geodesic dome


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geodesic dome

(jē'ədĕs`ĭk, –dē`sĭk), structure that roughly approximates a hemisphere. Popular in recent years as economical, easily erected buildings, geodesic domes are geometrically determined from a model and may be constructed from limited materials. The architect Buckminster FullerFuller, R. Buckminster
(Richard Buckminster Fuller), 1895–1983, American architect and engineer, b. Milton, Mass. Fuller devoted his life to the invention of revolutionary technological designs aimed at solving problems of modern living.
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 was an early proponent of geodesics for housing and other functions. Among the best-known examples of geodesic domes have been the United States Pavilion at Montreal's Expo 67 and Biosphere II, an experimental recreation of the ecosystem in Arizona.

geodesic dome

Consisting of a multiplicity of similar straight linear elements, arranged in triangles or pentagons; the members in tension have a minimal cross section and make up a spherical surface usually in the shape of a dome.
See also: Dome

geodesic dome

[¦jē·ə¦des·ik ′dōm]
(architecture)
A dome constructed of many light, straight structural elements in tension, arranged in a framework of triangles to reduce stress and weight.

Geodesic dome

A curved lattice grid dome that utilizes the equilateral triangle as the basis of its surface grid geometry. R. Buckminster Fuller, the inventor and champion of the geodesic dome, obtained a patent in 1954 that described a method of dividing a spherical surface into equilateral triangles. The two regular polyhedra that can be inscribed in a sphere are the dodecahedron (12 faces, each of which is a regular polygon; illus. a) and the more utilized icosahedron (20 faces, each of which is an equilateral triangle; illus. b).

The geodesic dome has been used for everything from great exhibition spaces and halls to outdoor tent supports and jungle gyms. By utilizing the icosahedron as the basic building block of the geodesic dome, larger domes are possible with additional triangular subdivisions. This subdivision is known as the frequency. The first frequency is to interconnect the projected midpoints of the struts of each equilateral triangle of the icosahedron as they will project on the spherical surface. The result is four almost equilateral triangles where there was one before. The resulting lattice has similar but not exactly equilateral triangles if the grid is to remain on the spherical surface. This subdivision process can continue. The resulting grids have both triangular and hexagonal grids as a by-product within the basic geodesic dome geometry, with pentagons around the apex of the basic underlying icosahedron framework (illus. c).

geodesic dome

A structure consisting of a multiplicity of similar, light, straight-line elements (usually in tension) which form a grid in the shape of a dome.
References in periodicals archive ?
9 each of environmental illumination radiance is located at a centroid of each polygon of a geodesic dome. Illumination distribution of the scene is represented with a set of point sources equally distributed on the geodesic dome.
WELCOME: The Duke of Gloucester at Acklam Grange school, with headteacher Andrea Crawshaw, left, and in the Geodesic Dome, below Pictures by IAN McINTYRE DUTIES: The Duke at the Higher Education and Conference Centre in Redcar, above, and unveiling a plaque at Roseberry Park, right Picture, left, by KATIE LUNN PLEASED TO MEET YOU: Youngsters at Priory Woods get out the bunting, left, while pupils at the school meet the Duke before he leaves, below
In the early 1970s, Hansen built a multimillion-dollar company by commercializing the geodesic dome. But with the Arab oil embargo of 1974, a key material used to construct the domes, polyvinyl chloride (PVC) suddenly became scarce.
Programs this season have included a recreation of Cabaret Voltaire, with a Dada-inspired art exhibit created by Harvard students; an audience-generated collage about memory; a Buckminster Fuller-inspired science fair; and a geodesic dome sculpture display.
He was the inventor, and main advocate, of the "geodesic dome" -- an architectural form that, he believed, could combine structural integrity with lightweight building materials.
The museum's design, by architectural firm HOK, features a large glass entryway, skylight; and geodesic dome reminiscent of the Dali museum in Figueres, Spain.
An architectural masterpiece atop the Al Faisaliah Tower and created by legendary architect Sir Norman Foster, the geodesic dome of The Globe is truly an iconic landmark on Riyadh's skyline.
Lopi LaRoe designed a geodesic dome in which Haitian orphans could be safe from endless tons of rain and mud.
IN March 1974, The Evening Chronicle reported on one woman's geodesic dome greenhouse.
The book's 9 classroom-tested projects, including building a geodesic dome, come with student handouts, solutions, and notes for the instructor.
For example, Walther Bauersfeld, developer of the Zeiss projection planetarium, patented a geodesic dome for it three decades before Fuller received his own dome patent in 1954.
Since triangles are the most rigid shape known, the geodesic dome is extremely strong, although light weight.