12 ft. Radius ⅝ DOME - 5 vertice
I had a great deal of help doing the math on this one. The Desert Dome website is very helpful along with thier Dome Calulator.
Below are the documents I created to make sure all my struts were the correct length. I confess I redid each of these documents at least five times over due to my own brain damage surrounding calculations of this sort.
VERTICE INFO/Assembly Diagram
More Geodesic Dome links:
Burning Man Dome