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impost =
A traditional member, often
tapered, placed above a col-
umn capital to receive the
thrust of vaults or arches.
A. impost of great arch.
B. impost of apse vaulting.
C. impost of wall arcades.
inlay, intarsia, marquetry =
A shaped piece of one material
embedded in another as part of
a surface ornamentation. Also
such ornamentation as a whole.
Also see: encaustic tile.
interlacing arcade =
Arches resting on alternate
supports in one row, the
arches overlapping in series
where they cross. Also
called intersecting arcades.
inverted arch =
An arch with its
intrados
below
the
springing
line; used to dis-
tribute concen-
trated loads in
foundations.
impost
inlay
interlacing arcade
inverted arch