Join Date: Dec 2010
Location: Minneapolis, MN
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 91 Post(s)
I posted this in my build thread, but haven't got any replies on it, so I'll try here.
I would really love some feedback on the clips/channel layout I came up with below. I planned ahead with my soundproof boxes and was able to get my atmos backer boxes and all (except one HVAC penetration in the AV closet) to land between the hat channel, so the channel lays out pretty smooth across the room.
However, my joists are 19.2" on center engineered 2x4 trusses. That kind of blows up up the standard 24" x 48" staggered clip spacing — unless I went crazy with 2x4 blocking. Furthermore, due to the atmos backers and 4 big HVAC joist silencers, there are several spots I can't even do blocking, so when I tried doing a 48" spaced layout in sketchup it looked like a mess. Instead, using a 24" x 38.4" staggered spacing is a lot cleaner. The clip count isn't that much more either (just a 10% difference).
With a 48" pattern, I get 89 clips, with 64 of them requiring blocking between the joists
With a 38.4" pattern, I get 97 clips, with only 25 of them requiring blocking (all of which are end clips where I don't have joists)
The ceiling area is 410 square feet, which is about 1800 lbs of 5x8" DD (plus whatever GG weighs). That puts 18.5 lbs on each clip.
Does this look like a good clip layout for the room, or am I missing something?