LEGO Towers vs Earthquakes!

[@mattimotion]

The 'construction vs. destruction' concept is just so satisfying to watch. Very nice video!

[@BuilditwithBricks]

Thanks for watching! I can agree that seeing it collapse in real life is also pretty awesome!!

[@paulosborne6517]

When the mass damper swings far enough to smash through the theoretical sides of the building, that is a fail.

[@BuilditwithBricks]

Hi, thanks for the comment! Would give a good view to all those on the ground though wouldn't it! "Must be a big one if we can see the TMD from here..."

[@barbonson_richards]

Its a mass damper, but certainly not a tuned mass damper

[@FailRaceFan]

I see this as an absolute win!

[@TransistorBased]

Obviously in a real building you can get much denser materials so you can make something comparatively smaller.

[@Darkstar327]

How do you get the blue search text

[@k.k.8133]

This reminds me of watching a documentary of the construction of the Taipei 101 as a kid. Cool video!

[@BuilditwithBricks]

Ah, thanks for the kind words! Taipei 101 has a fantastic tuned mass damper, doesn't it!

[@LDVBLDVB]

Mom, i'm on youtube!! 1:18, that's me, that's my life :D

[@nucleardino8992]

No fair, that's clearly me!

[@Montoro23-s8i]

You just invented a machine to disassemble models quickly and easily

[@BuilditwithBricks]

Come to think of it...... you're right! If the model doesn't disassemble the shaker first that is!

[@deepsea_isopod]

Aah yes, the power of shaking stuff real hard

[@AlternateIsopod]

@@deepsea_isopod brother is that you

[@Kaisoku_tarara]

2:09 建物を揺れに耐える構造にするのも大切ですが免震装置もつけたほうがいいんじゃ無いですか？

[@ShrimplyAquascaping]

Just imagine being on the top floor, it wouldn't be pleasant experience to say the least :). Love the video though, especially seeing the damper working in action!

[@BuilditwithBricks]

I mean it only sways to 5 degrees now! Might get bowled out of the building by the tuned mass damper though.... Thanks for watching!

[@ShrimplyAquascaping]

@@BuilditwithBricks yea true lol, the dampener would definitely launch you to another city ( you’ll probably be safe from earthquakes though 😂😂) but for demonstration purposes it definitely works. Also the acceleration would very sudden at the top.

[@Notruhaim]

Wait can you put a heavy ball in the middle inside the building chained it will stop it from shaking too much some skyscrapers use it too the more tall the more weight you need

[@Mega1andy2]

thats actually science at its finest, i truly love it!

[@BuilditwithBricks]

Thanks!

[@rddragon5]

Was it a conscious choice to align the technic bars the way you did for the edges of the floors? I feel like because the way the building slides on one axis that changing the bars facing 90 degrees so the pins are facing the camera instead of perpendicular would made a huge difference for how the buildings fail.

[@BuilditwithBricks]

That's a really good point! It wasn't deliberate, but I think it would have affected the mode of failure!

[@LeonZbikowski]

The mass damper should be in the middle of the building not on top if it would be in middle it probably wouldn’t even lean

[@peterlustig4875]

Are a you sure? Because in the middle is no movement Surfing the resonance frequence or am I wrong?

[@LeonZbikowski]

Well I seen that they put the mass damper in middle of the tapei 101

[@cranemon]

Also, it should be dampened? Because it's a tuned mass *damper*. It's not very effective at dissipating the building's energy if it's just free swinging. Not sure what you might use to dampen it in lego. Maybe a clutch gear at the hinge point?

[@doggfite]

​@@cranemonthe mass is the damper for the building, the mass itself is not necessarily dampened. It's tuned as in it's engineered to have a different resonant frequency to the building itself, it's a mass as in a very large and weight object, and it's a damper as in it's meant to subdue the motion of the building.

[@doggfite]

​@@LeonZbikowskino they didn't, it's on floors 87-92 out of 101 floors, floors 92-100 all being for mechanical systems of the building and floor 101 being an observation deck. It's at the top of the building. TMDs are most often, but not always, at the top of sky scrapers because the top is what experiences the most force and so it needs to be dampened the most. If you put it in the middle (or significantly far from the top) then you could potentially dampen the middle of the building and still allow the top to achieve a resonant frequency and destabilize.

[@creatornamesy]

Now put people inside the building without them falling out and see how hard it is now.

[@Matcha649]

as a chilean i have to say i approve this video

[@iamhugry]

I love how i am 3cm taller than the building at the end

[@MrCydoo]

mass damper must be placed in the center of the mid tower for improve :)

[@EasyMachine]

I loved it 👍 Keep up the great work

[@BuilditwithBricks]

Thank you! Will do!

[@bricksalad_]

Very entertaining video! I loved the stop-motion at the start, that would have taken a while!

[@BuilditwithBricks]

Thanks a lot! Yes - the stop animation always takes ages! I love how it looks though so continue to do it!

[@abhishektripathi1015]

You know about cars, engines and now buildings. You are terrific. Absolutely love your work.

[@BuilditwithBricks]

Ah! Thanks for the very kind words! Glad you enjoy the videos!

[@Kaisoku_tarara]

日本は地震大国だからいっぱい免震構造が施されている建物がありますよ！

[@SmartLegoSG]

wow, nice idea. Look so satisfying!

[@peterday6325]

I noticed the tower and dampener have very similar frequencies. Is it possible to get a differant one so it performs better

[@dcpow]

Coming up with a "video ready" build must have taken a while.? great work as ever!😉👍

[@MincecraftSoundeffects-ii4db]

hello, i really enjoy your videos and wanted to try some stuff for myself, i was wondering if you could tell me we=here you get your legos from. Thank you( do you buy the peices individually or?)

[@thepuppet7021]

3:23 the building managed to beat the earthquake

[@BuilditwithBricks]

Great comment! It was way harder than you think to create a stable earthquake shaker given the increasing weight of the towers! I did so many different designs for the shaker that kept failing before settling on the final design…

[@thepuppet7021]

@@BuilditwithBricks I can imagine yeah

[@marcelfeenstra1624]

seems ... disrespectful to the beloved Lego pieces.

[@The_Devout]

i know that the japanese would build their houses in sepparate parts that when earthquakes hit would have the vibration but it wouldnt collapse bc of the ingenuity

[@fallenkingdom7355]

the refrens structure slomo was inverted

[@aloiscgs1364]

i didnt realize the video is new lol

[@MatthewFarmer-dw8np]

Try big metle ball in the middle on top like shing tower

[@BuilditwithBricks]

I did a tuned mass damper as the final demonstration, thanks for watching!

[@runforitman]

5:15 both of these are in resonance You are just changing the harmonic 5:07 This is the first harmonic 5:15 and this is the second harmonic

[@Feld767]

5:35 dancin building

[@Heckre-kv9lb]

Now imagine trying to reinforce lego sets to withstand 5 Hz

[@SixArmedSweater]

Is that a Wally Darling minifigure?

[@trinishmario1584]

Japanese Constructors taking note 💀

[@ImTheHeyGuy]

👋 hey 👋 😊

[@nikoarc420]

hi

[@cablecar3683]

Third comment! Anyways, nice video!

[@BuilditwithBricks]

Hey, thanks! Glad you enjoyed it!

[@poketurkbaskan1363]

This building is better than standart Turkish houses Hatay Earthquake o7

[@woshigepro2]

6:11 after hot shower.

[@iamhugry]

Shouldn't the bell be at the bottom Connected at the top

[@PerchikASMR]

Cool! By the way, if these buildings had a good foundation, they wouldn’t have fallen😅

[@ChanceAdams-t8f]

I should call him…

[@Kakashi_x_Uzumaki-Official]

Hello, Nice video , I am 8th comment as well but ,can you tell where you get Lego items?

[@BuilditwithBricks]

Thanks! I get most of my LEGO and LEGO Technic from Bricklink - a great second-hand marketplace for all things LEGO!

[@Kakashi_x_Uzumaki-Official]

Thanks 👍

[@katvas5758]

Bro till me why looks like scaffolding tower and creat video

[@Helloiexist1]

Oil

[@Specter3z]

thanks for 300 subscribers 😊

[@petermgruhn]

2:11 - You were right to go to cross braced, as the braces are just too slender for compression. But the problem is not that you immediately need better bracing. It's that you need better connections of the brace to the frame. The cross brace connection locations should get you into trouble but the individual LEGO bits that would fail won't fail from this. Ah, sheesh... "Too stiff" is NOT what breaks buildings. Quick, do you want to sit on a rigid chair or a floppy chair? Quick, do you want to fly in an airplane that undergoes metal fatigue or one that doesn't? I get so tired of this bit of wisdom.

[@TheMaestroso]

It's not rigid vs floppy - it's a spectrum. You need to strike a balance on that spectrum and allow for give when forces are applied so that you can avoid breaks. That's what it means for something to be too rigid. Just look at many bridge failures, like the Silver Bridge in West Virginia. Allowing movement for expansion and contraction is also important. Also ask any woodworker who didn't account for that and see what happened.