¶ Spherical Barrel: Kumasi Dome (2)
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RBF Definitions
(2)
"Thus it is found that 31 great circles act as the most effective ‘spherical barrel’ bands (where a 6 - 12 frequency, truncatable, icosahedronal pattern is employed) for each of the wires runs over the external surface centers of each of the octa-cork’s triangular faces, thrusting each ‘cork’ inwardly toward the center of the system in such a manner that the tightening of the bands brings about a universal contraction of the sphere.
"As the tensional great circle bands were contracted progressively at Kumasi, it was found most practical to first tighten the set of six great circles. This left the sphere with a set of 12 dodecahedral ‘mountain’ bulges. We next contracted the 15 great circles. This brought the sphere into greater symmetry which was totally effective when the 10 great circles were also tautened.
“'Where the great circle wire bindings crossed, they had to be tied together but not tightly, i.e., they were run through rings. They didn’t need to be tied tightly together, merely guided.”
¶ Citations
- Ltr. to Shoji Sadao, 15 Feb '66, p. 3
