This is a 11 meter diameter dome which was built in Can Masdeu, in Barcelona.
It is a variant of a 6v, known as 3v2v, which has only 7 strut lengths, which makes it simpler to construct. The strut variance, 20.4% was comparable to the 2v3v. I settled on a 7/18 design, since we wanted it to be lower to the ground - the addition of 5 new lengths along the bottom ensured that the base was level.
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