Thanks - all crystal clear now (in spite of the early hour).Wonks wrote:I did mention that my company (Arup) were the consulting engineers on the Birmingham Symphony Hall project and I had read articles published in internal mags on the spring system. As I haven't been actively working there for 5 years now, I was hoping someone could see if there was any archived data available.Folderol wrote:Ummm. Don't follow you ol' bean - have I missed something?Wonks wrote:Failed on the info front from the office. People I'm still in touch with all seem to have left. :(
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BBC Location Recording
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Re: BBC Location Recording
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Folderol - Jedi Poster
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Yes. I am that Linux nut.
Onwards and... err... sideways!
Onwards and... err... sideways!
Re: BBC Location Recording
I had some inspiration and found a reference to the project in a 50th Anniversary of Arup book. Not a lot of detail, but at least some basic diagrams showing the basic principle (probably taken from the internal article I read). Whilst the number of piles has been reduced for illustration purposes, the relative sizes are probably correct. So no 50' thick rubber blocks. 5" sounds too small (no sniggering at the back), so more likely in the order of 50cm.


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Wonks - Jedi Poster
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Re: BBC Location Recording
125mm = 5" no?forumuser840717 wrote:Symphony Hall is structurally decoupled by 2000 specially engineered laminated rubber bearings (pads) (laminated in that they're made of sandwiched layers of rubber and steel). They're 300mm x 300mm x 125mm thick. Each bearing takes a load of up to 40,000kg with a primary resonance at 40Hz. They're mostly mounted in groups of eight on the tops of concrete column piles. On top of these is a concrete raft which supports and distributes the load of the building.
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blinddrew - Jedi Poster
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Ignore the post count, I have no idea what I'm doing...
Re: BBC Location Recording
I missed that. Yes, 5".
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Wonks - Jedi Poster
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Re: BBC Location Recording
That could well be the answer -- thanks; a misplaced '.
But out of interest, does it indicate the depth of the foundation piles?
H
But out of interest, does it indicate the depth of the foundation piles?
H
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Hugh Robjohns - Moderator
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Re: BBC Location Recording
Probably pretty deep as they pass through the Birmingham treacle layers.
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Wonks - Jedi Poster
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Re: BBC Location Recording
Yes... I have it in my head that the line should have read something like '... mounted on 2000 rubber pads on top of 50-foot thick concrete piles...'
H
H
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Hugh Robjohns - Moderator
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Re: BBC Location Recording
Hugh Robjohns wrote:Yes... I have it in my head that the line should have read something like '... mounted on 2000 rubber pads on top of 50-foot thick concrete piles...'
H
Have you managed to get out of your pod yet, or is the chap with the blowtorch still working on it?
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Wonks - Jedi Poster
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Re: BBC Location Recording
Still working on it, but he managed to slip a sandwich through the gap... :bouncy:
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Hugh Robjohns - Moderator
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Re: BBC Location Recording
Toasted sandwich? :D
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Wonks - Jedi Poster
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Re: BBC Location Recording
The thing is, you may record at 24 bits or 42 bits or even 97 bits, but the numbers will never be high enough: what you really need is an amp that goes up to infinity.
Cue Nigel: https://youtu.be/09lmHPXYNks?t=280
Cue Nigel: https://youtu.be/09lmHPXYNks?t=280
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Re: BBC Location Recording
My amp goes one higher. :lol:what you really need is an amp that goes up to infinity
- MOF
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Re: BBC Location Recording
Thank you for the replies to my original question about a possible typo.Yes... I have it in my head that the line should have read something like '... mounted on 2000 rubber pads on top of 50-foot thick concrete piles...'
- MOF
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