Brutalism was designed to expose the functionality of the way everything was built. We'd been using Portland cement for a few decades at that point, but we alwa

Brutalism was designed to expose the functionality of the way everything was built. We'd been using Portland cement for a few decades at that point, but we always hid it behind facades meant to harken back to traditional architectural functions. Covering Portland cement in brickwork or arranged timber was a common way of doing that. By exposing the underlying core of the building Brutalism was meant to display that transparency would only be allowed so far as to show what a monolith the power structure who used it actually was. Brutalist architecture has few glass openings, vertically massive internal atriums, large thick columns, interior or exterior walls rising at harsh unnatural angles, and consecutive terracing without bracing, all unachievable with traditional building methods or in then-contemporary Mid-Century Modernist architecture. All of this was only possible due to the strong central structure, representative of the aforementioned "monolith" of power.