Page "Brutalist architecture" Paragraph 4

Brutalist buildings usually are formed with striking repetitive angular geometries, and, where concrete is used, often revealing the texture of the wooden forms used for the in-situ casting.

Although concrete is the material most widely associated with Brutalist architecture, not all Brutalist buildings are formed from concrete.

Instead, a building may achieve its Brutalist quality through a rough, blocky appearance, and the expression of its structural materials, forms, and ( in some cases ) services on its exterior.

For example, many of Alison and Peter Smithson's private houses are built from brick.

Brutalist building materials also include brick, glass, steel, rough-hewn stone, and gabions.

Conversely, not all buildings exhibiting an exposed concrete exterior can be considered Brutalist, and may belong to one of a range of architectural styles including Constructivism, International Style, Expressionism, Postmodernism, and Deconstructivism.