhead and up into the next ceiling bay, then over the steel beam, past the rest of the bulkhead, and finally dropping down into the room. here's a picture from the ground looking up to better explain:
i'm insanely happy we got this to work. i was beginning to worry that i'd have to settle for some less-than-ideal compromise. which would still be way better than any regular ol' ductwork installation, but i'm really trying to make this the best i can before closing up the walls.
the supply coming into the vox booth is going to get a similar treatment, but that's going to require expanding the bulkhead a bit to give adequate room to the flex duct. they're gonna pick up with that tomorrow.
here's a shot of the storage/iso room return coming in from behind the front wall of the main room and then dropping down between the main and storage rooms:
here's an interesting picture of where the supply that runs to the mixing area comes out of the furnace. it's the insulated duct line. basically it comes out of the furnace and makes a complete U-turn up and back over the furnace and into the studio. that particular supply register is going to come out in the middle of the ceiling, so that was the only place we could get a series of good bends in.
