WEBVTT
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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,
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if you just look for "nearodesic" or "hexayurt".
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Look at how big [compared to] the standard hexayurt.
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It's huge. You should $$12:11$$ build four of them [?]
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You know, this notion of having a single panel repository,
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where you can reconfigure the buildings if you want,
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using the same basic components,
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I think that is the way that this stuff is gonna go.
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I don't know how to make the panel connectors yet, to make it possible,
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but when we figure out how to do that,
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then imagine just being able to rent from some central service
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you know, 27 panels, for 4 domes you're going to use for the weekend
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and then give them back on monday morning.
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Configurable building.
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So we've covered the geometry.
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Everybody agrees pretty large configurations based on geometry?
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Wait till we get to the materials.
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[sound-engineer: Please, get closer to the microphone. Thank you.]
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So these are the materials we've done already.
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And it's basically anything we could get our hands on,
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you take a look at it, "Yeah, I could make a hexayurt out of that".
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the connection technology changes a little depending on your material.
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Ok, you know, this one is heavy, we're gonna use bolts.
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That one is light, we're gonna use tape.
00:13:08.983 --> 00:13:12.126
Maybe we could make some more metal connectors.
00:13:12.126 --> 00:13:14.633
You just sort of look at your material, you figure out your connector,
00:13:14.633 --> 00:13:18.116
and you apply the connector to the material, and there's your hexayurt.
00:13:18.116 --> 00:13:20.183
We haven't done very much with metal,
00:13:20.183 --> 00:13:22.551
because it's expensive and it's a pain in the arse.
00:13:22.551 --> 00:13:25.523
We haven't done very much with structured insulating panels,
00:13:25.523 --> 00:13:28.426
because they are expensive and it's a pain in the arse.
00:13:28.426 --> 00:13:31.166
The really hot thing we haven't done yet,
00:13:31.166 --> 00:13:34.510
that I'm really eager to do, is ferrocement or spray concrete.
00:13:34.510 --> 00:13:36.089
You know concrete sprays?
00:13:36.089 --> 00:13:37.482
[Audience Yeah]
00:13:37.482 --> 00:13:38.478
Ok, so, imagine you -
00:13:38.478 --> 00:13:39.141
[Audience: No, I don't know]
00:13:39.141 --> 00:13:42.394
Ok, so you put concrete in a big sprayer and you spray it.
00:13:42.394 --> 00:13:43.007
[audience laughs]
00:13:43.007 --> 00:13:46.677
It turns out to be a lot harder than that in practice.
00:13:46.677 --> 00:13:48.372
In fact there are companies that come and
00:13:48.372 --> 00:13:50.415
spray your things with concrete for you, right?
00:13:50.415 --> 00:13:51.622
Your neighbour has a car that's really annoying you,
00:13:51.622 --> 00:13:54.411
you come, you tell 'em which car and you have it sprayed.
00:13:54.411 --> 00:13:55.068
[audience laughs]
00:13:55.068 --> 00:14:00.586
So you build one of these hexayurts out of this light-weight foam material.
00:14:00.586 --> 00:14:02.722
You spray with concrete on the outside,
00:14:02.722 --> 00:14:04.742
you spray with concrete on the inside,
00:14:04.742 --> 00:14:08.182
now you have a highly insulated concrete permanent building.
00:14:08.198 --> 00:14:11.244
And it's only 1 cm of concrete inside and out,
00:14:11.244 --> 00:14:13.055
so the building is still relatively light,
00:14:13.055 --> 00:14:16.538
so you can do things like put hexayurts on top of existing buildings. Right?
00:14:16.538 --> 00:14:19.979
Now, you know, this has potential, nobody's done it yet.
00:14:19.979 --> 00:14:26.592
Actually, so, there's something about printing designs on corrugated plastic.
00:14:26.592 --> 00:14:27.892
Highly printable materials have [?] corrugated plastics.
00:14:27.892 --> 00:14:30.972
You can print anything you want outside the hexayurt.
00:14:30.972 --> 00:14:34.928
So imagine taking a picture of the place,
00:14:34.928 --> 00:14:37.134
doing the 3D projection to know exactly
00:14:37.134 --> 00:14:39.107
what you've got to put on each side of the hexayurt,
00:14:39.107 --> 00:14:41.058
and then printing a camouflaged hexayurt
00:14:41.058 --> 00:14:41.905
which is completely invisible
00:14:41.905 --> 00:14:43.149
because it looks like you are looking straight through it.
00:14:43.149 --> 00:14:46.863
All of this is possible.
00:14:46.863 --> 00:14:48.999
Ok, construction techniques.
00:14:48.999 --> 00:14:52.134
[audience: That only works from a single point of view.]
00:14:52.134 --> 00:14:54.591
Well, maybe, the eye is very lazy,
00:14:54.591 --> 00:14:57.126
so it's posible that we'd get something that works from multiple points of view
00:14:57.126 --> 00:15:00.772
and it looked a little bit wrong as you walk along one side
00:15:00.772 --> 00:15:02.724
and you wouldn't really notice.
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?
00:15:05.515 --> 00:15:09.572
So, there are lots of different ways of doing this stuff
00:15:09.572 --> 00:15:11.708
depending on whether you want to be just a one-off unit,
00:15:11.708 --> 00:15:13.682
whether if you want it to be folding,
00:15:13.682 --> 00:15:15.364
whether you want it to be folding as a single component,
00:15:15.364 --> 00:15:19.603
again it's a big configuration space.
00:15:19.603 --> 00:15:22.459
This is a completely folding hexayurt unit
00:15:22.459 --> 00:15:26.314
that was built by some German army dudes in Stuttgart for an exercise.
00:15:26.314 --> 00:15:28.636
[Audience laughs]
00:15:28.636 --> 00:15:30.772
Oh, yeah, the military love this hexayurt.
00:15:30.772 --> 00:15:33.419
They are super into them.
00:15:33.419 --> 00:15:36.205
Which is a long story.
00:15:36.205 --> 00:15:40.153
So, you know, that building thing is a single module
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.
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.
00:15:49.441 --> 00:15:51.531
This a different kind of folding hexayurt
00:15:51.531 --> 00:15:54.549
so this one is much bigger and it's two components:
00:15:54.549 --> 00:15:57.614
The triangles are the roof and the walls are the walls -
00:15:57.614 --> 00:16:00.772
rectangles are the walls.
00:16:00.772 --> 00:16:03.360
So the whole roof is this single star thing
00:16:03.360 --> 00:16:07.725
and then you pull this star-thing open and there is your roof.
00:16:07.725 --> 00:16:11.453
And this happens to be built inside a gigantic geodesic dome in Eindhoven.
00:16:11.453 --> 00:16:16.074
$$16:11$$ Which is built ... might remember ... Red Cross ...
00:16:16.074 --> 00:16:20.114
So, this is kind of where I see the future of this whole project, right.
00:16:20.114 --> 00:16:23.205
Because it's open hardware it's beginning to be comercialized.
00:16:23.205 --> 00:16:24.972
There is a resale market in America for hexayurts.
00:16:24.972 --> 00:16:27.963
So people build them for Burning Man and sell them afterwards
00:16:27.963 --> 00:16:32.955
and the market value seems to be 500$ a unit.
00:16:32.955 --> 00:16:36.299
Getting to this point where you can spray the damn things and make them permanent,
00:16:36.299 --> 00:16:38.179
it's gonna be the way to do this.
00:16:38.179 --> 00:16:41.384
That opens up a whole new set of terrain.
00:16:41.384 --> 00:16:44.844
Also rural squatting, so you take a van,
00:16:44.844 --> 00:16:46.811
you put 12 hexayurts in the back as a foldup
00:16:46.811 --> 00:16:47.396
You drive out to an abandoned farm.
00:16:47.396 --> 00:16:50.114
You live in them for 3 months.
00:16:50.114 --> 00:16:52.439
Somebody comes and servest you a court order and says you must leave.
00:16:52.439 --> 00:16:55.641
You put them back in the van, and you drive 30 miles down the road.
00:16:55.641 --> 00:16:59.913
It's all [?]
00:16:59.913 --> 00:17:01.678
This is also a really important detail:
00:17:01.678 --> 00:17:04.882
Ultraviolet light eats everything.
00:17:04.882 --> 00:17:08.714
So the big advantage of the hexayurt is that we use a foil surface.
00:17:08.714 --> 00:17:11.361
You know these foil surface panels.
00:17:11.361 --> 00:17:14.124
That stuff will last a really long time in the outdoors.
00:17:14.124 --> 00:17:17.003
So the ability to have rigid buildings that last a long time
00:17:17.003 --> 00:17:19.488
because they've got an appropriate UV protective surface
00:17:19.488 --> 00:17:21.508
is really key to getting this stuff to work,
00:17:21.508 --> 00:17:23.458
if you want multi-year buildings.
00:17:23.458 --> 00:17:27.824
Because UV will ruin any kind of plastic eventually.
00:17:27.824 --> 00:17:30.958
And this thin shell concrete thing, you know, that's gonna come.
00:17:30.958 --> 00:17:32.561
So that's the hexayurt part.
00:17:32.561 --> 00:17:35.765
Let me show you two other cool things.
00:17:35.765 --> 00:17:42.313
Cheap ID is a barcode and crypto-based solution for managing digital identites.
00:17:42.313 --> 00:17:44.263
You take a passport.
00:17:44.263 --> 00:17:47.328
You generate some digital signature that you have seen the passport.
00:17:47.328 --> 00:17:48.922
You put the digital signature on a piece of paper
00:17:48.922 --> 00:17:52.135
together with a jpeg of somebody's face
00:17:52.135 --> 00:17:54.202
And then you have an anonymous digital identity
00:17:54.202 --> 00:17:56.611
that's still $$17.57$$ [pa??] by nation-state credentials.
00:17:56.611 --> 00:17:57.582
What you would do with that, I don't know.
00:17:57.582 --> 00:18:01.144
But you’re smart people you'll find a use.
00:18:01.144 --> 00:18:03.443
Got be some use for it, right,
00:18:03.443 --> 00:18:06.694
like ID-cards for things where you want people to get in
00:18:06.694 --> 00:18:08.383
but you don't want necesarly to reveal anything
00:18:08.383 --> 00:18:10.788
other than the fact that somebody’s allowed there.
00:18:10.788 --> 00:18:17.131
And there's this thing which is the dartboard of death.
00:18:17.131 --> 00:18:19.638
ODeath.
00:18:19.638 --> 00:18:29.627
[audience: Yeah I perfectly understood that part,
00:18:29.627 --> 00:18:32.080
you can also call it the dartboard of doom]
00:18:32.080 --> 00:18:35.371
Dartboard of doom.
00:18:35.371 --> 00:18:38.184
(voices acting like Lord vader)
00:18:38.184 --> 00:18:39.671
Let me explain this before we get silly.
00:18:39.671 --> 00:18:44.775
There's only six ways people die:
00:18:44.775 --> 00:18:47.793
too hot, too cold, hunger, thirst, illness, injury.
00:18:47.793 --> 00:18:51.114
And the services that protect you from dying of these things
00:18:51.114 --> 00:18:54.155
are split through different levels of society.
00:18:54.155 --> 00:18:57.638
Individual person, household, village,
00:18:57.638 --> 00:19:03.536
community or city, region, country and world, right.
00:19:03.536 --> 00:19:06.694
So you have this notion of a stack of interlocking services
00:19:06.694 --> 00:19:08.482
that provides the essential services.
00:19:08.482 --> 00:19:11.129
This is a design tool that I've used when I was thinking about
00:19:11.129 --> 00:19:12.894
doing things for war refugees camps.
00:19:12.894 --> 00:19:14.635
So it's a way of figuring out that we have actually
00:19:14.635 --> 00:19:18.470
covered out all the essential needs within the concept of core technologies.
00:19:18.470 --> 00:19:22.368
So this is sitting out there, again, this is under the creative commons license.
00:19:22.368 --> 00:19:25.386
It models everything up to and including state failures.
00:19:25.386 --> 00:19:28.405
There is no software support for it yet, so we do it all with spreadsheets.
00:19:28.405 --> 00:19:31.725
Spreadsheets suck.
00:19:31.725 --> 00:19:34.535
So this is a really useful analysis tool,
00:19:34.535 --> 00:19:36.973
and its the kind of thing that we are tryin to begin to think
00:19:36.973 --> 00:19:39.295
to develop some kind of software to support.
00:19:39.295 --> 00:19:42.430
If anyone’s interested in this stuff, give me a shout.
00:19:42.430 --> 00:19:46.702
So, that was it.
00:19:46.702 --> 00:19:49.001
I'll turn off recorders and I'll take questions?
00:19:49.001 --> 00:19:51.486
[voice: Yes, sure]
00:19:51.486 --> 00:19:52.975
You want to see the folding videos?
00:19:52.975 --> 00:20:00.054
OK, hang a second.
00:20:00.054 --> 00:20:04.071
I don't think I have put this machine on the network.
00:20:04.071 --> 00:20:52.383
(silence)
00:20:52.383 --> 00:21:04.083
There's the crap animation GIF
00:21:04.099 --> 00:21:06.922
Have you seen this by the way?
00:21:06.922 --> 00:21:15.193
It's a 15 euro USB chargeable, awful awful horrible quality loud-speaker.
00:21:15.193 --> 00:21:18.051
But they are incredibly loud and they're dirt cheap.
00:21:18.051 --> 00:21:24.970
Now I can show you, let's see...
00:21:24.970 --> 00:21:28.081
So this is the German army dudes video.
00:21:28.081 --> 00:21:40.129
(silence)
00:21:40.129 --> 00:21:51.870
{21:50 or so} What? No! Go away!
00:21:51.870 --> 00:21:55.318
[video: Shall we try again (laughs).
00:21:55.318 --> 00:21:59.869
One of these days, we'll get just the right angle
00:21:59.869 --> 00:22:01.703
and we’ll understand how to make it work,
00:22:01.703 --> 00:22:06.208
and once we understand why, then it will be easy.
00:22:06.208 --> 00:22:11.305
Understanding counts, understanding counts.
00:22:11.305 --> 00:22:28.545
open-close, one-two-three]
00:22:28.545 --> 00:22:33.886
It’s called polyiso, polyiso.
00:22:33.886 --> 00:22:35.043
[So, what makes it so hard?]
00:22:35.043 --> 00:22:35.817
It's a cheap insulation board.
00:22:35.817 --> 00:22:41.734
[I don't know either, that's why I'm asking you.
00:22:41.734 --> 00:22:52.230
Ok, so let’s give that a try.
00:22:52.230 --> 00:22:58.081
Yes, oo, ok, you got it.
00:22:58.081 --> 00:23:01.053
Now, what did we do that made it easy that time?
00:23:01.053 --> 00:23:03.468
[mumble] oposite ends [?]]
00:23:03.468 --> 00:23:06.417
This is the red cross, one,
00:23:06.417 --> 00:23:09.459
The prototype we did for the Red Cross.
00:23:09.459 --> 00:23:15.264
Sorry it's an animated GIF, there's video but it's really slow.
00:23:15.264 --> 00:23:22.253
This is a smaller size that someone did at Burning Man.
00:23:22.253 --> 00:23:53.368
(silence)
00:23:53.368 --> 00:24:09.413
And that's -
00:24:09.413 --> 00:24:16.575
{24:10} [Roof herd - retreat! Not through the puddle.
00:24:16.575 --> 00:24:17.465
Your feet are gonna get wet.
00:24:17.465 --> 00:24:18.806
Go around, go around!
00:24:18.806 --> 00:24:21.170
Oh, what are we gonna do! Okey!]
00:24:21.170 --> 00:24:26.201
So this one we had material that was 3 meters by 1.8 meters.
00:24:26.201 --> 00:24:30.404
So we modified the design slightly and wound up with this huge structure.
00:24:30.404 --> 00:24:32.935
It's like 24 or 30 square meters in size.
00:24:32.935 --> 00:24:34.490
Just enormous.
00:24:34.490 --> 00:24:45.195
[wall ... 1, 2, 3, 4, 5 ... that will be the problem ...]
00:24:45.195 --> 00:24:51.910
There's the sixth side! [wall ... Okey?]
00:24:51.926 --> 00:24:56.967
[Does that look about right? Looks about right to me.
00:24:56.967 --> 00:24:59.429
Ok, so, roof folks!
00:24:59.429 --> 00:25:00.845
Now, here we're gonna have a bit of a problem
00:25:00.845 --> 00:25:04.723
because we don’t want the bottom of the roof to get wet, do we?
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?
00:25:10.133 --> 00:25:12.336
Does that sound remotely possible?]
00:25:12.351 --> 00:25:13.784
So this is another clever thing that we've learned.
00:25:13.784 --> 00:25:17.122
Which is what I call "gang carry".
00:25:17.122 --> 00:25:19.212
So, if everybody involved in the lift is carrying
00:25:19.212 --> 00:25:22.556
less than about 10 kilos, maybe 15,
00:25:22.556 --> 00:25:25.690
you get very very fine motor control of the lift,
00:25:25.690 --> 00:25:28.128
regardless of how heavy the object is.
00:25:28.128 --> 00:25:31.286
So you can actually take a hexayurt that's made of plywood, right?
00:25:31.286 --> 00:25:34.955
It's 12 sheets of plywood, 3/4 of an inch thick,
00:25:34.955 --> 00:25:38.717
and you can lift it with 4 people or 3 people on each side,
00:25:38.717 --> 00:25:41.457
so you got a gang of 18-25 people doing the lift,
00:25:41.457 --> 00:25:43.593
and you can just pick them up and walk with them
00:25:43.593 --> 00:25:44.777
because it's got so many people lifting it
00:25:44.777 --> 00:25:47.262
that each individual person is only taking a little weight.
00:25:47.262 --> 00:25:52.440
And that turns out to be a important technique light-weight construction.
00:25:52.440 --> 00:25:54.181
And it's very hard to get people to do
00:25:54.181 --> 00:25:57.223
because everybody expects lifting a heavy object to be hard work.
00:25:57.223 --> 00:26:01.890
And the idea of using so many people to lift it the heavy object becomes easy.
00:26:01.890 --> 00:26:11.550
People can’t get their heads around until they've done it.
00:26:11.550 --> 00:26:13.872
Everybody's looking confused: "shouldn’t this be heavier?
00:26:13.872 --> 00:26:18.678
What are we supposed to be doing here?"
00:26:18.678 --> 00:26:20.164
I and then you start moving
00:26:20.164 --> 00:26:31.774
and instinctively everybody tends to coordinate and it just sort of works.
00:26:31.774 --> 00:26:40.427
(mumble) See, we‘re on ice here. It's quite -
00:26:40.427 --> 00:26:41.892
[Now comes the tricky part.]
00:26:41.892 --> 00:26:45.474
So people have to feel off the front [?] run around,
00:26:45.474 --> 00:26:48.632
go inside, then take the [?] back again.
00:26:48.632 --> 00:26:51.372
It is very slow, very careful movement.
00:26:51.372 --> 00:26:52.812
But you can do it even in plywood,
00:26:52.812 --> 00:27:04.292
even if the material is really heavy, it still works.
00:27:04.292 --> 00:27:08.415
[Audience: I see. No door?]
00:27:08.415 --> 00:27:14.669
No, you don’t do windows and doors in hexayurts, so we say.
00:27:14.684 --> 00:27:17.127
So, it’s a kind of ritual,
00:27:17.127 --> 00:27:19.639
putting the roof on,
00:27:19.639 --> 00:27:20.597
taping the roof in place,
00:27:20.597 --> 00:27:22.292
and then cutting the door.
00:27:22.292 --> 00:27:25.645
We kind of do if for fun, but it’s a really nice moment.
00:27:25.645 --> 00:27:27.593
[audience: ???]
00:27:27.593 --> 00:27:37.765
If you've got a space station you can use transport ... fine.
00:27:37.765 --> 00:27:40.929
[I have a question.
00:27:40.929 --> 00:27:49.613
for the geodesics stuff ... material]
00:27:49.613 --> 00:27:53.323
I’ll tell you what:
00:27:53.323 --> 00:27:55.164
when I turn off the cameras and recorders
00:27:55.164 --> 00:27:57.182
you guys be comfortable and ask me questions,
00:27:57.182 --> 00:27:58.803
then we’ll take questions.
00:27:58.803 --> 00:28:02.377
So, thank you!