The 20 ft 2 x 4 dome is illustrated, with the geodesic triangled base option, modified to provide a level ground perimeter.
Cupola rises 20 inches above the top square.
Front profile view:
Height with Base Option as shown is 14 ft., 2-1/2 inches for the 20 ft diameter dome.
Cupola height can be adjusted to fit windows, fans, etc. or left off.
The dome frame with Cupola has 152 struts.
The dome with hexagon area in front. The hexagon top strut is straight above the bottom, making a good place to add a door.
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