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This is an open hardware project.
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And it’s an open hardware project with no electronics to speak of.
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There are a few electronics. Let me give you the electronics.
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So, I wanna point this out, it's the direction open hardware is going.
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You wanna take one of those and pass them on?
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These is some lights.
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I don’t think we need that light. It's probably okay without it.
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[audience: alright for the video]
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Ok, cool.
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These things here are hexayurts, and these ones are Burning Man.
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And you can see, they are just, they are little houses, right.
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They are, sort of, housing-pod-things.
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And they’re incredibly easy to make.
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We'll just, right, take a look at them.
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I want to suggest that this is an example
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of open hardware taking a different direction.
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And this is the direction I think open hardware is going,
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that it’s becoming more and more like software,
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where you just casually hack together physical artifacts.
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And my speciality happens to be housing and infrastructure
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and sustainable developement,
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but you can do anything this way.
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So, let’s think about this,
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if we take laziness and impatience and hubris,
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instead of being for software,
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as a way of thinking about hardware. Right?
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What’s the lazy, impatient, you know, ambitious way
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of doing hardware systems. Right?
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So, these lights that I’m passing around,
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have not been formally announced as open hardware yet,
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but they are 7 dollars, right?
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Look at that thing. 7 dollars!
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[Audience: 7 dollars!] 7 dollars!
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Now, the difference that that makes,
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as an open hardware project,
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you can sell these as open hardware
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incredibly cheaply in the developing world, right?
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And, you know, that's not the direction we typically think of open hardware.
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Open hardware typically is microprocessors and all the rest of that stuff.
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No, there’s a different direction here.
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So, laziness, hubris and impatience, right?
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150 square-meters of buildings built by 6 guys in 2 days.
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Does that sound useful for CCC, maybe?
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[Audience: How many?]
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7 buildings: 1, 2, 3, 4, 5, 6, 7 buildings.
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Large, 150 square-meters between them, 6 guys in 2 days.
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And it wasn't really very hard work. Right?
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This is a radical breakthrough building technology. You know.
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This place is Maslowtopia,
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you can see in the bottom corner,
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you've got the google street view,
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you know, the map, they do a high-res picture of Burning Man every year.
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This was a huge camp with these units.
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I didn't even know these guys were building this thing.
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I just, after the event, I saw some pictures of this.
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They didn't ask me how to do anything.
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[Audience: They didn't ask your permission?]
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No, they didn't ask me how to do anything:
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they just downloaded the plans and built the damn things. Right?
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So it's an open hardware project
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in massive full-scale replication
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because it's really, really simple.
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And the simplicity, right - lazy, impatient, hubristic - right,
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the simplicity is what allows the idea spread.
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So how do you make a hexayurt?
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You need this very broad tape.
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You need to know how to make this thing called the tape anchor,
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which is like a, you know, like a knob,
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where you've got a special way of using rope to make a fastener.
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So the tape anchor is a special way of using tape to make a fastener.
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And then you need these polyiso panel material
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that they sell at any babas [?],
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and that's all there is to it.
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It's a really really simple system.
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And all of this stuff you would look on the internet,
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you can find the references for how to do these things.
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Hexayurt in wood.
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So, this really shows like how the thing is put together.
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The wall is just a whole 1.2 x 2.4 panel.
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And this is the standard size for all industrial sheet materials:
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cardboard, plastic, wood, metal, sandwich panels,
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can you think of anything else?
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It's just the standard industrial size for materials.
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The roof pieces are half of that size.
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So you take a piece, you cut in half. Right?
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If you happen to be making it in plywood,
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you can take, you see these wooden blocks, light coloured sections?
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So that's just a piece of 2-by-4 [wood]
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that's been cut with a 30 degree angle on it,
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and you screw the building together with those.
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And you're done!
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So, I mean, that's, thank you very much, that's the talk!
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[audience laughs]
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So, ok, there's a little more to it, right?
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But, you know, I want to make the point that, actually, you know,
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that picture is pretty much all there is to know about the basic hexayurt.
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It's that simple.
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If you happen to be making it using, you know, this kind of material,
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you need to get tape and you need to know how to make a tape anchor.
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If you're making it out of this kind of material,
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you need to know how to make these little wooden blocks,
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you need to know how to cut that much plywood and screw it.
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But really this is all there is.
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And then there's all the stuff [$$5:14$$ you worried] on top of it.
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But the basics are so incredibly simple, that right now, in 5 minutes,
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you've all aquired the basic knowledge of how to make hexayurts.
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And if you had to figure out the actual details
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to make them out of any given material,
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you know, you're smart people, it's not going to take you very long.
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It's an idea that spreads incredibly quickly.
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So, this is the first hexayurt that was ever built.
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You can see the solar panel that drives the cooling system.
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The swamp cooler.
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It's 1.2 meter squares that is made of, Burning Man 2003.
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God that's a great party!
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So, this is the configuration space of hexayurts, right?
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You’ve seen the basic ones in two materials.
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Geometry, the material choice and the construction technologies
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are the 3 big variables.
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So, this is the different kinds of hexayurts that exist:
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that's a six-foot hexayurt
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stretch hexayurt
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pentayurt, which has a nice steep angle on the side [?] for dealing with snow
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standard hexayurt
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stretch hexayurt
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double stretch
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double-height double-stretch, alright,
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and that's your configuration space.
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Obviously you could connect the damn things together any way you like.
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$$6:26$$. Big hive [worm?] type things pretty easy to do.
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[Audience: make a giant "C" out of that]
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Yes, you could make a giant "C" out of that pretty easily.
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You could make a bunch of small Cs. I mean ...
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[audience: "Does anybody see where this is going?"]
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(laughs)
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If you have enough hexayurts, you know,
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you could make a big C in any font you liked.
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[Audience: Now, what do we need to represent this form
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that you see on the window behind you?]
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One of those? I if you've got 4000 people coming, right?,
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at 5 people per hexayurt gives you enough hexayurts
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to do realize quite a high-res version.
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[Audience: do you know that the original size of c-base
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has a diameter of a mile?]
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It's about the size of Burning Man. Entirely reasonable.
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[332 people]
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That's fine. You wind up with 400 hexayurts,
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that's a 20x20 pixel array, you'll be fine!
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So, other ways of constructing these things, right?
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This is a kind that you make instead of with panels, with tubes.
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So you have a frame like this.
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The advantage this has over the standard geodesic dome
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is there are only 2 connectors,
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there are only two section pieces,
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so the triangles are full length,
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and the hexagon around the top are missing a few inches per piece,
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a few centimeters per piece.
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So it's only two components.
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And the walls are vertical,
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so you could take two of these units and connect them directly together
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with no connection problem.
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$$8:02$$ So you can actually have very modular pieces,
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and the materials are sized in such a way
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that you can make the fabric cover really easily.
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This is the fabric cover instructions.
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And you could make zero waste cover,
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if you want to go down the route of having frame.
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We're also at the point, cos the project started by 2003,
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and by 2011 we've also got new designs that came from other people.
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This is a thing called the h13
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and you can see it's still using full sheets and half sheets.
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And there's this corner thing you do at the front
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that gives you a full 2.4 meter entryway.
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Cos the conventional hexayurt has a low entry way,
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which is a pain in the arse.
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This one has a high entry way so it's easy to walk in and out
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and it's only one more panel.
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This is one that was made for a party for Canada in the middle of winter.
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It's actually quite a clever piece of engineering.
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It's 2 sheets of thin plywood sandwiched around some insulation foam
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and you see the yellow band around the side?
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It's the webbing strap that you use in a truck to hold the load on it.
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That's being used as a tension rim
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to stop the building fall into pieces.
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So probably you'd open that strap
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and you take the building down again.
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[Audience: Pure genius!]
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Right? But, you know, that stuff is like 20 dollars a strap
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and it's a breaking strain of 8 tons, so why not use it for construction?
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Laziness, hubris and impatience!
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Can you imagine a lazier building for the middle of Canada?
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Could it possibly have more impatience?
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$$9:30$$... building materials … strap off a truck, dude!
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Then, take a look at this structure.
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This is longer on the hubris side.
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So there's your standard hexayurt in the middle,
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and then there's these two dirty grey big domes.
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Look at the size of these things. 45 square meters for 30 sheets worth of material
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so the ratio of material to surface area:
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Each board is 3 meters,
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it needs 30 boards so you get 90 meters worth of materials for 45 meters of space
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{10:00} The thing is basically a perfect hemisphere.
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And it only uses whole boards and half boards.
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So all those shapes are 1.2 x 2.4 meter boards
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either cut in half or used full. Right?
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Woo! Suddenly you're beginning to talk about really big construction
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with zero waste and no screwing around.
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And because all of these hexayurts are using the same components,
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imagine you've got a standard kit of parts,
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and you rearrange the buildings you need for a given event,
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now we need lots of small ones, now we need some big domes.
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It's all the same connectors, it's all the same panel sizes.
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It's a flexible architecture. Interesting things happen.
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And I want to make a point:
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The reason that Buckminster Fuller didn't get to this stuff is that
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Buckminster Fuller was optimising for the wrong thing.
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He was optimising for minimum mass
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which is of course what you want in a space station.
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If you've got a mass-dependent drive technology in zero-g,
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mass is your critical factor.
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But, if you're operating on the ground in the gravity well $$11:04$$
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with standard materials from an industrial supply chain,
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you’re looking for a different optimisation.
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You don't want minimal mass, you want minimal waste.
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And that means using a different branch of maths,
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in this case it's concave tiling.
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So it's the same mathematics as for things like Penrose tiles
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to figure out wether you can get it tight.
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We get back to the hubris part:
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I think if we'd had this technology in the 1960's,
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the hippies would have won.
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Because the problem with geodesic domes was that
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the damn thing's really hard to build and would always leaked!
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So all the communes failed because they couldn't afford to build houses! Right?
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[Audience: (laughs) Interesting theory!]
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Places like Drop City, all of the houses leaked,
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everybody was unhappy,
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people just decided to go back to the suburbs
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because they wanted a house that didn't leak.
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I'm telling you: this is the technology of victory.
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This is how the freaks take over the Earth.
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You know, look at the size of that dome, right?
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There are plans on thingiverse
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to download laser-cut plans to make these domes,
245
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if you just look for "nearodesic" or "hexayurt".
246
00:12:07,946 --> 00:12:10,407
Look at how big [compared to] the standard hexayurt.
247
00:12:10,407 --> 00:12:13,704
It's huge. You should $$12:11$$ build four of them [?]
248
00:12:13,704 --> 00:12:18,033
You know, this notion of having a single panel repository,
249
00:12:18,033 --> 00:12:19,088
where you can reconfigure the buildings if you want,
250
00:12:19,088 --> 00:12:20,216
using the same basic components,
251
00:12:20,216 --> 00:12:24,176
I think that is the way that this stuff is gonna go.
252
00:12:24,176 --> 00:12:26,972
I don't know how to make the panel connectors yet, to make it possible,
253
00:12:26,972 --> 00:12:29,106
but when we figure out how to do that,
254
00:12:29,106 --> 00:12:33,186
then imagine just being able to rent from some central service
255
00:12:33,186 --> 00:12:36,878
you know, 27 panels, for 4 domes you're going to use for the weekend
256
00:12:36,878 --> 00:12:38,677
and then give them back on monday morning.
257
00:12:38,693 --> 00:12:39,778
Configurable building.
258
00:12:39,778 --> 00:12:42,892
So we've covered the geometry.
259
00:12:42,892 --> 00:12:45,836
Everybody agrees pretty large configurations based on geometry?
260
00:12:45,836 --> 00:12:47,048
Wait till we get to the materials.
261
00:12:47,048 --> 00:12:51,344
[sound-engineer: Please, get closer to the microphone. Thank you.]
262
00:12:51,344 --> 00:12:54,107
So these are the materials we've done already.
263
00:12:54,107 --> 00:12:56,452
And it's basically anything we could get our hands on,
264
00:12:56,452 --> 00:13:01,862
you take a look at it, "Yeah, I could make a hexayurt out of that".
265
00:13:01,862 --> 00:13:05,415
the connection technology changes a little depending on your material.
266
00:13:05,415 --> 00:13:07,832
Ok, you know, this one is heavy, we're gonna use bolts.
267
00:13:07,832 --> 00:13:08,983
That one is light, we're gonna use tape.
268
00:13:08,983 --> 00:13:12,126
Maybe we could make some more metal connectors.
269
00:13:12,126 --> 00:13:14,633
You just sort of look at your material, you figure out your connector,
270
00:13:14,633 --> 00:13:18,116
and you apply the connector to the material, and there's your hexayurt.
271
00:13:18,116 --> 00:13:20,183
We haven't done very much with metal,
272
00:13:20,183 --> 00:13:22,551
because it's expensive and it's a pain in the arse.
273
00:13:22,551 --> 00:13:25,523
We haven't done very much with structured insulating panels,
274
00:13:25,523 --> 00:13:28,426
because they are expensive and it's a pain in the arse.
275
00:13:28,426 --> 00:13:31,166
The really hot thing we haven't done yet,
276
00:13:31,166 --> 00:13:34,510
that I'm really eager to do, is ferrocement or spray concrete.
277
00:13:34,510 --> 00:13:36,089
You know concrete sprays?
278
00:13:36,089 --> 00:13:37,482
[Audience Yeah]
279
00:13:37,482 --> 00:13:38,478
Ok, so, imagine you -
280
00:13:38,478 --> 00:13:39,141
[Audience: No, I don't know]
281
00:13:39,141 --> 00:13:42,394
Ok, so you put concrete in a big sprayer and you spray it.
282
00:13:42,394 --> 00:13:43,007
[audience laughs]
283
00:13:43,007 --> 00:13:46,677
It turns out to be a lot harder than that in practice.
284
00:13:46,677 --> 00:13:48,372
In fact there are companies that come and
285
00:13:48,372 --> 00:13:50,415
spray your things with concrete for you, right?
286
00:13:50,415 --> 00:13:51,622
Your neighbour has a car that's really annoying you,
287
00:13:51,622 --> 00:13:54,411
you come, you tell 'em which car and you have it sprayed.
288
00:13:54,411 --> 00:13:55,068
[audience laughs]
289
00:13:55,068 --> 00:14:00,586
So you build one of these hexayurts out of this light-weight foam material.
290
00:14:00,586 --> 00:14:02,722
You spray with concrete on the outside,
291
00:14:02,722 --> 00:14:04,742
you spray with concrete on the inside,
292
00:14:04,742 --> 00:14:08,182
now you have a highly insulated concrete permanent building.
293
00:14:08,198 --> 00:14:11,244
And it's only 1 cm of concrete inside and out,
294
00:14:11,244 --> 00:14:13,055
so the building is still relatively light,
295
00:14:13,055 --> 00:14:16,538
so you can do things like put hexayurts on top of existing buildings. Right?
296
00:14:16,538 --> 00:14:19,979
Now, you know, this has potential, nobody's done it yet.
297
00:14:19,979 --> 00:14:26,592
Actually, so, there's something about printing designs on corrugated plastic.
298
00:14:26,592 --> 00:14:27,892
Highly printable materials have [?] corrugated plastics.
299
00:14:27,892 --> 00:14:30,972
You can print anything you want outside the hexayurt.
300
00:14:30,972 --> 00:14:34,928
So imagine taking a picture of the place,
301
00:14:34,928 --> 00:14:37,134
doing the 3D projection to know exactly
302
00:14:37,134 --> 00:14:39,107
what you've got to put on each side of the hexayurt,
303
00:14:39,107 --> 00:14:41,058
and then printing a camouflaged hexayurt
304
00:14:41,058 --> 00:14:41,905
which is completely invisible
305
00:14:41,905 --> 00:14:43,149
because it looks like you are looking straight through it.
306
00:14:43,149 --> 00:14:46,863
All of this is possible.
307
00:14:46,863 --> 00:14:48,999
Ok, construction techniques.
308
00:14:48,999 --> 00:14:52,134
[audience: That only works from a single point of view.]
309
00:14:52,134 --> 00:14:54,591
Well, maybe, the eye is very lazy,
310
00:14:54,591 --> 00:14:57,126
so it's posible that we'd get something that works from multiple points of view
311
00:14:57,126 --> 00:15:00,772
and it looked a little bit wrong as you walk along one side
312
00:15:00,772 --> 00:15:02,724
and you wouldn't really notice.
313
00:15:02,724 --> 00:15:05,515
{15:00} But I don't know: nobody's tried it so we've got to do some experiments, right?
314
00:15:05,515 --> 00:15:09,572
So, there are lots of different ways of doing this stuff
315
00:15:09,572 --> 00:15:11,708
depending on whether you want to be just a one-off unit,
316
00:15:11,708 --> 00:15:13,682
whether if you want it to be folding,
317
00:15:13,682 --> 00:15:15,364
whether you want it to be folding as a single component,
318
00:15:15,364 --> 00:15:19,603
again it's a big configuration space.
319
00:15:19,603 --> 00:15:22,459
This is a completely folding hexayurt unit
320
00:15:22,459 --> 00:15:26,314
that was built by some German army dudes in Stuttgart for an exercise.
321
00:15:26,314 --> 00:15:28,636
[Audience laughs]
322
00:15:28,636 --> 00:15:30,772
Oh, yeah, the military love this hexayurt.
323
00:15:30,772 --> 00:15:33,419
They are super into them.
324
00:15:33,419 --> 00:15:36,205
Which is a long story.
325
00:15:36,205 --> 00:15:40,153
So, you know, that building thing is a single module
326
00:15:40,153 --> 00:15:44,565
and I've got some video in here I can show you the video in a second.
327
00:15:44,565 --> 00:15:49,441
Or if you just go to http://hexayurt.com/fold there's all the folding hexayurts there.
328
00:15:49,441 --> 00:15:51,531
This a different kind of folding hexayurt
329
00:15:51,531 --> 00:15:54,549
so this one is much bigger and it's two components:
330
00:15:54,549 --> 00:15:57,614
The triangles are the roof and the walls are the walls -
331
00:15:57,614 --> 00:16:00,772
rectangles are the walls.
332
00:16:00,772 --> 00:16:03,360
So the whole roof is this single star thing
333
00:16:03,360 --> 00:16:07,725
and then you pull this star-thing open and there is your roof.
334
00:16:07,725 --> 00:16:11,453
And this happens to be built inside a gigantic geodesic dome in Eindhoven.
335
00:16:11,453 --> 00:16:16,074
$$16:11$$ Which is built ... might remember ... Red Cross ...
336
00:16:16,074 --> 00:16:20,114
So, this is kind of where I see the future of this whole project, right.
337
00:16:20,114 --> 00:16:23,205
Because it's open hardware it's beginning to be comercialized.
338
00:16:23,205 --> 00:16:24,972
There is a resale market in America for hexayurts.
339
00:16:24,972 --> 00:16:27,963
So people build them for Burning Man and sell them afterwards
340
00:16:27,963 --> 00:16:32,955
and the market value seems to be 500$ a unit.
341
00:16:32,955 --> 00:16:36,299
Getting to this point where you can spray the damn things and make them permanent,
342
00:16:36,299 --> 00:16:38,179
it's gonna be the way to do this.
343
00:16:38,179 --> 00:16:41,384
That opens up a whole new set of terrain.
344
00:16:41,384 --> 00:16:44,844
Also rural squatting, so you take a van,
345
00:16:44,844 --> 00:16:46,811
you put 12 hexayurts in the back as a foldup
346
00:16:46,811 --> 00:16:47,396
You drive out to an abandoned farm.
347
00:16:47,396 --> 00:16:50,114
You live in them for 3 months.
348
00:16:50,114 --> 00:16:52,439
Somebody comes and servest you a court order and says you must leave.
349
00:16:52,439 --> 00:16:55,641
You put them back in the van, and you drive 30 miles down the road.
350
00:16:55,641 --> 00:16:59,913
It's all [?]
351
00:16:59,913 --> 00:17:01,678
This is also a really important detail:
352
00:17:01,678 --> 00:17:04,882
Ultraviolet light eats everything.
353
00:17:04,882 --> 00:17:08,714
So the big advantage of the hexayurt is that we use a foil surface.
354
00:17:08,714 --> 00:17:11,361
You know these foil surface panels.
355
00:17:11,361 --> 00:17:14,124
That stuff will last a really long time in the outdoors.
356
00:17:14,124 --> 00:17:17,003
So the ability to have rigid buildings that last a long time
357
00:17:17,003 --> 00:17:19,488
because they've got an appropriate UV protective surface
358
00:17:19,488 --> 00:17:21,508
is really key to getting this stuff to work,
359
00:17:21,508 --> 00:17:23,458
if you want multi-year buildings.
360
00:17:23,458 --> 00:17:27,824
Because UV will ruin any kind of plastic eventually.
361
00:17:27,824 --> 00:17:30,958
And this thin shell concrete thing, you know, that's gonna come.
362
00:17:30,958 --> 00:17:32,561
So that's the hexayurt part.
363
00:17:32,561 --> 00:17:35,765
Let me show you two other cool things.
364
00:17:35,765 --> 00:17:42,313
Cheap ID is a barcode and crypto-based solution for managing digital identites.
365
00:17:42,313 --> 00:17:44,263
You take a passport.
366
00:17:44,263 --> 00:17:47,328
You generate some digital signature that you have seen the passport.
367
00:17:47,328 --> 00:17:48,922
You put the digital signature on a piece of paper
368
00:17:48,922 --> 00:17:52,135
together with a jpeg of somebody's face
369
00:17:52,135 --> 00:17:54,202
And then you have an anonymous digital identity
370
00:17:54,202 --> 00:17:56,611
that's still $$17.57$$ [pa??] by nation-state credentials.
371
00:17:56,611 --> 00:17:57,582
What you would do with that, I don't know.
372
00:17:57,582 --> 00:18:01,144
But you’re smart people you'll find a use.
373
00:18:01,144 --> 00:18:03,443
Got be some use for it, right,
374
00:18:03,443 --> 00:18:06,694
like ID-cards for things where you want people to get in
375
00:18:06,694 --> 00:18:08,383
but you don't want necesarly to reveal anything
376
00:18:08,383 --> 00:18:10,788
other than the fact that somebody’s allowed there.
377
00:18:10,788 --> 00:18:17,131
And there's this thing which is the dartboard of death.
378
00:18:17,131 --> 00:18:19,638
ODeath.
379
00:18:19,638 --> 00:18:29,627
[audience: Yeah I perfectly understood that part,
380
00:18:29,627 --> 00:18:32,080
you can also call it the dartboard of doom]
381
00:18:32,080 --> 00:18:35,371
Dartboard of doom.
382
00:18:35,371 --> 00:18:38,184
(voices acting like Lord vader)
383
00:18:38,184 --> 00:18:39,671
Let me explain this before we get silly.
384
00:18:39,671 --> 00:18:44,775
There's only six ways people die:
385
00:18:44,775 --> 00:18:47,793
too hot, too cold, hunger, thirst, illness, injury.
386
00:18:47,793 --> 00:18:51,114
And the services that protect you from dying of these things
387
00:18:51,114 --> 00:18:54,155
are split through different levels of society.
388
00:18:54,155 --> 00:18:57,638
Individual person, household, village,
389
00:18:57,638 --> 00:19:03,536
community or city, region, country and world, right.
390
00:19:03,536 --> 00:19:06,694
So you have this notion of a stack of interlocking services
391
00:19:06,694 --> 00:19:08,482
that provides the essential services.
392
00:19:08,482 --> 00:19:11,129
This is a design tool that I've used when I was thinking about
393
00:19:11,129 --> 00:19:12,894
doing things for war refugees camps.
394
00:19:12,894 --> 00:19:14,635
So it's a way of figuring out that we have actually
395
00:19:14,635 --> 00:19:18,470
covered out all the essential needs within the concept of core technologies.
396
00:19:18,470 --> 00:19:22,368
So this is sitting out there, again, this is under the creative commons license.
397
00:19:22,368 --> 00:19:25,386
It models everything up to and including state failures.
398
00:19:25,386 --> 00:19:28,405
There is no software support for it yet, so we do it all with spreadsheets.
399
00:19:28,405 --> 00:19:31,725
Spreadsheets suck.
400
00:19:31,725 --> 00:19:34,535
So this is a really useful analysis tool,
401
00:19:34,535 --> 00:19:36,973
and its the kind of thing that we are tryin to begin to think
402
00:19:36,973 --> 00:19:39,295
to develop some kind of software to support.
403
00:19:39,295 --> 00:19:42,430
If anyone’s interested in this stuff, give me a shout.
404
00:19:42,430 --> 00:19:46,702
So, that was it.
405
00:19:46,702 --> 00:19:49,001
I'll turn off recorders and I'll take questions?
406
00:19:49,001 --> 00:19:51,486
[voice: Yes, sure]
407
00:19:51,486 --> 00:19:52,975
You want to see the folding videos?
408
00:19:52,975 --> 00:20:00,054
OK, hang a second.
409
00:20:00,054 --> 00:20:04,071
I don't think I have put this machine on the network.
410
00:20:04,071 --> 00:20:52,383
(silence)
411
00:20:52,383 --> 00:21:04,083
There's the crap animation GIF
412
00:21:04,099 --> 00:21:06,922
Have you seen this by the way?
413
00:21:06,922 --> 00:21:15,193
It's a 15 euro USB chargeable, awful awful horrible quality loud-speaker.
414
00:21:15,193 --> 00:21:18,051
But they are incredibly loud and they're dirt cheap.
415
00:21:18,051 --> 00:21:24,970
Now I can show you, let's see...
416
00:21:24,970 --> 00:21:28,081
So this is the German army dudes video.
417
00:21:28,081 --> 00:21:40,129
(silence)
418
00:21:40,129 --> 00:21:51,870
{21:50 or so} What? No! Go away!
419
00:21:51,870 --> 00:21:55,318
[video: Shall we try again (laughs).
420
00:21:55,318 --> 00:21:59,869
One of these days, we'll get just the right angle
421
00:21:59,869 --> 00:22:01,703
and we’ll understand how to make it work,
422
00:22:01,703 --> 00:22:06,208
and once we understand why, then it will be easy.
423
00:22:06,208 --> 00:22:11,305
Understanding counts, understanding counts.
424
00:22:11,305 --> 00:22:28,545
open-close, one-two-three]
425
00:22:28,545 --> 00:22:33,886
It’s called polyiso, polyiso.
426
00:22:33,886 --> 00:22:35,043
[So, what makes it so hard?]
427
00:22:35,043 --> 00:22:35,817
It's a cheap insulation board.
428
00:22:35,817 --> 00:22:41,734
[I don't know either, that's why I'm asking you.
429
00:22:41,734 --> 00:22:52,230
Ok, so let’s give that a try.
430
00:22:52,230 --> 00:22:58,081
Yes, oo, ok, you got it.
431
00:22:58,081 --> 00:23:01,053
Now, what did we do that made it easy that time?
432
00:23:01,053 --> 00:23:03,468
[mumble] oposite ends [?]]
433
00:23:03,468 --> 00:23:06,417
This is the red cross, one,
434
00:23:06,417 --> 00:23:09,459
The prototype we did for the Red Cross.
435
00:23:09,459 --> 00:23:15,264
Sorry it's an animated GIF, there's video but it's really slow.
436
00:23:15,264 --> 00:23:22,253
This is a smaller size that someone did at Burning Man.
437
00:23:22,253 --> 00:23:53,368
(silence)
438
00:23:53,368 --> 00:24:09,413
And that's -
439
00:24:09,413 --> 00:24:16,575
{24:10} [Roof herd - retreat! Not through the puddle.
440
00:24:16,575 --> 00:24:17,465
Your feet are gonna get wet.
441
00:24:17,465 --> 00:24:18,806
Go around, go around!
442
00:24:18,806 --> 00:24:21,170
Oh, what are we gonna do! Okey!]
443
00:24:21,170 --> 00:24:26,201
So this one we had material that was 3 meters by 1.8 meters.
444
00:24:26,201 --> 00:24:30,404
So we modified the design slightly and wound up with this huge structure.
445
00:24:30,404 --> 00:24:32,935
It's like 24 or 30 square meters in size.
446
00:24:32,935 --> 00:24:34,490
Just enormous.
447
00:24:34,490 --> 00:24:45,195
[wall ... 1, 2, 3, 4, 5 ... that will be the problem ...]
448
00:24:45,195 --> 00:24:51,910
There's the sixth side! [wall ... Okey?]
449
00:24:51,926 --> 00:24:56,967
[Does that look about right? Looks about right to me.
450
00:24:56,967 --> 00:24:59,429
Ok, so, roof folks!
451
00:24:59,429 --> 00:25:00,845
Now, here we're gonna have a bit of a problem
452
00:25:00,845 --> 00:25:04,723
because we don’t want the bottom of the roof to get wet, do we?
453
00:25:04,723 --> 00:25:10,133
So we're gonna get everybody and we're gonna open the roof in mid-air. Ok?
454
00:25:10,133 --> 00:25:12,336
Does that sound remotely possible?]
455
00:25:12,351 --> 00:25:13,784
So this is another clever thing that we've learned.
456
00:25:13,784 --> 00:25:17,122
Which is what I call "gang carry".
457
00:25:17,122 --> 00:25:19,212
So, if everybody involved in the lift is carrying
458
00:25:19,212 --> 00:25:22,556
less than about 10 kilos, maybe 15,
459
00:25:22,556 --> 00:25:25,690
you get very very fine motor control of the lift,
460
00:25:25,690 --> 00:25:28,128
regardless of how heavy the object is.
461
00:25:28,128 --> 00:25:31,286
So you can actually take a hexayurt that's made of plywood, right?
462
00:25:31,286 --> 00:25:34,955
It's 12 sheets of plywood, 3/4 of an inch thick,
463
00:25:34,955 --> 00:25:38,717
and you can lift it with 4 people or 3 people on each side,
464
00:25:38,717 --> 00:25:41,457
so you got a gang of 18-25 people doing the lift,
465
00:25:41,457 --> 00:25:43,593
and you can just pick them up and walk with them
466
00:25:43,593 --> 00:25:44,777
because it's got so many people lifting it
467
00:25:44,777 --> 00:25:47,262
that each individual person is only taking a little weight.
468
00:25:47,262 --> 00:25:52,440
And that turns out to be a important technique light-weight construction.
469
00:25:52,440 --> 00:25:54,181
And it's very hard to get people to do
470
00:25:54,181 --> 00:25:57,223
because everybody expects lifting a heavy object to be hard work.
471
00:25:57,223 --> 00:26:01,890
And the idea of using so many people to lift it the heavy object becomes easy.
472
00:26:01,890 --> 00:26:11,550
People can’t get their heads around until they've done it.
473
00:26:11,550 --> 00:26:13,872
Everybody's looking confused: "shouldn’t this be heavier?
474
00:26:13,872 --> 00:26:18,678
What are we supposed to be doing here?"
475
00:26:18,678 --> 00:26:20,164
I and then you start moving
476
00:26:20,164 --> 00:26:31,774
and instinctively everybody tends to coordinate and it just sort of works.
477
00:26:31,774 --> 00:26:40,427
(mumble) See, we‘re on ice here. It's quite -
478
00:26:40,427 --> 00:26:41,892
[Now comes the tricky part.]
479
00:26:41,892 --> 00:26:45,474
So people have to feel off the front [?] run around,
480
00:26:45,474 --> 00:26:48,632
go inside, then take the [?] back again.
481
00:26:48,632 --> 00:26:51,372
It is very slow, very careful movement.
482
00:26:51,372 --> 00:26:52,812
But you can do it even in plywood,
483
00:26:52,812 --> 00:27:04,292
even if the material is really heavy, it still works.
484
00:27:04,292 --> 00:27:08,415
[Audience: I see. No door?]
485
00:27:08,415 --> 00:27:14,669
No, you don’t do windows and doors in hexayurts, so we say.
486
00:27:14,684 --> 00:27:17,127
So, it’s a kind of ritual,
487
00:27:17,127 --> 00:27:19,639
putting the roof on,
488
00:27:19,639 --> 00:27:20,597
taping the roof in place,
489
00:27:20,597 --> 00:27:22,292
and then cutting the door.
490
00:27:22,292 --> 00:27:25,645
We kind of do if for fun, but it’s a really nice moment.
491
00:27:25,645 --> 00:27:27,593
[audience: ???]
492
00:27:27,593 --> 00:27:37,765
If you've got a space station you can use transport ... fine.
493
00:27:37,765 --> 00:27:40,929
[I have a question.
494
00:27:40,929 --> 00:27:49,613
for the geodesics stuff ... material]
495
00:27:49,613 --> 00:27:53,323
I’ll tell you what:
496
00:27:53,323 --> 00:27:55,164
when I turn off the cameras and recorders
497
00:27:55,164 --> 00:27:57,182
you guys be comfortable and ask me questions,
498
00:27:57,182 --> 00:27:58,803
then we’ll take questions.
499
00:27:58,803 --> 00:28:02,377
So, thank you!