A simple roof having a curved, often semicircular cross section; used to span large distances in railway stations, churches, etc. Usually supported on columns
Cylindrical roof; The simplest form of a vault, consisting of a continuous surface of semicircular or pointed sections It resembles a barrel or tunnel which has been cut in half lengthwise Types of barrel vault: longitudinal
The Kimmel Center's semicircular glass-and-steel roof is called a barrel vault because it resembles a large glass barrel that has been cut in half lengthwise and positioned on its side
The simplest form of masonry vault, consisting of a continuous plain vault with semi-cylindrical or pointed cross-section, unbroken by cross vaults, and covering a rectangular space