Collapse of the Tacoma Narrows Bridge - Galloping Gertie

[TheBlackBritt]

poor dog

[GUYrobo2]

Dirt Jobs guy!



[MrArmandoToledo]

if u got out of a car with any living thing in it with the intention to abandon car for whatever reason wouldnt you take the living thing out of the car with you. it just doesnt make sense why he left his dog in the car...there is no excuse that would justify it

[237kitty]

that must suck for the people who were about to board the bridge -.-

[c1nn4m0n69]

@ 1:49 a guy goes off the right side of the bridge. I thought the dog was the only fatality. Maybe he survived the fall?

[390bullitt1968]

Al Queda attached a rope to this and was pulling at it. The rope cannot be seen with the naked eye, but that is what happended. Just believe and never ask questions of your government. Yes, Oswald killed JFK and a 580 degree fire melted 47 steel columns and turned WTC 1-2-7 into dust. You are not allowed to think for yourself in America. Government will think for you.

[Twixgtx]

Mike Rowe? on History? This is blaspheme!!

does anyone know if it would be a good idea to put a video of this in a project about Resonance and Bridge Design?

[619426]

is that the Dirty Jobs guy???

Also, im surprised the bridge lasted 5 months. I would've charged people 5 bucks just to see it. 7 bucks to walk across it. And 10 to drive over it. But they would have to sign a waiver.

[scallly64]

Was it really neccessary to mention the news reporter left his dog behind in the car!!..Then tell us how the car went off the bridge?!!!!

[ferociousgumby]

I heard it was wind resistance that did it in. Also, I heard they cut corners on materials, given that it was during the Depression. An earlier, more sturdy design was voted out.

[rapeistman9]

@tailslvr no u fag

[naflodii]

The bridge collapse had lasting effects on science and engineering. In many undergraduate physics texts the event is presented as an example of elementary forced resonance with the wind providing an external periodic frequency that matched the natural structural frequency (even though the real cause of the bridge's failure was aeroelastic flutter[1]).

[Asiankidz1]

why do people call it gallopin gertie ?

[needles1987]

I used to live in Gig Harbor.

[cutietwo22]

that is amazing to watch that bridge sway like that..like it's made of playdough!

[mroscarking]

Poor dog can u imagine how scary that must have been for the reporter and espeicually is dog as the bridge collasped

[Sapphiregriffin]

that is eeary in black and white

[adamsmith86]

The collapse had nothing to do with the wind strength or speed. The main reason for the collapse is called RESONANCE. It is a physics phenomenon natural to all materials, buildings, machines and constructions. In this case wind is the natural cause of resonance, and resonance is the ultimate reason why the bridge collapsed. Nowadays, resonance is taken into account when it comes to design a new structure.

[naflodii]

It wasn't resonance it was aerostatic flutter. Just look it up on wikipedia.

[adamsmith86]

@naflodii Flutter is a self-feeding and potentially destructive vibration where aerodynamic forces on an object couple with a structure's natural mode of vibration to produce rapid periodic motion. Resonance is the tendency of a system to oscillate with larger amplitude at some frequencies than at others. The frequency with cause larger and larger amplitudes, until collapse, would be “flutter”. So basically are related terms. Yes, maybe “flutter” is more concise. 

[flux77xulf]

@adamsmith86 "Nothing to do with wind?" Cool story, bro.

That's why it swayed so wildly on days without wind, right? Oh wait it didn't sway at all then.

[adamsmith86]

@flux77xulfI did not say it had nothing to do with wind. I said it had nothing to do with wind strength or speed. Wind just triggered the reason that provoked the collapse, but it was not wind speed what pushed the bridge down. It was resonance. You can have resonance on a bridge without any wind. It could have been provoked by many crossing cars at one time. The result would have been the same as wind. So wind does not explain the collapse by itself and resonance does. Thats what I meant.

[killerbot1990]

@adamsmith86 Youre right and wrong... resonance is what caused the bridge to collapse but it wasnt the cars or anything like that... it was the strength and speed of the wind which made the frequency of the wind the exact same as the frequency of the bridge therefore doubling the frequency of the bridge and causing it to collapse...

[halfmaster1]

@adamsmith86 I heard it's aerodynamics caused low air pressure underneath it.

[adamsmith86]

@halfmaster1 Aerodynamics, yes but what aerodynamics? Aerodynamics is just a part of the field of General Mechanics. Resonance or flutter as someone else pointed out correctly is the ultimate cause. If anything can cause vibration on a bridge, as it is, anything could have caused the collapse. A truck provoking a vibration frequency equal to the resonance frequency of the bridge would have caused the bridge collapse without any wind at all