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