The church is covered by a barrel vault, the crossing of the transepts being crowned by a dome.
The barrel vault (a half cylinder) was known to the Egyptians and Assyrians.
They were a variant of the barrel vault of the region preferred because less material was required.
The Corpus Domini has its own sculptured doorway, and three bays covered by a barrel vault carried on pointed arches.
The cathedral of Autun has a barrel vault undergirded by pointed arches.
Thomas did not believe that a barrel vault was used in these apartments; the span would have been too great.
The central aisle has a barrel vault, and the side aisles quadripartite vaults.
The planks covered the barrel vault, which was called "Arches," situated beneath the roof.
Most elaborate of all is the barrel vault, where each coffer is filled with round or square panels surrounded with strapwork.
Over 200 feet long, it has a dome-surmounted transept in the middle, and a barrel vault divided into panels.