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Desc:'Big job, huh?'
Category:Science & Technology, Business
Tags:construction, 3d printing, Space Colonization
Submitted:Pillager
Date:03/14/16
Views:733
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Comment count is 19
Meerkat
This is pretty cool. A bunch of mobile construction platforms could be set up to build a small community in the desert, using mobile harvesters to collect sand and gravel and mix that into the cement on site. But then the fucking Harkonnens would show up on their stupid machine gun scooter buggies and you'd have to start building turrets and shit.
Caminante Nocturno
I spit at you for your reference.

chumbucket
At what point can we stop calling this "printing"?
Oscar Wildcat
Unfortunately, it uses special concrete cartridges that cost an arm and a leg apiece.
EvilHomer
Unlike conventional housing construction, which is practically free.

Oscar Wildcat
I estimate 500 USD per 50lb cartridge of concrete.

TeenerTot
How much more if I want color?

Oscar Wildcat
I think for printing the actual face of the concrete you'll need the separate paintjet printer. It too costs an arm and a leg compared to a knucklehead with a brush but think of it: you could have Scrotum H. Vainglorious' ascii penis art collection as your wallpaper!

EvilHomer
That is considerably more than an arm and a leg. That is more like an African White Rhino arm and a leg.

However, you'll wind up saving a lot by cutting out labor costs! ALL labor costs - including the cost of feeding, instructing, and monitoring the dysgenic biologicals who would otherwise have to be relied upon for building your concrete transhumanist pleasure palace.

memedumpster
You'll only be able to get these with a built-in space telescopes attached at 1150% the cost of both separately, and when a little sponge dries out in the casing it bricks itself, making you have to buy a new printer and space-telescope. Unless you want to collect dead printer husks and space telescopes.

sasazuka
Do they put some kind of frame between the gaps in the walls after it's "printed"? I don't know if I'd want to live in a building that's just concrete, with no frame or rebar.
Oscar Wildcat
All kidding aside, you could prolly drop rebar down into the slot and backfill with concrete. In fact, the whole "print" could be seen as a big mold, something you'd break off after the actual structural 'crete has been filled and set.

The real challenge would be doing the thing on site. A warehouse is an easy space to control, the great outdoors, not so much.

Mister Yuck
I'm not a engineer, but the way an engineer explained it to me, rebar wouldn't be necessary for something like this. Rebar provides strength against flexing and stretching forces which concrete is weak against. It's useful if you want to create things like beams or spans. These walls are going to mostly support their own weight and the weight of a roof, crushing forces that concrete is very strong against.

godot
Concrete curing is not a drying process, but a chemical reaction in solution. I'm guessing the only way one can print like this is by keeping internal humidity at 100%, which must be hell on the workers (in warmer climes) and machinery.

Binro the Heretic
Man learns a lesson from the humble mud dauber wasp.
Chancho
You would have to surface mount all of your plumbing, electrical, etc. Also what about insulation? How do you do rough in for inspection? Do inspectors just assume interior walls are ok? Interesting technology that would require codes to catch up to it.
SolRo
So, judging by that ending they added on, is their slogan going to be "Get your dream home built with hardly any dirty, lazy Mexicans touching it"?
gravelstudios
It's nice to see that the robots are going to be building the houses now, so all the construction workers can go home and kick their feet up a while. [I'm being ironic. they will lose their jobs]
godot
All that expense and resources, for such a plain looking house. If I settled in one place and could afford this, I'd tell the architect to let out his inner Frank Gehry.

Personally, I think the most interesting, cost-effective low-labor tornado-proof homes are the ones that wrap a rebar dome with plastic then spray shotcrete on the interior. The major problem living in these is the lack of flat surfaces, but there's no intrinsic reason one couldn't go polyhedral instead of hemispheric.
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