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Geodesic Tire Domes

 
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Tiny houses, good a place as any to ask about this.
I have seen small playground domes made of tires.
Could one build such a dome at a large enough scale as to be useful?
Assuming a rough diameter of 2', an 18' diameter dome would take about 28 tires for just the first"course ".
That means a lot of tires to gather, and a lot to get rid of if it doesn't work out.
A 7' diameter dome would need about 11 tires for the first course,and would be big enough for a play house.
I could see filling the cavities with paper,cardboard,papercrete,soda bottles, etc.
Vinly tarp on top,followed by used carpet.
Add soil and plants,or finish it with acrylic cement.
Door? I'm not sure how that should work.
Windows are obvious.
Less obvious, the option of building strait walls,cylinders rather than domes.
Or a cylinder topped with a dome.
I would like to see this as the frame work for a green roof, with each tire being a planter.
Maybe you could harvest root crops from inside!
I can't see that form of the dome as being compatible with living space, but you could have a nice "root cellar", perhaps filled with water barrels for thermal mass.
Another way to go is to warm the inside of the dome,and thus the roots of the plants above.
That should push the zones a bit.

So,let me know what you think,feasible,useful,foolish?
 
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The reason tires support an earthship house is they are filled with earth packed as tightly as possible. The earth supports the wall. The tires hold it in place. Filling them with lose material wouldn't support a dome roof very well. The tire dome sounds like fun though.
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