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Space frame
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==Overview== [[Image:SpaceFrame02.png|right|thumb|250px|Simplified space frame roof with the half-octahedron highlighted in blue]] The simplest form of space frame is a horizontal slab of interlocking [[square pyramid]]s and [[tetrahedron|tetrahedra]] built from [[Aluminium]] or tubular [[steel]] struts. In many ways this looks like the horizontal jib of a tower crane repeated many times to make it wider. A stronger form is composed of interlocking [[Tetrahedron|tetrahedra]] 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. More complex variations change the lengths of the struts to curve the overall structure or may incorporate other geometrical shapes.
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