OK, so here is a pentagon(ish) idea, with one axis of symmetry.
It's a bit less "wacky" than my original vision, but it's occurred to me that nothing is preventing me from constructing an outer skin that doesn't follow the exact same dimensions/angles of the inner walls ... in fact, it would be...
Oh yeah, like a parabolic dish. I remember a pair of those at a science museum that faced each other, and you could whisper at one and the person 50 feet away at other could hear you with no problem. :rolleyes:
That being the case, what do you think of pentagon vs heptagon? And in both instances all the inner angles and wall lengths would be different. Here's a seven-sided one I've been playing with.
:thumbs up: That's the plan.
I've got an area roughly 22 ft in diameter to work with, and about 23rds of it will be dug into a hillside and ultimately covered up with a living roof. Think "Hobbit House" without the round door. Probably around 3500 cf of volume (depending on the height/angle...