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Re:Evergrande has defaulted on its debt, Fitch Ratings says by papito on Thursday December 09, 2021 @09:01AM (#29497380)
It always bothered me when someone on America's Funniest Home Videos leaned into a wall (or, ran into it, gently), making a giant hole in it.
Re:Evergrande has defaulted on its debt, Fitch Ratings says by lotsofpulp on Thursday December 09, 2021 @09:02AM (#29497392)
Why? I cannot think of a reason to invest in solid walls that cannot be broken unless you are living in a war zone.
Re:Evergrande has defaulted on its debt, Fitch Ratings says by gambiting on Thursday December 09, 2021 @09:06AM (#29497448)
Sound insulation? My mum has a house that's literally built from concrete, and it's impossible to hear anything from one room to another, it's amazing.
Re:Evergrande has defaulted on its debt, Fitch Ratings says by lotsofpulp on Thursday December 09, 2021 @09:08AM (#29497478)
You can get the same by using quality drywall and insulation and proper air gaps.

The minimum code built house will not get you that, but it is easily achievable with stick built.

Concrete and steel are still superior of course, and I opt for those in commercial construction. But I have never seen a need for concrete and/or steel in suburban home construction just for noise.

Re:Evergrande has defaulted on its debt, Fitch Ratings says by refurb on Thursday December 09, 2021 @09:51AM (#29497937)
I lived in a concrete building and sound travels more than in a wood framed house.
Re:Evergrande has defaulted on its debt, Fitch Ratings says by geoduck14 on Thursday December 09, 2021 @09:41AM (#29497810)
By the way, sound travels better through solids (like concrete) than air.
Re:Evergrande has defaulted on its debt, Fitch Ratings says by gambiting on Thursday December 09, 2021 @01:45PM (#29501255)
I mean......that's true but only if the emitter is attached to the solid, and also only if you measure the transferrence in the solid itself, the solid to air transmission after is extremely poor.

Otherwise you'd be telling me that if I suddenly put a concrete wall between us I should hear you better, not worse, right? /s

Re:Evergrande has defaulted on its debt, Fitch Ratings says by geoduck14 on Thursday December 09, 2021 @03:52PM (#29502775)
>the solid to air transmission after is extremely poor. >Otherwise you'd be telling me that if I suddenly put a concrete wall between us I should hear you better, not worse, right? /s

What if I put 2 sheets of dry wall with an air core in between us? Are you telling me that would give better sound transmission than a solid concrete wall?

Re:Evergrande has defaulted on its debt, Fitch Ratings says by gambiting on Thursday December 09, 2021 @04:08PM (#29502955)
No, but it's not the air that's deadening - it's the drywall, because just like with concrete, you need to transfer the energy of the sound from the air into the drywall, then air, then drywall, then air again. It's the change between mediums that provides insulation here, in addition to the vibration damping properties of drywall. In fact if you already have concrete walls and want to add sound insulation in your house, the easiest solution and most common solution is to cover them in drywall.
Re:Evergrande has defaulted on its debt, Fitch Ratings says by geoduck14 on Thursday December 09, 2021 @08:00PM (#29505220)
So can we agree, houses built with 2 layers of dry wall and an air core will have more sound deadening than a house built with concrete walls?

And that the original posters tale of "superior sound insulation" in a house with concrete walls is likely due to factors other than the concrete walls?

Re:Evergrande has defaulted on its debt, Fitch Ratings says by gambiting on Friday December 10, 2021 @03:22AM (#29507676)
All I said was that my mum has a house made entirely of concrete and the noise insulation in that house is insane, you can't hear a single thing from room to room. I'm not a structural engineer however and I have no idea why that is.
Re:Evergrande has defaulted on its debt, Fitch Ratings says by geoduck14 on Friday December 10, 2021 @08:31AM (#29509593)
Oh. Ok. So you have 2 facts sitting right next to each other that are completely unrelated. One about the construction of a building. The other about sound transmission withing the house. I understand. I was under the impression that you were trying to suggest that one fact implied the other. Forgive me
Re:Evergrande has defaulted on its debt, Fitch Ratings says by vlozko on Thursday December 09, 2021 @10:09AM (#29498158)
Videos where you see that happening is usually because the drywall was built on studs spacing more than 16" on center. 16" on center is pretty universal and it takes a significantly larger amount of directed force to create such holes.
Re:Evergrande has defaulted on its debt, Fitch Ratings says by ljm on Thursday December 09, 2021 @10:12AM (#29498204)
It's a health and safety precaution so the Kool-Aid jug thing can bust into your house without injuring itself.