Four frequency domes

The main focus of the designs shown on this site is towards an ecological and economical way to build. I tried a few variation on edges and panels types as applied to different frequencies or dome types. On this page you see an example of a strut made out of 4X4 (could also be 2X4 or 2X3) as applied to a four frequency icosahedron with parallel tropics. A four frequency dome can be used to make an efficient capsule-house. As frequency goes up, edge length goes down for a given diameter. With an edge length of about 4 to 5 feet, this frame give up to 1000 square feet of floor area distributed on two floors. With such short edge lengths and compactness, this shape is a prime candidate for building an economical yet spacious house.

Here are a few example of how this f4 dome can be used. It can be cut into three slices or sub-assemblies namely, 3/8, 1/2 and 5/8, any of which can be mounted on a 20-sided cylindrical volume forming a ground level. This dome is called a "parallel tropic" variety which means that, just like the earth, it's two tropics and it's equator, where floors are installed, are parallel to each other.

Choosing the right frequency and partition is a basic step in dome design. It influences complexity of fabrication and usability. There is no gain in going to far with high frequency. Most "dome-house" are 3 frequency because it is so simple that way and their size can vary easily from 20 to 50 feet in diameter.Nonetheless, some higher frequency dome, when matched with the right pre-fabrication technique, can prove to be a good choise like this 5 frequency dome which give a well balanced mid-sized house of 32 feet of diameter.

An efficient warehouse can also be built as a four frequency dome using struts of about 8 feet long and plywood connectors. Here, 2 X 10 are used.

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All drawings, photographs, texts and technologies shown on this site are the exclusive property of Guy Massicotte.
Tous les dessins, photographies, textes, et technologies présentés sur ce site sont la propriété exclusive de Guy Massicotte.
© Guy Massicotte, jan. 1997