A masonry roof or ceiling constructed on the arch principle.

A barrel or tunnel vault, semicylindrical in cross section, is in effect a deep arch or an uninterrupted series of arches, one behind the other, over an oblong space.

In a cross-barrel vault, the main barrel (tunnel) vault is intersected at right angles with other barrel (tunnel) vaults at regular intervals.

A quadrant vault is a half-barrel (tunnel) vault.

A sexpartile vault is a rib vault with six panels.

A fan vault is a development of lierne vaulting characteristic of English Perpendicular Gothic, in which radiating ribs form a fan-like pattern.

A cross vault (or groin) is formed at the point at which two barrel (tunnel) vaults intersect at right angles.

In a ribbed vault, there is a framework of ribs or arches under the intersections of the vaulting sections.