Buckminster Fuller’s likeness reproduced with the courtesy of The Estate of R. Buckminster Fuller
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Icosidodecahedron is the name of a polyhedron with twenty triangular faces and twelve pentagonal faces. GEODOME 4 is designed based upon the space of this quasi-regular polyhedron. While this tent stands by itself with the poles arranged along to the side in an arc and the fabric, in strong wind, the tension network of wire functions as a wind resistant structure by distributing the wind power.
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This is the minimum ceiling height required by the building standards. The reason why we focus on the general housing ceiling height instead of outdoor “nest” is that we are inspired by Fuller’s ideal lifestyle, “house should be movable to any location.” While existing tents can ensure the same height as the radius of its footprint, we actualized the higher ceiling by rising up the under of the hemisphere.
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What Fuller called the Dymaxion and applied into various invention including the 4D tower was the concept of ”maximum gain of advantage from minimal energy input.” Geodome 4 is designed to be able to make a space with six poles which is a half as much as the existing dome tent that needs many poles to ensure the intensity. This makes the product lighter and easier to set up.
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Fuller called the structure, which remains integrity by the interaction of the net of continuous tension and the discontinuous compression, the “tensional integrity.” Adjusting the tension is impossible for an amateur, since adding excessive tension reduces its intensity. Geodome 4 overcomes this tensegrity problem by a practical implementation idea and upgrade wind resistant. Geodome 4’s wire reinforcing structure on the pentagon surface is a result of the research of the tensegrity theory from the practical viewpoint.
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“Geodesic” means the shortest path connecting two points on a sphere or a curved surface. Among the geodesic which goes around the sphere, a spherical polyhedron composed of the great circle* is geodesic polyhedron and the basic shape of geodesic dome replaces its arcs with strings (line segments) and put them on the ground. This structure has high strength which makes the maximum space with a minimal surface. After Fuller received a patent on the regular dodecahedron shaped dome structure which is composed of line segments, he founded the Geodesic Dome Company and produced a number of geodesic domes.
*Complete circle is the intersection of the sphere and a plane that passes through the center point of the sphere. -
In the book Operating Manual for Spaceship EARTH, published in 1963, Fuller compares the earth to a spaceship and proposed various solutions for the problems that human beings faced from the viewpoint of design and science. “There is plenty of resource and energy more than enough. It is just a matter of how to use. Using the technology which brings more gains from fewer inputs, we will recognize that deficiency just a facade. Change your mind. Push the limits of thinking.”
- ◯ The unique structure that improves Buckminster Fuller’s geodesic structure and tensegrity theory.
- ◯ 2.1 meters(= 6.9ft) ceiling height and comfortable living space. 4-person dome tent which realizes lightness and wind resistant.
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By the rising up the under of the hemisphere (which is a unique design for dome tent), 2.1 meters(= 6.9ft) ceiling height is realized even this tent is for 4 people (3 meters(=9.8ft) in diameter). This design ensures spacious habitability.
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1. Thread 5 poles through the sleeve. 2. Raise the tent in a dome shape. 3. Thread 6 poles through the sleeve along the equatorial line. Put a hook on a pole. Setting up the tent following the above steps, wires fixed to the tent in advance get tension and the center post rises vertically to the inner sheet. Consequently, the tent gets tension and entire wind resistant in strong wind.
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Reducing the number of poles to 6 and stretching around the tension structure, this tent gets endurance against even about 26m/s. Also, weight saving and structure rationality are realized by reducing the poles that support its own weight and making the network tension with replacement of the poles by the wire.
Geodome 4
NV21800
Price 180,000JPY + tax
[Capacity] 4 person [Average weight] 11.07kg (= 24.41lbs) [Floor Size] 230×218cm (= 90.5 × 85.8in) [Floor Area] 4.12m2 (= 44.3Ft²) [Height] 210cm (= 82.6 in) [Number of entrance] 1 [Number of pole] 6 [Stuffsack size] 73×26cm (= 28.7 × 10.2in) [Material] Canopy / 75D Ripstop polyester Floor / 150D Polyester Ox 10,000mm PU Coating Fly Sheet /75D Polyester taffeta1,500mm PU Coating [Country of origin] China [FEATURES] New geodesic dome tent which incorporates ceiling height over the hemisphere and unique wire structure. • The spherical dome which can be set up with 6 poles. • 6 points wire structure that strengthens the intensity • 2.1 meters(= 6.9ft) ceiling height for stress-free activity • Nonagon high water-resistant bathtub structured floor • 5 windows with mesh • 4 removable organizer which can use individually • 5 mesh pockets • 2 top ventilation window with quick open function • Hanging liner code with tensioner • Full-seemed fly sheet • Large duffel style stuff sack • DAC Stake • Guideline