Gary,
I built a foam dome in the backyard. The dome plans are here ->
http://eoni.com/~garlitzj/geodome.htm
And I got pictures etc of my build on line here ->
http://starshed.net/
You can simply scale Joes plans to whatever size you want, I scaled down to under 2meters. Some render the foam with concrete, I used acrylic render on mine and others have built them out of plywood and then fiberglassed them.
I automated it using the
lesvedome ascom driver and some help from friends
