A spatial structure attempts to integrate the diagonals (oblique forms) frequently occurring in practice within a particular system, such as stairs, ramps, inclined roofs, oblique utility areas, constructive diagonals in grids.
If the empty spaces of lattices are to be used, this results in a conflict between constructive diagonals and space to be used, between statics and use. Spatial diagonals are excluded, flat diagonals are located in the vertical surfaces (walls) of an habitable structure with horizontal planes and vertical separations.
An architecture developed on a spatial grid according to my definition can be varied:
Even a "deconstructive" or amorphous structure is only usable if it has horizontal utility areas..