¶ Spherical Barrel: Kumasi Dome (1)
← Spherical Barrel | Spherical Barrel: Kumasi Dome (2) →
Index Entry
Spherical Barrel: Kumasi Dome:
"In this particular experiment the triangular ‘corks,’ (i.e., octahedra) were small enough to render this /.005 aluminum/ foil of structural effectiveness. . . .
“What is unique about this Kumasi dome is that the octa corks had their triangular radial great-circle plane surfaces mathematically guided together only by two control holes in each of their abutting triangular great-circle plane faces . . . to tentatively guide the approach of these surfaces toward one another and thereafter to cohere the whole spherical system in a loose manner. . . . Wire bands described all 31 of the basic great circles of the icosahedron’s symmetrical subdivisions… Fifteen of these great circles lie alternately along the edge of the icosahedron and then act as vertical bisectors of the next two icosahedral major triangles. Of the 31, the remaining ten and six great circles interact with the 15 great circles in such a manner that they form approximately uniform tensional triangles overlying a six-frequency truncatable icosahedral pattern, with the wires crossing over all the vertexes as well as the mid-faces of the system to impinge vertically on the edges opposite each of the verticals.”
¶ Citations
- Ltr to Shoji Sadao, 15 Feb '66, p.2
