Transverse rib
Encyclopedia
A Transverse rib is the term in architecture
Architecture
Architecture is both the process and product of planning, designing and construction. Architectural works, in the material form of buildings, are often perceived as cultural and political symbols and as works of art...

 given to the rib of a rib vault
Rib vault
The intersection of two or three barrel vaults produces a rib vault or ribbed vault when they are edged with an armature of piped masonry often carved in decorative patterns; compare groin vault, an older form of vault construction...

 which is carried across the nave
Nave
In Romanesque and Gothic Christian abbey, cathedral basilica and church architecture, the nave is the central approach to the high altar, the main body of the church. "Nave" was probably suggested by the keel shape of its vaulting...

, dividing the same into bays. Although as a rule it was sunk in the barrel vault
Barrel vault
A barrel vault, also known as a tunnel vault or a wagon vault, is an architectural element formed by the extrusion of a single curve along a given distance. The curves are typically circular in shape, lending a semi-cylindrical appearance to the total design...

 of the Thermae
Thermae
In ancient Rome, thermae and balnea were facilities for bathing...

, it is found occasionally below it, as in the Piscina
Piscina
A piscina is a shallow basin placed near the altar of a church, used for washing the communion vessels. The sacrarium is the drain itself. Anglicans usually refer to the basin, calling it a piscina. Roman Catholics usually refer to the drain, and by extension, the basin, as the sacrarium...

 at Baiae
Baiae
Baiae , a frazione of the comune of Bacoli) in the Campania region of Italy was a Roman seaside resort on the Bay of Naples. It was said to have been named after Baius, who was supposedly buried there. Baiae was for several hundred years a fashionable resort, especially towards the end of the Roman...

 and the so-called Baths of Diana (Nymphaeum
Nymphaeum
A nymphaeum or nymphaion , in ancient Greece and Rome, was a monument consecrated to the nymphs, especially those of springs....

) at Nîmes
Nîmes
Nîmes is the capital of the Gard department in the Languedoc-Roussillon region in southern France. Nîmes has a rich history, dating back to the Roman Empire, and is a popular tourist destination.-History:...

. In the Romanesque
Romanesque architecture
Romanesque architecture is an architectural style of Medieval Europe characterised by semi-circular arches. There is no consensus for the beginning date of the Romanesque architecture, with proposals ranging from the 6th to the 10th century. It developed in the 12th century into the Gothic style,...

 and Gothic
Gothic architecture
Gothic architecture is a style of architecture that flourished during the high and late medieval period. It evolved from Romanesque architecture and was succeeded by Renaissance architecture....

styles it becomes the principal feature of the vault, so much so that Scott termed it the "master rib".
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