seen a lot of human tragedy.

見過很多人類的悲劇。

You can bundle it up under the blanket of a curse,

你可以把它捆在詛咒的毯子下。

but you can't deny that there is something at work

但你不能否認，有什麼東西在起作用。

here, some relationship between West Virginian industry

在這裡，西弗吉尼亞州工業之間的一些關係

and a seemingly endless cycle of calamity.

以及看似無休止的災難循環。

And since Austin Caperton won't be providing any answers,

既然奧斯汀-卡佩頓不會提供任何答案 And since Austin Caperton won't be providing any answers,

I'm turning to a trusted old buddy--

我向一個值得信賴的老夥計求助 --

science.

科學。

So what we do in this lab is we build stuff.

所以，我們在這個實驗室裡做的是我們建造的東西。

And we break it to figure out how to make it stronger.

而我們打破它，想辦法讓它變得更強。

What a cool job, man.

多麼酷的工作，男人。

SAM SHERIDAN: No disaster is woven into the local folklore

薩姆-謝里丹：當地的民風民俗中，沒有災難是交織在一起的。

of West Virginia quite like the collapse of the Silver Bridge.

西弗吉尼亞州相當銀橋的倒塌。

I think there's reason behind it.

我想這背後是有原因的。

Yeah.

是啊。

It just didn't happen to happen.

只是沒有發生的事情。

They said that the Moth Man appeared

他們說飛蛾人出現了

before the bridge fell.

橋倒之前。

It's like a legend.

這就像一個傳說。

SAM SHERIDAN: Although I'm fairly certain a flying cryptid

雖然我很確定一個會飛的隱身人......"。

didn't cause this disaster, the Silver Bridge did collapse

禍不單行，銀橋倒了

at the exact spot where the Battle of Point Pleasant

在歡樂角戰役的確切位置。

was fought.

是打的。

And some say that was the cause of Chief

而有人說，這就是首席

Cornstalk's dying curse.

玉米棒的臨終詛咒。

So what does science have to say about

那麼，科學有什麼說法呢？

that peculiar coincidence?

這麼巧？

MATT HEBOON: This is a model of the Silver Bridge.

馬特-赫伯恩：這是銀橋的模型。

SAM SHERIDAN: Cool.

爽啊

So the Silver Bridge was similar to a suspension

所以銀橋類似於懸空

bridge except that the suspension

橋，除了懸掛

cables were actually eyebars.

電纜其實是眼線。

So tell me exactly how the Silver Bridge failed.

那你告訴我，銀橋到底是怎麼失敗的？

What happened?

怎麼了？

There was a flaw.

有一個缺陷。

It was actually located at the end of the eyebar.

其實它位於眼球的末端。

That flaw was extremely small, and actually

這個缺陷極小，其實

wasn't visible because it was hidden

不可見，因為它是隱藏的

under the cap of the pin.

在針帽下。

And in this case, the very small flaw initiated a fracture.

而在這種情況下，極小的缺陷就引發了斷裂。

Can you show me what that would look like?

你能告訴我那會是什麼樣子嗎？

Yeah.

是啊。

MATT HEBOON: OK, so we're going to apply a tension lug,

好的，所以我們要應用一個拉桿。

meaning we're going to pull on this.

意思是我們要拉上這個。

[creaking]

[吱吱作響]

What's this kip?

什麼是這個基普？

What is that.

那是什麼？

So a kip is 1,000 pounds.

所以，一個基普就是1000斤。

So we're at 0.21 thousand pounds,

所以我們現在是0.21萬磅。

or in other words, 22 pounds.

或者換句話說，22磅。

It's incrementally adding load.

它的增量是增加負荷的。

This no longer is contributing at all.

這已經完全沒有貢獻了。

All the force that was in this component

所有的力量，在這個組件

is now dumped into this one.

現在被甩到這個。

SAM SHERIDAN: Right.

薩姆-謝里丹：對。

In the case of the Silver Bridge, this happened so fast.

在銀橋的情況下，這種情況發生得太快了。

The first one failed and immediately--

第一個失敗了，馬上...

[snap]

啪]

Let's-- let's do it on our model.

讓我們... 讓我們在我們的模型上做。

MATT HEBOON: OK.

MATT HEBOON：OK。

SAM SHERIDAN: And here's where we smash

這就是我們要粉碎的地方。

stuff in the name of science.

以科學的名義做的東西。

So we're going to simulate the fracture of the eyebar

所以我們要模擬眼球的斷裂。

by cutting one of the yellow strings.

剪斷其中一條黃線。

[dramatic music] When one eyebar failed,

[戲劇性的音樂] 當一個眼球失敗。

there just wasn't enough capacity in the rest

餘量不足

of the system to resist all of the weight of the structure,

的系統來抵抗結構的所有重量。

and therefore the entire bridge collapsed.

是以整座橋都坍塌了。

SAM SHERIDAN: So the Silver Bridge collapses.

所以銀橋就會坍塌。

What's the way this could have been prevented?

有什麼辦法可以避免這種情況的發生？

MATT HEBOON: The original designs for this bridge

MATT HEBOON：這座橋的原始設計是什麼？

called for a suspension cable.

稱為懸掛電纜。

But they decided to opt for a less redundant system

但他們決定選擇一個不那麼冗餘的系統。

with the eyebar chains, which allowed them to dramatically

與眼線鏈，這使得他們能夠顯著地

reduce the cost.

降低成本。

But it also dramatically reduced the redundancy in the system.

但這也大大降低了系統的冗餘度。

SAM SHERIDAN: For those of you at home

對於那些在家裡的人來說...

who never took an interest in civil engineering,

從來沒有對土木工程感興趣的人。

let me spell it out for you.

讓我給你說清楚

Redundancy equals safety.

冗餘等於安全。

So if they hadn't done this with the lowest bidder,

所以，如果他們沒有做到這一點與最低出價者。

there's a possibility that that failure would have happened,

有可能會發生這種故障。

but they would have had enough redundancy that the bridge

但他們會有足夠的冗餘度，使橋

wouldn't have collapsed.

就不會倒塌了。

That's right.

是的