The 3, 4, and
5 frequency Kruschke Icosahedral domes
Dome geometry modifications provide
coplanar vertices at convenient cut off points located at ground
The dome base is level with the ground/foundation. In most cases there
are fewer varieties of strut (edge) types (lengths), but triangles are
more visibly different, compared to conventional geometry (Class 1
Method 1 in Hugh Kenner's Geodesic
Math) that gives more uniform triangle dimensions. The 3, 4, and
5 frequency icosahedral domes are presented here.
3 frequency dome
3 frequency Edge Zenith dome (rotated 31.7°)
A family building a 20ft. GD3 EZ
4 frequency dome
4 frequency dome rotated 31.7° makes a Hexagon Zenith.
Half-triangles on the lower level make the flat base.