3 ms·

Slight correction, I believe the inflated forms are left in place as an additional outer vapor barrier after rebar reinforced concrete is sprayed from the insid

• jacquesm 5y ago
  That's clever, this sounds like an improvement on the way they were making these in the 70's. Or maybe they coat the inflated forms with the plastic that will become the vapor barrier later? Anyway, there are so many variations on this theme I'm pretty sure that you'll be able to find examples of all of those in practice. What I find a bit annoying about dome construction in general is that people are always incredibly busy showing what things look like as they go up, but not so much when they are in actual use, what kind of maintenance they end up with and how they look after 5, 10, 15 and 30 years. Because the interesting part of a building is how well it holds up over the longer term.