In his buildings, Loos normally starts with one main volume in which the space, configuration, and elements follows the rules and composition of classical architecture.
He organizes the interior of that volume with smaller cubes, rectangles boxes, and cylinders arranged in a volumetric puzzle of sorts.
In general, Loos lets his fenestration be subdivided into squares and rectangles that all obey a modular system, which correspond perfectly with the geometry of the façade.
Loos built his buildings with roughcast walls and used the stucco to form a protective skin over the bricks.
Instead it was meant to demonstrate certainty of form and economy of space, proving that traditions can be manipulated or rid of completely, for a functional and non-aesthetic purpose.