See also:primary meaning, one of the series of elastic arched bones (costae) which
See also:form the casing or framework of the thorax (see
See also:SKELETON: Axial) . The word is in meaning transferred to many
See also:objects resembling a
See also:rib in shape or
See also:function . In architecture, it is thus used of the
See also:arches of
See also:stone which in
See also:work constitute the skeleton of the vault, and carry the
See also:shell or
See also:web . Although in the
See also:Roman vault the rib played an important
See also:element in its construction, it was generally hidden in the thickness of the vault and was made subservient to its geometrical surfaces . The
See also:Gothic masons, on the other
See also:hand, reversed the
See also:process, and not only made the vaulting
See also:surface ' subservient to the rib, but by
See also:mouldings rendered the latter a highly decorative feature . The
See also:principal ribs are the transverse (arc doubleau), the diagonal (arc
See also:ogive) and the
See also:wall rib (
See also:formeret) . Those of less importance are the intermediate, the
See also:ridge and lierne ribs . The ridge-rib is one first introduced into the vault to resist the thrust of the intermediate ribs between the wall and diagonal ribs; it also served to mark the junction of the filling-in or web of vaults in those cases where the courses dipped toward the diagonal rib . (See VAULT.) A lierne rib (the
See also:term is borrowed from the French) is 'a
See also:short rib, introduced into the vaulting in the Early Perpendicular
See also:period, which coupled together the transverse and intermediate ribs; in the later period the " lierne " rib becomes one of the chief features of the " stella " vault (see further VAULT) .
RIAZ PASHA (c. 1835– )
PEDRO A RIBADENEIRA
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