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Topic: Octet truss

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	Octet Truss (Site not responding. Last check: 2007-10-04)
		Given the uniform distribution of points in such a lattice, plus the equal distances between each point and its 12 nearest neighbors, Fuller called this the isotropic vector matrix (IVM) used it to think about situations with everywhere-the-same energy conditions (what "isotropic" means).
		The cctet truss is simply the IVM realized as an artifact for use in engineering applications.
		Pioneering work on the octet truss was done in the early 1900s by Alexander Graham Bell
	www.grunch.net /synergetics/octet.html (140 words)

	Andreini tessellation - Wikipedia, the free encyclopedia
		The tiling of octahedra and tetrahedra is of special importance since its vertices form a cubic close-packing of spheres.
		The space-filling trusses of packed octahedra and tetrahedra was apparently first discovered by Alexander Graham Bell and independently re-discovered by Buckminster Fuller (who called it the octet truss and patented it in the 1940s) [2] [3] [4] [5].
		Octet trusses are now one of the most common type of truss used in construction.
	en.wikipedia.org /wiki/Andreini_tessellation (139 words)

	United States Patent Office # 2,986,241 OCTET TRUSS -- SYNERGETIC BUILDING CONSTRUCTION
		A truss for building purposes in which the main structural elements comprise a plurality of identical struts interconnected in a pattern consisting of octahedrons and tetrahedrons, at least the ends of the struts being X-shape in cross section with the sides of the X lying substantially in planes of the octahedrons and tetrahedrons.
		A strut as defined by claim 7, in which the arms of the X are offset from the legs thereof by an amount which brings one surface of each into the plane of the center of the X with the arms disposed on the opposite side of center from the respective legs.
		A truss for building purposes in which the main structural elements are struts directly interconnected to one another without the use of hubs in a pattern which includes struts coming into an intersection on at least six intersecting axes, at least the ends of the struts being X-shape in cross section.
	www.ecosyn.us /Patents/patent2986241/octetruss_patent.html (3189 words)

	Wanted method to predict Octet Truss performance made from carbon-fibers
		OCTET trusses have been built periodically since = Buckminster Fuller patented them back in 1962 (patent # 2,986,241), so = there should be some performance data, testing data...
		Well a carbon fiber truss is not necessarily an "octet truss", which is very specifically "a truss made of entirely equilateral triangles composed of repeating iterations of OCtahedrons and TETrahedrons, and all struts are the exact same length".
		OCTET trusses have been built periodically since Buckminster Fuller patented them back in 1962 (patent # 2,986,241), so there should be some performance data, testing data...
	www.ee-one.com /new-4938597-4305.html (1152 words)

	THE KISSING POINT By Craig Martin
		Essentially, their reuse of the octet truss as the underlying structural frame in certain projects is employed out of pragmatic necessity, and as a challenge to the concept of innovation; the trinity.
		Aside from the aesthetic, the octet truss is one of the strongest structures known to man. This came out of Fuller’s research into the packing together of spheres.
		By enacting the octet truss, using the geometrical formula and adapting it, without conferring some right to its origin, N55 are engaged with the discovery of ends.
	www.n55.dk /MANUALS/DISCUSSIONS/OTHER_TEXTS/CM_TEXT.html (2437 words)

	Space frame - Wikipedia, the free encyclopedia
		A stronger purer form is composed of interlocking tetrahedral pyramids in which all the struts have unit length.
		More technically this is referred to as an isotropic vector matrix or in a single unit width an octet truss.
		Larger portable stages and lighting gantries are also frequently built from space frames and octet trusses.
	en.wikipedia.org /wiki/Space_frame (343 words)

	Mailgate: bit.listserv.geodesic: Octet truss dome? (Site not responding. Last check: 2007-10-04)
		An octet truss structure is all triangles: http://reality.sculptors.com/~salsbury/Gifs/Graphics/octet-truss-003-v2.png By contrast, Fuller's '67 dome had a layer of hexagons in it.
		The idea of building a dome based on the octet truss is explored in: Planning a Bigger Dome, Part I http://tekstaronline.com/monkeyhouse/geodesics/supporting/...and...
		Planning a Bigger Dome, Part II http://tekstaronline.com/monkeyhouse/geodesics/supporting2/ However - my impression is that using the octet truss would be a bad idea - one with practically no redeeming features - when compared to the designs that have actually been employed in building big domes.
	mailgate.supereva.it /bit/bit.listserv.geodesic/msg00494.html (297 words)

	octet truss cardboardcar (Site not responding. Last check: 2007-10-04)
		octet truss cardboardcar Before day next morning the children in the big houses were making apartment laundry smart cards the walls ring with laughter and shouts of joy.
		Then it was octet truss cardboardcar regretted, seeing that it floated over her shoulders like tresses of mathematicl facts in card games silk, and was so luxuriant that a Delhian maid might have envied it.
		octet truss cardboardcar She also cursed the hour she took him for her husband, saying his yu_gi_oh cards tu boy stacked with furniture and straw, but, as far as she could make octet truss cardboardcar out, nothing had been broken or scratched.
	freehost12.websamba.com /lotsofinfo/octet_truss_cardboardcar (479 words)

	Polymorf - Knowhere - Towers and space trusses (Site not responding. Last check: 2007-10-04)
		truss geometry was a twenty-five meter tall observation tower built in Nova Scotia by Dr.
		The legs are sliced from the octet truss parallel to
		crystal lattice structure (a variation of the octet truss).
	www.polymorf.net /engineer79.htm (186 words)

	Patent 4711062: Octet structures using tension and compression
		Special plates for coupling between the ends of the compression members, and the tension members include slots for receiving the tension members and a central opening for securing the compression member to the plate and for locking the tension members to the plates, with the plates forming parallel planes above and below the octahedral structures.
		9 and 10 indicate the mode of extension of the octahedral/tetrahedral, or "octet" structure to a large planar array which may be extended substantially indefinitely.
		In one exemplary relatively small truss configuration, the tension members might be approximately 18 inches in length with the compression members being approximately 26 inches in length when the module is erected.
	www.freepatentsonline.com /4711062.html (3698 words)

	A Fuller Explanation: Chapter Nine isotropic vector matrix
		Our familiarity with the IVM enables us to visualize and appreciate Fuller's "Octet Truss." Awarded U.S. Patent 2,986,241 in 1961, this structural framework is so widespread in modern architecture that one might assume buildings have always been constructed that way.
		He had built his first Octet Truss—also the first example of what was to become a lifetime habit of approaching structural tasks in revolutionary ways.
		Carbon atoms in the structure of diamond take advantage of the strength of tetrahedra; their organization can be thought of as a double octet truss, two intersecting matrices with the vertices of one overlapping the cells of the other.
	www.angelfire.com /mt/marksomers/103.html (867 words)

	Octet truss - Wikipedia, the free encyclopedia
		Look for Octet truss in Wiktionary, our sister dictionary project.
		Look for Octet truss in the Commons, our repository for free images, music, sound, and video.
		If you have created this page in the past few minutes and it has not yet appeared, it may not be visible due to a delay in updating the database.
	www.wikipedia.org /wiki/Octet_truss (103 words)

	Synergetica
		Thanks in large part to Fuller's pioneering efforts, the isomatrix is now at least as prevalent as the geodesic dome in architecture and is known to civil engineers as the "octet truss." The octet truss was used to construct Biosphere 2 for example.
		The octet truss is also very evident in the pavilion architecture at Epcot's Tommorowland where corporate purveyors of a high tech image are probably unaware to what extent Fuller's vision of the future has permeated their own.
		A central dichotomy implied by these two architectural structures, the octet truss and the geodesic sphere (or buckyball), has to do with the symmetry groups to which each belongs.
	www.4dsolutions.net /synergetica/synergetica1.html (1049 words)

	Beyond Flatland
		The octet truss defines tetrahedral and octahedral voids, twice as many of the former, with a volume ratio of 1:4 respectively.
		An octet truss is a skeletal spaceframe with all edges perpendicular to rhombic facets.
		Given the streamlining effects of merging fcc packing with the octet truss and a concentric hierarchy of easy-to-remember volumes, the essentials of this curriculum are likely to gravitate down to lower grade levels, such that all of the above will be in some form accessible to an average 14 year old.
	www.4dsolutions.net /ocn/urner.html (1564 words)

	RMT Expert Summary
		The octet truss has been used in the construction of spaceframes throughout the world.
		It is an aggregation of triangular truss elements that distributes stresses throughout the spaceframe.
		Consequently, truss analysis may not be adequate to characterize the stress state in the porous architecture of RMT structures.
	unistates.com /rmt/rmtexsum.html (6951 words)

	Octet Truss: Tetrahedrons and Octohedrons in Diamond Lattice
		The OCTET TRUSS invented by R. Buckminster Fuller is the strongest theoretical structure.
		For PALACES FOR THE PEOPLE it is envisioned that the octet truss can provide the floor and roof slab supports, spanning greater areas with overall less weight than with steel I-beams.
		This reduces not only the weight which must be supported, but also reduces the costs of materials by reducing the actual materials.
	www.ecosyn.us /ecocity/Palaces/Octet/Octet_Truss_01.html (169 words)

	3D Molecular Fractals (Site not responding. Last check: 2007-10-04)
		The molecular architecture of non living matter seems to follows the architecture of the closer packed planar octet type of arrangement.
		The Mean proportional Geodesic consist of 12 molecules surrounding a mother molecule of a proportional larger size of Tau.
		The following graphic is of a 3D Fractal octet truss arrangement with a golden section packing inset which has a u(n+1)=u(n) +1 unidirectional size progression if the outer chord of the octahedron is considered as 1.
	ourworld.compuserve.com /homepages/robert_conroy/3dmolecu.htm (408 words)

	Externally Octet-Trussed Geodesic Patches (Site not responding. Last check: 2007-10-04)
		One of the reasons I wrote the software to bend the octet truss for use in geodesic patches (see Planning a Bigger Dome, Part II) was to support a large geodesic, keeping it from dimpling when radial pressure was applied.
		I placed the truss inside the dome, since it made sense that supporting structures should be underneath the thing they support, and aesthetically, I wanted to preserve the geodesic look on the outside.
		And since the trussed geodesic patches could be prefabricated (each patch could be built whole, or as sections of tesselations) they could be shipped to a remote site and then assembled into possibly very large structures.
	tekstaronline.com /monkeyhouse/geodesics/outside (649 words)

	Steel Domes (Site not responding. Last check: 2007-10-04)
		Example 1: Class II 4v with Diamond Truss cross bracing shown with dashed lines produces an interior Class I 2v (Garden Dome 2) dome with common vertices (top view).
		Note: this is not the same concept as the Garden Dome 2- X3 for example because the two connected domes shown above are separate with common vertices.
		A closer knit spherical octahedron- tetrahedron (octet) pyramid truss multiplies elements and synergistic strength, ideal for larger domes.
	www.gardendome.com /steel_domes.html (579 words)

	Geodesics at the Monkey House
		I develop the warped octet truss - a thing of beauty and elegance that allows much larger geodesic structures to be built.
		The truss is applied under the geodesic surface to strengthen and support it.
		Since the warped octet truss bracing is equally effective externally as internally, a sign is reversed and external bracing is produced.
	tekstaronline.com /monkeyhouse/geodesics (794 words)

	400.00 SYSTEM
		In the octet truss system, all the vectors are of identical length and all the angles around any convergence are the same.
		The octet truss complex is a precessionally nonredundant, isotropic vector- tensor evolutionary relationship whose energy transformation accountings are comprehensively rational
		Spherics: Employing the rhombic dodecahedron as the hub at the vector crossings of the octet truss (the isotropic vector matrix) provides unique economic, technical, and geometric advantages: its 12 facets represent the six pairs of planes perpendicular to the six degrees of freedom.
	gd.tuwien.ac.at /books/synergetics/s04/p2300.html (1555 words)

	Under what other names does "Octet Truss" go by?
		For this reason the truss has an enormous load-carrying ability; and its strength to weight ratio increases as the truss grows in size, In 1953, at the University of Michigan, Fuller load tested an Octet Truss made of 170 slim 33" aluminum struts, each weighing one-third of a pound.
		I am eager to find other test information about the octet truss, but must apparantly either look under some other name, or else get tests made.
		I would also be interested in information in recruiting engineering departments to undertake such composite carbon octet truss testing.
	www.ee-one.com /new-4938968-4305.html (858 words)

	Scrapbook - CCP and Octet Truss
		The programs to generate domes having their vertices joined with struts forming the octet truss was written at Steve's request.
		This root 60 cluster is filled with octet truss as thick struts
		This view of a root 500 cluster has spheres highlighted if the square of their distance from the centre is a prime number (requested by Steve).
	www.freewebtown.com /adrian/geom/905_waterman/imagelist.html (224 words)

	Mailgate: bit.listserv.geodesic: Re: [GEODESIC] Octet truss dome? (Site not responding. Last check: 2007-10-04)
		If you are talking about improving the octet strut pattern to make it even more extreme than it already is - IMO, a prominent candidate is the rhombic dodecahedron, converted into twelve "shrunken" tets.
		Maybe the mismatch between the octet truss and in icosahedral dome had something to do with it.
		An octet truss makes an octohedral dome very nicely - but the maths involved in making a high-frequency icosahedral dome out of octet trusses is tricky - and you tend to wind up with a structure covered in irregular seams.
	mailgate.supereva.it /bit/bit.listserv.geodesic/msg00498.html (589 words)

	Buckminster Fuller - Wikipedia, the free encyclopedia
		He developed this in several ways, from the close-packing of spheres and the number of compressive or tensile members required to stabilize an object in space.
		Some deep confirming results were that the strongest possible homogenous truss is cyclically tetrahedral, and all solids constructed of regular polygons, except the icosahedron, have a volume that is an integral number of unit-tetrahedrons.
		Fuller was born on July 12, 1895 in Milton, Massachusetts, the son of Richard Buckminster Fuller and Caroline Wolcott Andrews.
	en.wikipedia.org /wiki/Buckminster_Fuller (2771 words)

	[No title]
		Remove the spheres and leave the vectors, and you have the octahedron- tetrahedron complex, the octet truss, the isotropic vector matrix.'' 22..55..
		A truss is an engineering mechanism for dispersing loads across a relatively long span, to enable coverage of large, primarily horizontal areas with a minimum of underpinning supports (posts).
		Most trusses appear to be arranged to act independently of one another, whereas the members of an Octetruss are all part of the whole unit.
	www.cjfearnley.com /fuller-faq.txt (16253 words)

	[No title] (Site not responding. Last check: 2007-10-04)
		Maybe you could make truss plates this way.
		I'd like to find some inexpensive connectors to make one of these things with 25 12' 2x4s, and cover it with 12' wide greenhouse film.
		I doubt that these space frames would >be practical for commercial house-building, but for a >DIY type the advantages are many: no big pieces of wood >to handle...
	www.ece.vill.edu /user/nick/usenet/00000378 (511 words)

	Ford Rotunda Dome (Site not responding. Last check: 2007-10-04)
		The dome incorporated octet trusses, whose 5oz component struts were machine-made to very high tolerances (0.005 inches, instead of the traditional eighth of an inch).
		The 19 680 yard-long struts were colour-coded for ease of assembly into triangles.
		These were connected to form larger triangular units, in turn assembled as 12ft octet truss complexes each weighing only 4lb.
	www.nous.org.uk /Rotunda.html (202 words)

	WebThread "formZ Forum" thread reader
		You'll need to be more specific, as there are many ways to skin a cat, model a truss etc. Posting a sketch would be helpful-if you want serious input.
		The trick will be to do sweeps for the truss members.
		You can use the Attach tool to place tetrahedron frame primitives on along the curving path and move frame points to control directions.
	www.formz.com /forum/forum_archive/forumG/003.html (176 words)

	Re: Wanted method to predict Octet Truss performance made from carbon-fi
		Re: Wanted method to predict Octet Truss performance made from carbon-fibers
		Wanted method to predict Octet Truss performance made from carbon-fibers, Palaces For The People
		Re: Wanted method to predict Octet Truss performance made from carbon-fibers, George Elkins
	www.usenet.com /newsgroups/sci.engr.manufacturing/msg00043.html (447 words)

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