this post was submitted on 29 Mar 2024
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[–] starman2112@sh.itjust.works 92 points 8 months ago (5 children)

"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 (2 children)

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

[–] affiliate@lemmy.world 14 points 8 months ago (1 children)

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.

[–] captainlezbian@lemmy.world 8 points 8 months ago

Physics does not work that way goodnight!

[–] AlpacaChariot@lemmy.world 28 points 8 months ago (1 children)

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) (1 children)

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. 🪿

[–] Strobelt@lemmy.world 5 points 8 months ago (1 children)

#longTonConspiracy #longTonCon

[–] JustZ@lemmy.world 2 points 8 months ago (1 children)

Reminds me of the Canadian Conspiracy Convention, CanConCon.

[–] Strobelt@lemmy.world 3 points 8 months ago

But can Ken can the long Ton Con on the CanConCon?

[–] SlopppyEngineer@lemmy.world 15 points 8 months ago (1 children)

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 (1 children)

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

[–] SkippingRelax@lemmy.world 9 points 8 months ago (1 children)

Magnets stop working if they get wet, like under a bridge

[–] JustZ@lemmy.world 3 points 8 months ago
[–] someguy3@lemmy.ca 10 points 8 months ago

You see, gravity is just a theory see.

[–] thelasttoot@lemmy.world 3 points 8 months ago (1 children)

Bro, it's a trillion ton bridge. You're comparing a bug flying into a windshield and telling me the windshield should break. R u serious 4 real?

Huyuck. Sorry for that. But this is the kind of shit you're going to have to deal with. So you better have an answer for it.

[–] starman2112@sh.itjust.works 15 points 8 months ago

"If I hit your kneecap with a hammer, I'm only taking out one support, but your hole ass is hitting the ground" seems like a good response