Circulation

Circulation is the pattern of movement that describes how people, goods and sometimes vehicles get from one place to another in a building. Corridors, halls, lobbies and galleries make up horizontal circulation; stairs, ramps and lifts form vertical circulation. Good circulation lets people use a building without thinking about it and without getting lost.

Principles of good circulation

Circulation space is not usable floor area in itself, so corridors that are longer than they need to be push up both cost and gross area. On the other hand, a plan squeezed too tightly becomes awkward to use. The designer reads the required adjacencies from the brief and organises movement around them. In hospitals, patient, visitor and service flows are kept apart; in homes, the transition between living and sleeping zones is considered. Escape routes, door swing directions and corridor widths are governed by fire regulations. Accessibility belongs here too: level thresholds, enough turning space and easy access to lifts are planned from the outset.

Circulation and the experience of space

Circulation is more than a route; it shapes how a building is discovered. Looking down from a gallery or watching a view open up as you climb a stair are both products of how movement has been designed. In architectural animations, the camera path very often follows exactly that circulation route.