Brilliant! And smooth abd clean. Saw it on Boing.
I helped build a dome in the late 60's. I think it ended up like your total utter failure - but I was gone by then.
I like the idea of using such a thing as a (flat) roof-top shelter on a garage or something (me downtowner).
And I'm highly amused that all the commentary I had the stamina to scan was about housing prices and nothing about structure.
cheers, Good Luck, Tedsy