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| hardened_bubbles [2008-01-22 18:33] – 62.166.51.71 | hardened_bubbles [2008-01-22 18:33] – 62.166.51.71 | ||
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| ==== Hardened Bubbles ==== | ==== Hardened Bubbles ==== | ||
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| anchored to a circular ring beam, from ground level into an hemispherical dome. After the initial ground preparation was finished, | anchored to a circular ring beam, from ground level into an hemispherical dome. After the initial ground preparation was finished, | ||
| that concrete thin shell structure was built in 60 minutes. http:// | that concrete thin shell structure was built in 60 minutes. http:// | ||
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cocky