When of great size it became necessary to support its ceiling with columns; thus, according to Vitruvius, the tetrastyle oecus had four columns; in the Corinthian oecus there was a row of columns on each side, virtually therefore dividing the room into nave and aisles, the former being covered over with a semicircular ceiling. The Egyptian oecus had a similar plan, but the aisles were of less height, so that clerestory windows were introduced to light the room, which, as Vitruvius states, presents more the appearance of a basilica than of a triclinium.
Roman Holiday: Theodosius and His Spanish Villa; Danny Wood Visits Carranque Archaeological Park, near Madrid. Recently Opened to the Public
Feb 01, 2004; THE HOLIDAY PLAYGROUND for the family of Theodosius the Great, Roman emperor An 379-95, lies just twenty miles outside Madrid. In...