Suspended Drywall Ceiling From I-joists In Basement?? - Building & Construction - Page 2 - DIY Chatroom Home Improvement Forum

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Old 06-14-2006, 11:20 PM   #16
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Originally Posted by Babs
How about this alternative.. I threw an idea into sketchup here..

Basically, using hat channel (drywall nailer). But instead of nailing to the joists, which can't be done due to the piping suspended under, this idea drops the channel from 2x4's suspended from web stiffeners on the Trus joists. I think this is what robertcdf was pointing to in his above post.

Is it Kosher? Structurally ok?
I joists are 16" oc and I spaced the channel 24 OC though 16 would be easy enough and could hang to every other vs every third joist if needed.

this is the route i would be thinking about, on 16"center,gives enough room for batt insul for souind controll as well. the thing guy's are doing up here in theatre room's is the fibre optic ceiling and they charge large for it, but basically all it is are a bunch of fibre optic wire poked through the ceiling and ran to a light with a rotating disk with different colours that transmits through the fibre looks kinda cool but is like 3k to have it done but the kit is only $350.00 i will ask my electrition buddy and find a pic 4u
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Old 06-15-2006, 08:31 AM   #17
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Oh yeah I've seen a bunch of those fiberoptic setups.. I imagine hard to do with drywall though.. However, I've seen DIY star light ceilings with grid tiles easy enough though. Looks pretty cool but man it's a lot of hours of work but you're right the parts themselves aren't all that expensive.. it's all labor hours.

I posted this same idea over at AVS forum (a home theater forum) and one reply questioned the structural strength of the webbing in the I-joists.. He wasn't sure if you could mount to the web like this.

What do you think?

From looking at Trus joists specs, I'd think you could apply a "web stiffener" on each side of the webbing, then hang the 2x4 nailer from that pretty easy enough with enough strength. I'd probably stagger the side of the joist I'd attach to from each run on that joist though just to equal out any torsional stress pulling on one side though.

I would think this would be a better method than doing any mounting to the flanges as that is where the I-joists strength is. ??
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Old 01-02-2011, 11:49 PM   #18
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sound-proofing the home theater room

what i'd do.... go with carrying channel and hat track... install safe and sound roxall in every opening... before putting up the drywall, install a layer of "heavy" weight poly and tape the joints (this will actually eat up about 7 or 8% of the sound)... one layer of 5/8" drywall... tape that.... resilient sound-bar strapping... and two more layers of 5/8" board.. you will need hanger wires on your carrying channel a "minimum" of every 12 square feet but it will carry the weight... and provided the duct work openings and any other openings as well as your walls, doors (solid core) and windows are sealed, then, you should be able to put a rock band down there with some considerable success..
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