construction by wood | |
| geometry The struts will be replaced by 1-inch EMT with an outer diameter of 1.16 inches so that the structure can be buried four feet deep To maintain the geometry for a 85 inch diameter dome add 7 inches to the hole to hole lengths for total cut lengths. the shorter of the two base ring struts, 5 painted pieces, B's 34.30 inches | 41.30 inches the longer ones, 10 unpainted pieces, C's 35.05 inches | 42.05 inches | |
| the base ring connect those 15 struts in a circle with wire using this pattern: B-C-C B-C-C B-C-C B-C-C B-C-C 15 base struts: 10 C and 5 B disassembly into 5 pieces, three struts each, joined by wire | |
| the first level to assemble: form the V triangles: At every point where two Cs meet on the foundation ring, connect two additional Cs to form an upward-pointing V triangle form the B triangles: Above every B on the foundation ring, construct a triangle with two Cs connect the top of the Vs to the base with 10 Bs add the horizontal belt: Connect the tops of these triangles horizontally with 10Cs and 5Bs The Bs go on top of the V triangles. 45 Level One pieces: 30 C and 15 B disassemble into 5 sections each with 3 horizontals and 6 verticals. 2 C and 1 B horizontal and 4 C and 2 B verticals | |
| the second level five star/pentagons and five triangles each star/pentagon has five As for the stars and four Bs for the pentagons Strut A 29.63 inches each triangle has one B and two Cs for a 3/8 dome, the second level is the first level | |
| relevel the stabilization ring linking the 4x4 segments together using steel structural strapping or corner brackets on the inside edges. | |
| build the thrid level Form upper triangles: Construct an upward-pointing ring of triangles using alternating sets of Struts B and Struts C. Cap the third level: Tie the top of this tier together horizontally using a ring of 10 Struts C. | |
| assemble the roof crown On the ground, build your final roof pentagon out of Struts 45 Level 3 pieces: 30C, 10B and 5A | |