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[-] robocall@lemmy.world 127 points 8 months ago

I get all my bridge information from Andrew Tate and Alex Jones.

[-] loobkoob@kbin.social 82 points 8 months ago

They're both certainly people who know how to burn bridges when they see them.

[-] Fenrisulfir@lemmy.ca 50 points 8 months ago

They’re also both people I’d like to see jump off one.

[-] Donkter@lemmy.world 16 points 8 months ago

So all in all, they should have a lot of experience.

[-] CosmicTurtle@lemmy.world 117 points 8 months ago

There is a saying in engineering.

Anyone can build a bridge.

It takes an engineer who can build a bridge just strong enough to let cars cross it.

[-] frank@sopuli.xyz 79 points 8 months ago

Oh man, as a (non structural) engineer I love the saying

"Any asshole can build a bridge, but only an engineer can barely build a bridge"

[-] ZJBlank@lemmy.world 25 points 8 months ago

I’ve heard it as “Anyone can build a bridge that stands, it takes an engineer to build a bridge that barely stands.”

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[-] starman2112@sh.itjust.works 92 points 8 months ago

"I just don't see how the whole bridge falls over that fast"

Bruh it is a ten million ton cargo ship bumping into it, do u think it's just gonna bounce off?

[-] Socsa@sh.itjust.works 35 points 8 months ago

Yeah but it literally floats so how heavy can it be?

[-] affiliate@lemmy.world 14 points 8 months ago

it floats way better than i do, so it can’t be that much heavier than i am. and let me tell you, there’s no way i could topple a bridge by running into it

[-] Numhold@feddit.de 15 points 8 months ago

But that could mean the ship is actually a witch! And witches do have a history of bringing down bridges.

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[-] AlpacaChariot@lemmy.world 28 points 8 months ago

That ship was about 100,000t.

There's a fairly crude equation in the American bridge engineering standard that relates impact load to the mass of a ship, which is:

P =√(DWT) +-50%

Where DWT is the deadweight tonnage, and P is the impact load in meganewtons.

So in this case P=315MN +-50% which is 315000kN or 31500 tonnes of force...

For comparison, I'm working on a project where we're going to build a new concrete bridge on the ground next to where it needs to go (under a railway) then wait until we have a planned week with no trains running and push it into position using jacks. That bridge is a 60m long 20m wide 8m high concrete box with 1m thick walls and top and bottom slabs, and we think we will need about 30MN to install it (one tenth of the impact load from that ship).

So yeah... that's quite a hit.

[-] JustZ@lemmy.world 16 points 8 months ago* (last edited 8 months ago)

Yeah but long tons or short tons. If they used shorter tons maybe the boat would have slipped right between the leg things. The tons were too long. 🪿

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[-] SlopppyEngineer@lemmy.world 15 points 8 months ago

Sure you can build a bridge they can withstand a crazy like that. It'll cost more than the cities it connects and nobody has a budget for that.

[-] Ragnarok314159@sopuli.xyz 10 points 8 months ago

Pfft, just put big magnets on either side of the bridge to make sure it goes in the middle!

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[-] someguy3@lemmy.ca 10 points 8 months ago

You see, gravity is just a theory see.

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[-] Sterile_Technique@lemmy.world 72 points 8 months ago

I mean, all it takes is a look at the cost of shit like tuition and text books to conclude college is a scam, but that doesn't equal a disrespect for the knowledge of people who've gone through it.

[-] DragonTypeWyvern@literature.cafe 54 points 8 months ago

The difference lies in whether the speaker thinks the problem is the clearly evident financial exploitation or thinks that the education isn't valuable.

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[-] Laticauda@lemmy.ca 24 points 8 months ago

There are mainly 2 types of "college is a scam" people. Type 1 is anti-education and places more value on what they typically refer to as "common sense" and think that you don't need an education to know about something. They're the type most likely to think they know more than experts and argue with engineers about bridges. Type 2 is more anti-capitalist and doesn't view education as a scam itself but rather how costly that education is and the opportunities provided to educated people who paid the price is what they see as a scam. They're usually capable of recognizing and acknowledging their lack of understanding about a topic and listen to experts because they do value education, they just think access to it should be easier and cheaper and provide more tangible results for the effort put into obtaining it. This post is probably talking about type 1.

[-] starman2112@sh.itjust.works 22 points 8 months ago

Same thing with Big Pharma. People hear that pharmaceutical companies are greedy and untrustworthy and think it means that their medicine doesn't work. It does, they just charge excessive amounts of money for it. We don't hate big pharma because vaccines don't work, we hate Big Pharma because they sell insulin at a 10,000% markup

[-] Ragnarok314159@sopuli.xyz 12 points 8 months ago

I don’t know, finishing my engineering degree has opened up many a door to well paying careers.

My other two bachelor degrees (business and criminal justice) are completely useless.

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[-] N0body@sh.itjust.works 61 points 8 months ago

All I know about bridges is how to sell them, and I have one right now I can guarantee was built by an entirely white construction team. I examined their skull shapes myself. I'll just need about $80 million, and it's all yours, Elon.

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[-] FleetingTit@lemmy.world 47 points 8 months ago

What the hell are people debating here? A 150.000 tonne object crashed into a structure made of thin sticks (comparatively speaking). There is no doubt that the bridge would collapse. Especially since an arch is only stable if it is undamaged.

[-] FlyingSquid@lemmy.world 30 points 8 months ago

Yes, but you forget: lots of people are stupid.

[-] CompostMaterial@lemmy.world 19 points 8 months ago

George Carlin never fails to be accurate: Think about how stupid the average person is, then realize that half of them are even stupider than that.

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[-] ICastFist@programming.dev 31 points 8 months ago

I mean, colleges are fucking expensive and their biggest appeal is a promise of a high paying job. Even public ones still eat up your soul and you may not necessarily be ready for "the job market" after graduation, or even academic life. Wholly different discussion.

Still, no way in hell I'll doubt that a bajillion ton (tonnes, whatever) of inertia can bring down a bridge. That's effectively an asteroid boulder slowly rolling down hill

[-] ObsidianZed@lemmy.dbzer0.com 14 points 8 months ago

Same. I was thinking, "yes, college IS a scam, but I wouldn't argue with most experts in their respective fields."

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[-] Tronn4@lemmy.world 27 points 8 months ago

Same dunce heads who argued against vaccines

[-] Pika@sh.itjust.works 27 points 8 months ago

I don't think Knowledge is a scam, but I firmly believe that the current College system(at least in the US) is a scam or at the very least super predatory, it's one of the only types of debt that you can't bankrupt on, and if you try to go for anything more than a bachelor's you're likely not going to be able to pay off the loan due to interest accumulation.

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[-] algorithmae 26 points 8 months ago

What is there to argue? Like there's video evidence of it happening

[-] IphtashuFitz@lemmy.world 22 points 8 months ago

There were no construction workers killed in the collapse! It was all fake!

The CIA caused the ship to lose power!

The ship was remote controlled! There wasn’t actually anybody on board until after the collision!

The “construction workers” were actually deep state black ops agents that were there to loosen bolts on the bridge to ensure it collapsed when the ship hit it.

And so on… Never underestimate the fantasies that conspiracy theorists can come up with.

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[-] jve@lemmy.world 17 points 8 months ago

BOAT FUEL CANT MELT STEEL BEAMS

[-] FlyingSquid@lemmy.world 14 points 8 months ago

Same with 9/11. That doesn't stop people.

I have had more PhDs recommend against college than for it. I'm not joking. It's scary.

They'll tell you that if you can get by without a degree, by all means do or at least heavily consider it.

Education is undoubtedly important, as often evidenced by people's lack of it. But even those who ran the gauntlet decades ago have lost faith in the system.

And now we have a whole new litany of problems on their way because of the rising prominence of GenAI and I can confidently say that academia is wholly unprepared for the shit storm coming it's way.

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[-] Daft_ish@lemmy.world 22 points 8 months ago

I have no formal training in building bridges. I actually only learned what a bridge was yesterday. Anyway, here's what I think happened and I will fight anyone who tells me different.

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[-] Gallardo994@sh.itjust.works 16 points 8 months ago

Just use HostNetwork, why would you use a bridge

[-] doggle@lemmy.dbzer0.com 14 points 8 months ago

I went to college for a stem degree... IDK if it's a scam, but I'm extremely far from happy with the value proposition. And my school was relatively affordable.

Of course, that's not a problem with colleges but with policy, imo

[-] Etterra@lemmy.world 14 points 8 months ago

College isn't a scam per se, but the for-profit system as it exists now totally is. So is the myth that everyone needs a college degree - an increasing number of jobs are removing that requirement because it's bullshit and actually limits the recruiting pool for a lot of jobs. It also encourages hiring management with degrees but no experience over internally promoting experienced workers without degrees. Ever had a new manager come in, change everything until it all sucks, then get a promotion or new job a year or two later? A lot of college degrees are mostly just a license to fail upwards.

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[-] bbuez@lemmy.world 14 points 8 months ago

Hell, 3 hours in polybridge would probably give the common sense to realize that supports do in fact, hold the bridge up

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[-] RIP_Cheems@lemmy.world 11 points 8 months ago

It can be a scam, especially if your not gonna use your degree.

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[-] homesweethomeMrL@lemmy.world 11 points 8 months ago
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this post was submitted on 29 Mar 2024
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