Closed Constructions
+ - - + Structures:

The rediscovery of a bar grid construction
system invented by Leonardo da Vinci

Index:
S-grids on cubes
R-grids on tetrahedra, octahedra and icosahedra
Grids on Archimedean solids
Grids on deltahedra
C-grids on polyhedra
D-grids on polyhedra