Linked from
The 15 pages that link to Rib vault, each with the reason it gives.
Gothic architectureBroader topic: Ribs concentrated vault loads and made complex ceilings possible.
Pointed archRelated: Pointed arches commonly form the ribs that define Gothic vaults.
Milan CathedralBroader topic: Ribbed vaulting structures the cathedral’s lofty interior bays.
SugerRelated: Rib vaulting helped span the rebuilt choir while leaving room for larger windows.