A earth-sheltered affordable greenhouse dome. Build it yourself kits.
The key is you build it from the top down.The intergral frame/foundation design when buried becomes one with the earth.The 6 mill film has been exposed to below zero temp. and max of 70 mph wind. In the 10 months of loading on the matrix design has distributed the load better than I expected. The second generation 5/8 sphere, earth sheltered design is under way.I call it the "Live Where You Grow Dome" If your at all thinking of a kit home especially a dome contact me at futurespaces@msn.com. Start out with 6mill film and upgrade to polycarbonate or glass later. In cold climates strawbales can be used. I've monitered temp and Humidity and there is a measurable impact of the constant 56 F. temp resulting from the earth berm and vapour mitigation. The cupola has had a dramatic affect on the air change rate, by tapping into the convective loops that naturally form in domes. In wet conditions I use a annode to slow down the oxidation,or rust. The intergal frame/foundation has resulted in a hurricane proof design. With it buried you would have to shear the bolts for the frame to fail. If earthquakes are a concern you can use re-cycled tires as a buffer as you backfill. The sphere would perform better than 5/8, but would cost more. With a continious vapour barrier you can mitigate radon or anything thats off gassing thats in the soil. For cold year round growing I'm using the envelope design with a small fan to pressurize the air space. I use a IR/AC film infrared/anti ...
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