Ribbed Vaulting
Ribbed vaulting — origins, Islamic development, Europe, and India Before Islam — the architectural background Romans, Byzantines and Sasanians already possessed sophisticated traditions of arches, barrel vaults, groin vaults and domes . These provided part of the architectural inheritance from which both Islamic and later European builders developed. However, ordinary Roman groin vaulting should not simply be called medieval ribbed vaulting : the intersecting groins were not necessarily constructed as distinct projecting ribs. Major Islamic innovation — crossed-rib vaulting 961–976 — Great Mosque of Córdoba, Umayyad al-Andalus During the enlargement of the mosque under Caliph al-Hakam II , builders created extraordinary domes in which independent arches/ribs cross one another , producing polygons and star-like geometrical compartments. Fuentes and Huerta identify Córdoba's crossed-arch domes as the earliest known vaults of this particular ribbed type . ( UPM Open Access ) This repr...