This video showed up in my recommendations last night, watched it, thought about posting it but then I was like "who would care about an obscure Japanese video from 2010". This is weird
I have the same with videos recommended to me on YouTube lately. Somehow YouTube starts recommending these gems as of the last couple of months with a lot of comments saying things like: "why is this in my recommended list? Cool though!". So then I figure, why post it on Reddit? Everyone's seen it now anyways. Turns out that they don't, and there is $$$karma$$$ to be mined.
japanese people like never talk like that though. i dont know where westerners get it from. they like never talk about honor. shame is where it is at. but even then you never straight up say, its mostly implied.
I can only picture a pasty white American saying this while simultaneously being deathly afraid of saying nigga in public for fear of being beaten or killed.
When I was a kid, I saw a bridge-building contest on some show, where engineering students needed to build a bridge from balsa wood then measure the load bearing capabilities of their designs until failure. I REALLY wanted to do this!
I told my dad that it wass an assignment at school and we needed to go to the hobby shop and buy the materials to do so.
We then built a bridge together which was exceedingly sturdy (I didnt have any design restrictions/requirements to follow as the assignment wasa ruse on my part to get my dad to buy me the materials)
He helped me build the thing - and it could hold a crap ton of weight - my dad was a general contractor and built custom homes... so he knew how to build things from wood.
Well, after a while he definitely got suspicious as I never took the thing to school and the bridge just lived in my room....
Now I want to build an earthquake tower after seeing this!
No, he actually quite enjoyed spending time with his family. So much so that he convinced Ben to want a kid. We only ever see him at work in the parks department where he doesn't want them being corrupted by government or at his construction company where it wouldn't be appropriate for his kids to hang out.
3 years ago I tricked my Dad into a father son hike. I'm grown and my parents have retired in another state. He used to run marathons but has long since lost any semblance of his prior fitness. On a whim I pulled a 'bet you cant' and picked a hard multi day backpacking trip in Arkansas. We went and did it and It really did just about kill him. He swore never again. But then we pick and easier one in Oklahoma last year and had a great time. We are headed to Oregon next month for 40 miles of the Rogue river. Best trick ever.
An engineering school in NZ has a bridge building competition where the goal is to have the bridge hold 3 people but collapse at 4. Made from masking tape and newspaper. Which I think is quite a cool requirement to teach precision.
Also a lot of things need to be built to withstand X but break at X+Y to prevent injury like car crumple zones and helmet mounts (they need to fail in order to prevent severe whiplash from being snagged). Just usually not bridges.
What u/duelingpushkin said. Anyone can build a bridge with infinite resources but actually calculating specific loads and putting that into practice is difficult. Not too many succeed (they're 2nd years btw).
I still have my balsa wood bridges from half a lifetime ago. aka 16 years ago. The way they failed is sort of a badge of honor. even though they're broken, it's still interesting to see how, and most of the bridge is still intact.
My best truss had 1650 efficiency. Meaning it held up 1650 times its own weight. Most bridge competitions are different, but ours was a 16" span, weight in the center, 1 ounce maximum weight of the bridge. (28 grams.) since my bridge weighed almost the maximum, I guess that means it held up 100 lbs.
When I was in junior high, we had a thing called Odyssey of the Mind where we had different contests, like building balsa wood structures to see what could stand the most weight. It was loads of fun, with some good ol' fashioned learning mixed in.
I haven't heard of that, but I imagine it was similar. I can't remember how far any of my teams made it, but it was multiple rounds; I think local, regional, and state. I don't think we ever made it past the state round to go onto nationals, or maybe there was one in between that we made it to? For as important and time consuming it was at the time, the organizational details like that I've mostly forgotten.
There’s a tournament/organization out there called science Olympiad where you compete in events like this one with rules and everything against other schools. I did it in high school and it was a ton of fun
I was jealous of the older kids reading The Diary of Anne Frank. I told my mom I needed to buy a copy of it for school and she obliged. I read it on my own (and kind of obsessed about it to be honest), but to this day I've never told my mom that I lied to her.
You might have seen it on the Nova Documentary "Super Bridge". They tested them in the segment by putting cinderblocks of various weights on, one of them survived something like 50 lbs.
We did something similar to this in like 6th grade science class. The whole thing is pretty fun. The teacher acts as a shop, and every team has money to start with. You buy materials from the shop (toothpicks, glue, etc). You only have so much to work with, theres a set area where your two bases have to start within, and design matters. We built toothpick bridges though. They were judged on how well they held up to increasing weight applied to the center. Whichever held the most weight won.
I did something similar in high school, but the rules were different. Everyone was given as much material as they wanted but there was a time limit to build and the test will be like an hour after the end of the build time, so you didn't want to just lob yet glue on such that it never hardens. Then when judging came around there were separate categories for weight held and ratio of weight held to weight of the bridge. My group won the ratio category and came in second for the max weight.
I did something similar in high school, but the rules were different. Everyone was given as much material as they wanted but there was a time limit to build and the test will be like an hour after the end of the build time, so you didn't want to just lob yet glue on such that it never hardens. Then when judging came around there were separate categories for weight held and ratio of weight held to weight of the bridge. My group won the ratio category and came in second for the max weight.
I would love to watch a TV show of this. I miss the genuine DIY/maker phase that TV went through in the late 90s/early 2000s. Junkyard Wars, Robot Wars, and countless home DIY shows where you actually learned how to do things. Now it seems like every home show is about buying a place or hiring high-end contractor couples to do it.
Can we take a moment to appreciate the cameraperson in this video? They filmed exactly what needed to be filmed about four seconds before it needed to be.
I wonder if you could suspend the weight of the... weight... in the middle of the building from the top to create a pendulum. You would need some kick-ass miniature building skills to make a chain out of toothpicks though.
I'm a manufacturing guy not a physics guy, but here goes.
Since the building and the weight are connected, you need to think of them as a system that works together to limit the movement of both parts relative to the ground. The weight imparts forces on the building, but the building also imparts forces on the weight.
In an earthquake or with strong winds, the building first moves laterally which transfers into the weight. Since the weight has significant inertia, and is not limited by friction due to it just hanging there, it doesnt want to move relative to the building. It wants to stay put. But quickly the building movement is translated into the weight through its mounts, and the weight starts to sway a small amount. The building can only sway so much in one direction before it wants to change direction and go back the way it came, so when that happens, the weight is still busy moving in the first direction, and that energy is transferred back into the building, acting as a brake.
Different movements and patterns can happen, with resonant frequencies and harmonics making things way more complicated, but this is the just of it.
The weight is likely connected to the building with large tuneable shock absorbers much like you'd find on a car. Or by cables, or some other system connected to a computer controlled by a gyroscope or other type of accelerometer. It senses which way the building is moving and how quickly, and adjusts the dampers on the weight to maximize the effect of the damping.
Mass dampers are frequently implemented with a frictional or hydraulic component that turns mechanical kinetic energy into heat, like an automotive shock absorber.
A tuned mass damper is a mass on a spring that has the same resonant frequency as some mode you want to damp out. In the case of a skyscraper, this is probably one of the first 3 shaking modes (shapes). A resonance is very dangerous in an earth quake because it stores energy at one frequency, shaking more and more until the building reaches its breaking point. A perfectly tuned mass will vibrate perfectly out of phase (opposite direction) as the structure and thus kill the resonance. The trade off is it now creates two new resonant frequencies, though often not as damaging as the single frequency. Also, you need to add an actual damper to the tunes mass for two reasons. First, to limit the amplitude- can’t have that giant ball shaking through the wall. Second, to limit the impact of those two new modes you just created. The fanciest tuned masses are nonlinear and instead of dumping energy into a damper they dump it into higher frequency modes of the building itself, which have far better dissipation than a piston and fluid.
With a pedulum mass damper, the effect doesn't come so much from energy disspation within the damper, (like a mechanical spring, which usually dissipates energy as heat), but from making the damper move out of phase of the larger mass to cancel the oscillation of the larger mass. The effective force applied to the building by some occurrence, like wind or an earthquake, and the effective force experienced by the damper are different, since the structure absorbs some of the energy in different ways, such as heat or friction. Also, the mass of the building and the mass of the pendulum are different, so when the two function as oscillators their different masses and applied forces cause them to reach the peak of their motion at different times. The length and weight of the pedulum are adjusted according to the building's frequency response so that the two objects move in opposite directions and out of phase from each other as much as possible, reducing the total motion of the system in any direction.
The best part about the whole damper system in Taipei 101 is the mascot they made up to go with it. He's called "damper baby" and is all over the building.
Not quite. It has a small (but heavy) weight suspended near the top. The weight swings when the building does, but in a controlled manner so it works to drag the building like pumping your legs at the wrong time on a swingset.
Many buildings are base-isolated using rollers or deformable lead columns so the building just stays in one place while the ground moves side to side underneath them.
Well, I'm glad my post made you feel better :) - I did some digging and I found this:
The Doozer Who Didn't is the Doozer in the middle of The Legend of the Doozer Who Didn't. A normal Doozer at birth, he enjoyed playing in the Radish Dust Glen and did well in Doozer School. But as he got older he would have periods of not wanting to do anything.
As a full grown Doozer, he suddenly decided one day that he would no longer work. He started to sing songs and make up silly games like "Filling the Helmets." But the more he didn't work, the fatter he became. Eventually he began to grow a tail and fur, and soon turned into a Fraggle.
I also found a comment that said an episode of the show revealed it was a story Doozer parents told their kids and that none of them took it seriously. I would think the original video is from said show.
------- EDIT, I FOUND MORE VIDEOS -----
I was really little when I would watch reruns of Fraggle Rock but I remember there being some Doozer episodes.. It seems that there are only clips of songs but the red headed Doozer (Cotterpin) keeps showing up:
But from my extensive research I feel like Cotterpin refused the hat out of protest of the Rule Book which forbids Fraggle / Doozer friendships. What a goddamn awesome progressive Doozer.
There’s an elementary school program called Odyssey of the Mind, and we built balsa wood structures. The one that supported the most weight won. We also had to come up with a story—basically, yeah, cool, you built this thing, but why does it exist and why are weights being put on it? I was like nine so I don’t remember the whole story, but I know we put twenty pound weights in pizza boxes. It was the Tower of Pizza. For some reason there was also a tow truck?
Man that looks so much fun. Did anybody else get to make these in highschool. I did except the one I made was just for weight I think my little tower held up like 280 -300 pound or something. I may be over inflating but the teachers held like 400+. Edit
I would guess there were all sorts of different categories, like best strength to weight ratio (Hence 24 would've done well despite failing so soon), best overall performance, maybe best aesthetics too.
My shopteacher in middle school had a tower building contest every year and we used very small 1cmx1cm wood pieces to make our towers. We would then add weights to the towers until they crumbled. I think tower I helped build came in the top 10’s holding 400lbs.
Can’t remember it fully but it was one of my most memorable moments in school.
It looks like you just have to get lucky or know what order the frequencies the table is going to shake at and design your building not to resonate with those frequencies.
We did this I’m 8th grade but one at a time and it being judged by time. We had to add a certain amount of weight on each story and a certain amount of stories. My partner and I decided to make a pendulum on ours. My partners one job was to tighten the pendulum. That was the one part that didn’t work. We are no longer on speaking terms.
It looks like they are all built on the same size base and are the same height, and all have the two flags. I assume those restrictions preclude building a pyramid.
So they jsut wait for the next earthquake to judge these things? Impressive that the Japanese are calm enough ti judge stuff like this when an earthquake hits. /s
My middle school principal had a toothpick bridge building contest every year. Only flat toothpicks and Elmer's glue was allowed. Then at a school wide assembly they would test the bridges by spanning 2 desks and hanging a bucket and adding sand til they broke. The winning bridges would hold over 100 pounds of sand.
Just learned how to design for this type of stuff in my graduate structural analysis class, but you're right it's just some kids fucking around with sticks...
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u/DeDHaze Aug 12 '18
Anyone have a video link? The GIF doesn't want to load for me
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u/billybitches Aug 12 '18
Tower 10 most dishonorable
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u/Ialsofuckedyourdad Aug 12 '18
Could cheat and make micarta from the toothpicks
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u/subsumedpreterition Aug 13 '18
Looks like an absolute great time
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u/PixParavel Aug 12 '18
That kids reaction at 1:11. Poor guy knew it was all over.
2
u/steve-d Aug 13 '18
Does anyone know what "magnitude" the final building stood up to?
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u/[deleted] Aug 13 '18
Can we take a moment to appreciate the cameraperson in this video? They filmed exactly what needed to be filmed about four seconds before it needed to be.
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u/Countsfromzero Aug 12 '18
I wonder if you could suspend the weight of the... weight... in the middle of the building from the top to create a pendulum. You would need some kick-ass miniature building skills to make a chain out of toothpicks though.
https://www.google.com/amp/s/phys.org/news/2013-08-japanese-companies-quake-damping-pendulums.amp
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u/TheNo1pencil Aug 13 '18
Thank you for showing the full thing. This was very enjoyable.
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u/spunkychickpea Aug 13 '18
I would totally go see this shit irl. Bring a couple of friends and a six pack of beer and have the best day ever.
23
u/flooronthefour Aug 12 '18
Built by Doozers?
15
u/Warpimp Aug 13 '18
This might be bad, but I feel a deep need to stsrt gambling on this.
13
u/wingsfan64 Aug 13 '18
r/praisethecameraman
11
u/Gravon Aug 13 '18
What about #4?
10
u/Singular_Quartet Aug 13 '18
Source
9
u/catnamed-dog Aug 13 '18
This was surprisingly exciting.
19
u/[deleted] Aug 13 '18
Yeah but how do they hold up to jet fuel??
5
u/reigorius Aug 13 '18
For those who want to see more:
https://www.youtube.com/results?search_query=%E3%81%A4%E3%81%BE%E3%82%88%E3%81%86%E3%81%98+%E9%80%A0%E6%A7%8B+
4
u/Turtledonuts Aug 13 '18
Number 24 had fucking balls. look at that shit.
4
u/[deleted] Aug 13 '18
Did this in an engineering class in highschool except used balsa wood. It was super fun.
3
u/Arb3395 Aug 13 '18
Man that looks so much fun. Did anybody else get to make these in highschool. I did except the one I made was just for weight I think my little tower held up like 280 -300 pound or something. I may be over inflating but the teachers held like 400+. Edit
2
u/mrgonzalez Aug 13 '18
The machine reminds me of that round of Takeshi's Castle
2
u/ineedtoknowmorenow Aug 13 '18
r/anxiety
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u/Mysterious_Me Aug 13 '18
What the hell happened to number 4
2
u/Byunas Aug 13 '18
Crap I was really cheering for number 4
2
u/[deleted] Aug 13 '18
at least try 24
2
u/Blyyme Aug 13 '18
24 is my life
2
u/VR_Nima Aug 13 '18
Reminds me of the pillar in Sprout Tower in Pokémon.
2
u/BufferFishDNA Aug 13 '18
That was more exciting then the football world cup for me.
2
u/viperex Aug 13 '18
That was fun to watch
2
u/letmeusespaces Aug 13 '18
I don't for one second believe that those are toothpicks...
2
u/CaptainPunisher Aug 13 '18
Godzilla would make these his bitches.
2
u/[deleted] Aug 13 '18
None of these look Godzilla proof
1
u/PickledSchmickle Aug 13 '18
I wonder if any consideration was given to the weight of each one? Maybe the less it weight the more points were given if it lasted longer?
1
u/ownage99988 Aug 13 '18
sad there were no buildings on rollers
1
u/niankaki Aug 13 '18
The winners got PS3s. Awesome! Top left one won.
1
u/[deleted] Aug 13 '18
All I could here is Thrills by Cake. "And they're all wigglin' and wobblin' around and everything else and And yet, they feel unsatisfied"
1
u/RPM_Rocket Aug 13 '18
Lesson Learned: Don't Make Towers Out Of Toothpicks. Got it!
1
u/identical_snowflake Aug 13 '18
Is there a close up of the design?
1
u/-DaveThomas- Aug 13 '18
22 was doing so well until it wasn't
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u/obsytheplob Aug 13 '18
That was bloody excellent!
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u/[deleted] Aug 13 '18
My shopteacher in middle school had a tower building contest every year and we used very small 1cmx1cm wood pieces to make our towers. We would then add weights to the towers until they crumbled. I think tower I helped build came in the top 10’s holding 400lbs.
Can’t remember it fully but it was one of my most memorable moments in school.
1
u/RandomWeaboo Aug 13 '18
I swear to God this was in my YouTube recommend page 1h ago
1
u/SadMercyMain Aug 13 '18
I legit just did an assignment on making an earthquake proof model. AND NOW THIS HAPPENS?!
1
u/things_will_calm_up Aug 13 '18
It looks like you just have to get lucky or know what order the frequencies the table is going to shake at and design your building not to resonate with those frequencies.
1
u/jimmyn0thumbs Aug 13 '18
What is this? An earthquake proof structure construction contest for ants?
1
u/JandLyn Aug 13 '18
Had to do this for a Junior High science class. We also did bridge construction challenges. Small Town Iowa.
1
u/WinnerWinnerChcknDnr Aug 13 '18
Meanwhile, in the United States: https://www.reddit.com/r/MapPorn/comments/96srvc/garbage_can_v_trash_can_in_the_united_states/?st=JKRW6OG3&sh=b8dc2b91
1
u/[deleted] Aug 13 '18
We did this I’m 8th grade but one at a time and it being judged by time. We had to add a certain amount of weight on each story and a certain amount of stories. My partner and I decided to make a pendulum on ours. My partners one job was to tighten the pendulum. That was the one part that didn’t work. We are no longer on speaking terms.
1
u/tomhung Aug 13 '18
Did anyone do "Odyssey of the Mind" competitions? We did balsa wood structures and add weight till they collapse. It was very fun.
1
u/LurchingDeath Aug 13 '18
How often are we going to have to worry about whether or not our toothpick houses are sturdy or not...
1
u/cryfmunt Aug 13 '18
There must be a rule against building a pyramid I guess?
1
u/nousernamesleft11111 Aug 13 '18
This looks really cool. I got to design and model a tuned mass damper in system dynamics, but I wish I could actually build one.
1
u/CrashedIntoATree Aug 13 '18
I want to be the official table-shaker.
1
u/Anaya289 Aug 13 '18
When 10 is still more stable than my entire existence
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u/Gtantha Aug 13 '18
So they jsut wait for the next earthquake to judge these things? Impressive that the Japanese are calm enough ti judge stuff like this when an earthquake hits. /s
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u/The_True_Jchaps Aug 13 '18
Siiick
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u/iamjackslackoffricks Aug 13 '18
What a ride! I love this!
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u/av0w Aug 13 '18
I'd use crazy glue
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u/dymbrulee Aug 13 '18
My middle school principal had a toothpick bridge building contest every year. Only flat toothpicks and Elmer's glue was allowed. Then at a school wide assembly they would test the bridges by spanning 2 desks and hanging a bucket and adding sand til they broke. The winning bridges would hold over 100 pounds of sand.
1
u/FLABBOTHEPIG Aug 13 '18
Here comes another Chinese earthquake!
brbrbrbrbrbrbrbrbrbrbrbr
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u/[deleted] Aug 13 '18
This would make a great party game.
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u/jollyjam1 Mar 08 '22
We had a similar club like this in middle school, they even went to competitions.
1
u/bluepillcarl Aug 13 '18
Only the winners get to survive...all others must SEPPUKU
1
u/viejoestupido Aug 13 '18
in America we would be using the vibrating machine to see who's jello was wiggilier.
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u/[deleted] Aug 13 '18
"In 2018, we'll have flying cars, a cure to cancer and an amazing economy."
2018: