Class 2 Icosahedral Domes

These are in even numbered frequencies only, 2, 4, 6, 8, etc.

Hemisphere dividing lines are special adaptations to provide for a horizontal ground level perimeter.

Our Garden Dome 1 is the 2 frequency Class 2 icosa dome. In was the first dome we built using our innovative low cost connector system.



Next is the 4 frequency Class 2 dome. Class 2 domes have less quantity and less variety of strut lengths than the same frequency Class 1 dome. The result is an efficient simplicity and economy of materials.

Icosa 4 frequency dome comparison*
Qty.
Class 1
Class 2
Struts
250
205
Faces
160
130
Vertices
90
76
Strut types (lengths)
6
5

*Class 1 half (50%) sphere (GardenDome 4), compared to a Class 2 half (50%) sphere, as shown above.

More on the 4v Cl2 dome >>



6 frequency Class 2 icosahedral dome



More on the 6v Cl2 dome >>>



The 8 frequency Class 2 dome. The orientation is changed with the dome turned 90 degrees, now giving us a hexagon at the apex.This gives us a partial great circle hemisphere dividing point, shown in red. Applies to the 2, 4 and 6 frequency domes as well.



Disney's Epcot dome is a Class 2 icosa dome.

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