Groined Vault:
A rib-less vault formed by the meeting of a pair of equal barrel vaults at right angle to each other.
Grotesques: ...
groined vault - two barrel vaults intersecting at right angles
fenestella, lunette - oval or circular opening; to allow light into a dome or vault
ribbed vault - vault that resembles a groined vault but has ribbed arches ...
Cross or Groined vault
- where two barrel vaults of identical shape intersect at right angles.
Also known as a groined vault.
See vault.
The date is not recorded; no early examples remain in Lombardy, but in Normandy we find, about 1050, churches which possess aisles covered by square, groined vaults, with the transverse arches showing.
Since the piers would bend under the action of the thrusts and, possibly, buckle under the action of the vertical loads, the groined vaults, although ribbed, had to be buttressed.
The intersecting and groined vault of the Romans was employed in the early Christian churches in Rome, but only over the aisles, which were comparatively of small span, but in these there was a tendency to raise the centres of these vaults, ...
Romanesque antecedents of the Gothic ribbed vault are the barrel vault and the groined vault. The ribbed vault is composed of diagonally arched ribs and can be classified as tri-partite, quatri-partite (fig.5, D), or sexpartite.
Vault
An arched brick or stone ceiling or roof. The simplest form is the barrel vault, a single continuous arch; the groined vault consists of two-barrel vaults joined at right angles; a ribbed vault has a web of ribs added to the groins.
Rib vault - A projecting band on a ceiling or vault, usually structural but sometimes purely decorative, separating the cells of a groined vault.
Santa Maria delle Grazie
Rinceau - An ornamental motif of scrolls of foliage, usually vine.
The simplest form is the barrel vault, a single continuous arch; the groined vault consists of two barrel vaults joined at right angles; a ribbed vault has diagonal arches projecting from the surface.
 See also: Groined, Groin, Vault, Barrel, Barrel vault
  
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