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Studio in Paris
Originally posted at johnlsayers.com, topic 10694.
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if you divide the space on the 2 side-to-side walls, i'd just leave them in place since they probably serve some structural purpose. otherwise it looks like a pretty cool place to have a studio. I'd also leave as many doors and windows as possible just to keep as much light and access as possible.
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"The ATM floor is a wooden one. There is a 1,2m gap under it before the lower level. Since i don't think i can isolate it properly, i will take it off & go 1 meter deep. " /quote
I'm wondering what kind of "hornets nest" will be opened in doing this?
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What I am wondering is..if there is an apartment below you, then you are opening up, most likely, the area that has wiring, venting, etc, your floor and the lower unit ceiling are sharing(?) the cavity so it should be interesting.
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There is much involved with sound isolation for studios. The first thing is single number ratings like STC and the European Rw are not really good for music because they do not take into account the low frequencies, which are the hardest to control, and are strongest in music. For music, most designers look at how much sound is let through the partition (general word for walls, roofs, floors etc.) at different frequencies. This is referred to as the Transmission Loss (TL). Graphs are usually made up to show the TL versus frequency.
A typical TL graph is attached, taken from NRC IR 761, which has test results for 151 different gypsum board walls. The graph is for a double stud wall with 16 mm drywall on one side and 2 layers on the other, with insulation in between.
Andre
Here is a quick read on sound transmission class http://en.wikipedia.org/wiki/Sound_transmission_class Note: Doubling the mass typically adds 5-6 points to the stc, also, as a reference, higher stc numbers are preferred. It's in the quick read.Since doubling a mass should double the STC, is that mean than having 2 standard stud wall on 2 independent bases (STC 28x2) will have the same STC than the "Staggered stud wall construction with 3 layers" (STC 56)? Basing on insulation adds STC 5 to each layer, if i double it (1 insulation / wall) will i get STC 10?
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At the risk of being redundant...you and your crew have knowledge of what it is you are doing, is that correct?
I know enough about building boats to sink one but some of what you are removing looks to be, by design, the horizontal structure that maintains the spread on this structure and inhibits compression from external forces.
But you guys are on this right?
Still interested,
Brien
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the knauf floor system - looks to be designed for open joists when constructing the floor - so the steel layer between might alter the overall approach unless you're treating the floor as a single leaf (i.e. binding the new upper floor to the decking). the overall principles of decoupling the floor and the new lower ceiling seem correct. given a metal deck - i'd be inclined to put on a layer of spray "rubberized matting" to provide a dampening action (these are products used in automotive, boat, and aircraft applications).
obviously the boat is moared, but...
How do you go with power and earthing?
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maybe i'm confused by the photo with the middle partition gone. the pic is showing the ceiling to the exterior?
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