Index Entry
Gusset:
“If we draw a line diagonally from corner to corner on each of the six faces of a cube, we find that these six lines turn out to be the outlines of a tetrahedron. These hidden tetrahedra in ‘solid’ cubes make the cube stand up. Let us now reconsider the triangular gusset plates in the corners of the cubical buildings of steel, fighting the long lever beams attached to them. Quite clearly, if we made the triangular gusset plates a little larger they would be more effective in opposing the beam’s leverage against them. If we increase the size of the gusset triangles progressively they ultimately become the diagonals of the quadrangular openings of the buildings and correspond to the six edges of the tetrahedra hidden in the cubical or quadrangular building scheme”
