Date: 29/11/2023 15:42:09
From: roughbarked
ID: 2098487
Subject: An insanely big bob

Weighing in at: 660- metric tonne steel sphere
Tuned Mass Damper of Taipei 101

Essentially acting as a giant pendulum, the enormous steel sphere moves slightly back and forth to counter any motion of the building itself. It is an engineering marvel meant to limit the vibrations of the 1,667-foot tall building.

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Date: 29/11/2023 15:58:12
From: SCIENCE
ID: 2098490
Subject: re: An insanely big bob

Oh yeah we heard some hospitals there had that kind of thing underground as well, though we never heard accusations that they were also keeping hostages in those tunnels.

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Date: 29/11/2023 16:34:23
From: captain_spalding
ID: 2098495
Subject: re: An insanely big bob

roughbarked said:


Weighing in at: 660- metric tonne steel sphere
Tuned Mass Damper of Taipei 101

Essentially acting as a giant pendulum, the enormous steel sphere moves slightly back and forth to counter any motion of the building itself. It is an engineering marvel meant to limit the vibrations of the 1,667-foot tall building.

Between floors 88 and 92.

I wonder what the people on floors 87, 86, 85, 84, 83, and 82 think about all day?

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Date: 29/11/2023 16:41:14
From: The Rev Dodgson
ID: 2098500
Subject: re: An insanely big bob

roughbarked said:


Weighing in at: 660- metric tonne steel sphere
Tuned Mass Damper of Taipei 101

Essentially acting as a giant pendulum, the enormous steel sphere moves slightly back and forth to counter any motion of the building itself. It is an engineering marvel meant to limit the vibrations of the 1,667-foot tall building.

“Many skyscrapers contain tuned mass dampers to restrain sway,”

I was going to say that, but since they did, I won’t.

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Date: 29/11/2023 16:47:15
From: JudgeMental
ID: 2098502
Subject: re: An insanely big bob

The Rev Dodgson said:


roughbarked said:

Weighing in at: 660- metric tonne steel sphere
Tuned Mass Damper of Taipei 101

Essentially acting as a giant pendulum, the enormous steel sphere moves slightly back and forth to counter any motion of the building itself. It is an engineering marvel meant to limit the vibrations of the 1,667-foot tall building.

“Many skyscrapers contain tuned mass dampers to restrain sway,”

I was going to say that, but since they did, I won’t.

are the notes of these tuned masses all flats?

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Date: 29/11/2023 16:50:57
From: Ogmog
ID: 2098503
Subject: re: An insanely big bob

While it’s not as purdy as the roundball in Taipe
they’d been experimenting with motion dampers
on both coasts in the USofA

432 Park Avenue Mass Damper

Worlds thinnest SkyScraper

…meanwhile on the Left Coast…

Seismic Innovation in California

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Date: 29/11/2023 17:23:30
From: Bubblecar
ID: 2098511
Subject: re: An insanely big bob

该插图将球比作人

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Date: 29/11/2023 17:25:52
From: roughbarked
ID: 2098512
Subject: re: An insanely big bob

The Rev Dodgson said:


roughbarked said:

Weighing in at: 660- metric tonne steel sphere
Tuned Mass Damper of Taipei 101

Essentially acting as a giant pendulum, the enormous steel sphere moves slightly back and forth to counter any motion of the building itself. It is an engineering marvel meant to limit the vibrations of the 1,667-foot tall building.

“Many skyscrapers contain tuned mass dampers to restrain sway,”

I was going to say that, but since they did, I won’t.

but but, you did. ;)

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Date: 29/11/2023 19:56:21
From: captain_spalding
ID: 2098562
Subject: re: An insanely big bob

Bubblecar said:


该插图将球比作人


I was going to ask if that was Bob The Builder, but it seems more likely that he’s The Bob Builder.

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Date: 30/11/2023 07:57:37
From: mollwollfumble
ID: 2098650
Subject: re: An insanely big bob

Yes. As a civil engineer I know about tuned mass dampers, and specifically the famous one from Taipei 101.

Many tall buildings in Australia use a sloshing damper. Which I like to describe as a large swimming pool. The sloshing of water in the pool dissipates energy, reducing the sway of tall buildings due to wind and Earthquake.

An amusing story I heard was of the maratime services building in Sydney, which has no such damper. The building sways enormously but there have been no complaints. On investigating this, the researcher realised that the building was occupied by former sailors, who probably felt quite at home with the movement. Perhaps reminding them of their shipboard days.

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Date: 30/11/2023 08:39:00
From: Ogmog
ID: 2098658
Subject: re: An insanely big bob

Bubblecar said:


该插图将球比作人


aaaaaa…. then I won’t mention it either

…………………………………..runzaway

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Date: 30/11/2023 09:16:37
From: SCIENCE
ID: 2098674
Subject: re: An insanely big bob

Ogmog said:

Bubblecar said:

该插图将球比作人


aaaaaa…. then I won’t mention it either

…………………………………..runzaway

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