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Build “magic,” gravity-defying structures–with Legos, kite string, and physics

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Re: Build “magic,” gravity-defying structures–with Legos, kite string, and physics

#11

Post by lisper »

xwdv wrote: post #10

Would you enter a building held up by tensegrity? I feel that to build the next generation of super massive structures in the 21st century we will have to use tensegrity concepts.

If it was properly engineered, sure, why not? It would be no different in principle from driving over a suspension bridge.

Re: Build “magic,” gravity-defying structures–with Legos, kite string, and physics

#12

Post by magicalhippo »

huhtenberg wrote: post #2

https://en.wikipedia.org/wiki/Tensegrity This has been a "thing" on reddit for a couple of weeks now and with lots of people being bored right now the results were quite diverse and interesting: https://www.reddit.com/r/lego/comments/g2230l/lego_tensegrit... https://www.reddit.com/r/EngineeringPorn/comments/g05lld/i_b... https://www.reddit.com/r/pics/comments/g44sz8/my_first_attem... https://www.reddit.com/r/3Dprinti…

From Wikipedia there was a link to the SUPERball robot[1], pretty cool. But I wonder about the longevity of it, I assume they could use multiple wires per "strand" in case one breaks, but dust and sand seem like they could be big issues over time.

Still, pretty cool!

[1]: https://www.youtube.com/watch?v=hkzeE6BVNIk

Re: Build “magic,” gravity-defying structures–with Legos, kite string, and physics

#13

Post by RandomBacon »

lisper wrote: post #11
xwdv wrote: post #10

Would you enter a building held up by tensegrity? I feel that to build the next generation of super massive structures in the 21st century we will have to use tensegrity concepts.

If it was properly engineered, sure, why not? It would be no different in principle from driving over a suspension bridge.

I assume all buildibgs I enter are properly engineered, but sometimes they're not. Two cases that come to mind:

https://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse

http://www.slate.com/blogs/the_eye/2014/04/17/the_citicorp_t...

Both were essentially caused by people making assumptions. You would think such things would be thought through, but sometimes they're not.

Re: Build “magic,” gravity-defying structures–with Legos, kite string, and physics

#15

Post by cwilkes »

xwdv wrote: post #10

Would you enter a building held up by tensegrity? I feel that to build the next generation of super massive structures in the 21st century we will have to use tensegrity concepts.

You probably have already in a way:

https://www.concretenetwork.com/post-tension/basics.html

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