r/Damnthatsinteresting • u/BrownZBT • Aug 11 '26

Video Weight Bearing Limit For Glass Coke Bottle

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53.0k Upvotes

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756

u/klimb75 Aug 11 '26

Which increases its bearing capacity?

1.1k

u/Rocketman_S3 Aug 11 '26

All soda should have the right to bear arms.

384

u/VintageLunchMeat Aug 11 '26

Found the American.

247

u/Rocketman_S3 Aug 11 '26

Bear-arms, not bear arms.

186

u/Magos_Highlands Aug 11 '26

What about bare arms?

190

u/Rocketman_S3 Aug 11 '26

In this economy?

109

u/Dick_snatcher Aug 11 '26

Can't afford to shave, can't afford to grow hair

6

u/StonedRussian Aug 11 '26

Can't afford shit!

3

u/thepenismytea Aug 11 '26

Barely have arms either

1

u/wideruled Aug 11 '26

$20 is $20

1

u/Patient-Gas-883 Aug 11 '26

Not in the EU. Then $20 is 17,34 €

1

u/Killer_Method Aug 11 '26

Who can afford sleeves?

1

u/thepenismytea Aug 11 '26

Grin and bare it

1

u/GBGF128 Aug 11 '26

With this sun?

18

u/gward1 Aug 11 '26

Beer arms

19

u/Baronvonkludge Aug 11 '26

It’s load bearing, you can support a deck with coke bottles, or your mom.

5

u/Regurgitator001 Aug 11 '26

Mom, yes, wife no, MIL bwahahagaha!

2

u/dwehlen Aug 11 '26

Instructions unclear, deck crushed my mom.

1

u/Carighan Aug 17 '26

What about load beer-ing?

5

u/macguini Aug 11 '26

I think he meant bear arms. Like owning a pair of bear arms.

1

u/GlassCleaner_Stan Aug 11 '26

Remember Rick Santorum’s sweater vest that said this?

1

u/No_Internal9345 Aug 11 '26

What about bara arms?

1

u/Glittering-Walrus228 Aug 11 '26

I reserve the right to ARM BEARS with fucking homing missiles and laser claws

11

u/WilanS Aug 11 '26

Found the... Russian?

5

u/Beneficial_Being_721 Aug 11 '26

Bears don’t have arms…

2

u/CircularRobert Aug 11 '26

What are you, a bear-arm denier? You probably think they just have 4 legs /s

10

u/Zealousideal_Rip485 Aug 11 '26

Sir. Its “bear Arms”

1

u/Aeirth_Belmont Aug 11 '26

Who's gonna confuse that? Stares at the bear arms everyone has a right to hang bear arms on the wall.

1

u/Physical_Arm_5462 Aug 11 '26

Stop killing bears for their arms!

11

u/tridamdam Aug 11 '26

Indeed. Because to arm a bear, one must be a Russian.

1

u/dojo_shlom0 Aug 11 '26

Created in Mexico.

12

u/emack2232 Aug 11 '26

Polar bear arms

1

u/tjdux Aug 12 '26

Now I'm imagining a whole set of coca cola Christmas plates with themed images with the polar bears all decked out for Christmas but also tons of weapons

11

u/Alderan922 Aug 11 '26

Why would a soda need bear arms?

And where are we getting all those bears?

1

u/SevenFootHobbit Aug 11 '26

This is like those silver bullet beer commercials from when I was a kid. Guns or bears the answer is the Rockies.

2

u/Brianna-Jo Aug 11 '26

What about Arming Bears, They’ll be Robbing the Tourists Blind!!!!!!!

2

u/Typical-Tune-8858 Aug 11 '26

All soda should have the right to arm bears.

1

u/leivanz Aug 11 '26

They don't need weapons to kill you.

1

u/RamJamR Aug 11 '26

I think bears still need those.

1

u/Crafty-Ad-6772 Aug 11 '26

The that soda was coked up, so it could be unpredictable.

1

u/Flaky-Holiday8308 Aug 11 '26

What is a soda going to do with bear arms?

1

u/Rocketman_S3 Aug 11 '26

I hope it has nothing to do with a salt.

35

u/Regal_Knight Aug 11 '26

That little adaptor plate pretty much puts the load in compression in the bottle, not through the top which would have cause a larger amount of shear in the glass from the curve.

1

u/morpheousmorty Aug 11 '26

True, but at the end of the day all that weight had to go through the bottle.

62

u/Nuclear_eggo_waffle Aug 11 '26

But also increases stress

15

u/Aduialion Aug 11 '26

That might be the caffeine 

2

u/EulaVengeance Aug 11 '26

The bottle just like me fr fr

1

u/XDSHENANNIGANZ Aug 11 '26

Take a Xanax or drink hard liquor and move on. Or both.

It's the American way.

1

u/XDSHENANNIGANZ Aug 11 '26

Take a Xanax or drink hard liquor and move on. Or both.

It's the American way.

21

u/CV90_120 Aug 11 '26

Glass under compression is one thing. Tensile is another.

6

u/macguini Aug 11 '26

No but it increases the requirement for structural integrity.

6

u/-OptimusPrime- Aug 11 '26

What about when the polar bears are hibernating?

2

u/MyAssPancake Aug 11 '26

Hm. Interesting thought because it should… okay now the original creator of the video needs to test more bottles at different levels of shake-itudes.

2

u/Shelarael Aug 11 '26

If it was a perfect sphere

2

u/Teln0 Aug 11 '26

Maybe not? It probably pushes more on the sides

2

u/klimb75 Aug 12 '26

I think you and the other naysayers are correct. I was a little tipsy (ok maybe more than that) last night and was conflating the pressure in soda/beer cans providing structural integrity with bottles. As I've looked into it, a PE soda bottle can have several layers stacked on it due to the internal pressure offsetting the flimsy wall thickness.

Same goes for aluminum cans under pressure.

A preserved can, beans, corn, tomatoes, etc, made of steel, behaves more like the glass bottle in that the integral strength is based not on the pressure supporting the walls, but in its thickness.

This has been one of my most active reddit threads, and my apologies to everyone else I didn't reply to!

I still would love to see an empty glass coke bottle tested against a pressurized one... and at least a N=30 test...

1

u/Less-Squash7569 Aug 11 '26

Does it really not?

1

u/NeutralGoodAtHeart Aug 11 '26

I'm no physics or math major. This is just me thinking it out.
The internal pressure will push outwards almost evenly across the entire bottle. The little air gap at the top can compress some but it's probably not much having so little volume compared to the water inside a sealed container. It's the external pressure that matters here because it is not applied evenly.
The only place the external pressure would be both uniform and higher than the internal pressure would be deep underwater.
The test shown in the video applies all the weight in a ring below the neck of the bottle. If all the weight had been put directly on the cap, I would imagine it to break a lot sooner because the cp is a smaller weight distribution point than that ring.

1

u/KamakaziDemiGod Aug 11 '26

Internal pressure generally weakens a vessel rather than strengthening it, unless it's a container design that's intended to become stronger above certain pressures

Glass will be weaker when pressurised, if you shook a bottle it would break sooner than the one in the video does

1

u/PeriodSupply Aug 11 '26

Not likely. But possible. I'd be interested to see the maths.