I'm trying to determine how many RSIC-DC04 I need to support a 8x8 wall. According to PAC the max load is 36 lbs per clip. I'm trying to approximate the weight of a 8x8 wall with 24 OC studs, 2 layers of 5/8" drywall with GG inbetween.

I found a typical 5/8" drywall weights 73.6 lbs so 2 layers = 147.2 lbs
A typical 2x4 8 foot long weights 14 lb (if my calc are correct) so 6 2x4x8 = 84 lbs
Some weight for the GG, 2 tubes at 29 oz = 1.8 lbs so 4 tubes for a 8x8 wall = 7.25 lbs
Total lbs for a 8x8 wall = 238 lbs

So if I were to hang the wall from the floor joist I would need 238/36 = 6.6 RSIC-DC04 clips. But realistically the wall will be supported by the basement floor so I'm assuming 3 or 4 every 8x8 wall would be sufficent?

Any ideas or flaws in my theory?

Thanks,
Brent

Edit: Original post referenced RSIC-1 EXT04 when I meant RSIC-DC04.

Is Green Glue necessary when using Isolation clips & hat channel?

Try this link and download the pdf. 'How to Install' http://www.soundprooffoam.com/sound-isolation-system.html

Is Green Glue necessary when using Isolation clips & hat channel?

Try this link and download the pdf. 'How to Install' http://www.soundprooffoam.com/sound-isolation-system.html


For the wall I am not going to use the Isolation clips and hat channel, the RSIC-DC04 are to isolate the walls from the floor joist.

For the ceiling I was planning on Isolation clips, hat channel, 2 layers of 5/8", and green glue.

Have you asked PAC? I have an old eMail somewhere that they told me every 2 feet.

Tom