Octa Dome 4 Class II

A 21 ft dome is illustrated, made with 2 x 4 construction.
Height is 13 ft - 6 in or ~ 65% of diameter.

A door fits in a lower square area. Door dimensions are 75" x 40" for reference.
Strut lengths range ~ 65" to 75" for the 21 ft dome.

Having forgotten this page, I made another one you might like to see. It shows some new illustrations and options including the -X1 Subdivision of this Octa-Dome 4
Part 2

Octa Dome Types