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In Reply to: If one HAS to build a raised house... posted by marc g. on May 9, 2007 at 09:07:44:
Joists 16" on center (many building codes require 48" and some better builders upgrade to 24"), 2x6 tongue and groove planking laid accross (perpendicular) to the joists, 3/4" plywood sub floor, 3/4 inch T&G hardwood (oak is great). I placed piers 3' apart, but you just can't put in too many - its cheap. You can 'jump' on this floor and hardly get the needle to jump out of the groove. Highly recommended.If you are using drywall you might consider double thickness in you listening room. And, although it might not have any effect on acoustics, I like 2x6 framing on all exterior walls, weight bearing walls, and for consistency walls between rooms (not closets etc). Cost a bit more, but it contributes to stability of your home in general.
Follow Ups:
It is definitely overkill.
One thing I might point out though is that no code that i am familiar with will allow 48" o.c. for floor joists
Life has lots of trials and lots of music to help us through them.
In comparison to the thousands that a a lot of folks spend for isolation/acoustic treatments, not to mention equipment? If we can be that anal about quality equipment the difference in lumber costs and a bit of extra labor is minimal! :-)BTW, I built my house 15 years ago, perhaps the code has changed since, but at that time (where I live) it was 48" - and titled "How to build a wood trampoline". :-)
Fifteen yrs ago they were about half of what they are today. Building prices start at $100 sf. now. Fifteen yrs ago that price was about $55. Thats in fly over country. I'm sure the prices are higher in other parts of the country, however the price increases are about the same in percentage.
I've been in building business for over 35yrs and I have never seen a 48" o.c. on a floor unless it was a poured concrete.
Life has lots of trials and lots of music to help us through them.
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