Thanks, somehow I missed that.

> The question of water is not so much how do we protect the building from water but rather how do we harvest the resource of water from the building!

"Harvesting" water from the building is certainly an interesting idea!

> as condensation from warm interiors onto cold surfaces will likely be an issue

That's a good point.

What's your opinion on the feasibility of this building technique for urban areas (in say, Western Europe)? I can imagine it to be hard to get a permit for building such a dome, as it doesn't blend in with the surrounding structures. Other than that, the low cost make it very attractive.