impost block or abacus
The slab at the top of a capital between the capital and the architectural member above. See also column, pier
incised ...
Impost block
a block between a capital of a column and the springing of an arch.
Impluvium (pl. impluvia) ...
Impost Block
In architecture, a stone slab with the shape of a truncated, inverted pyramid that is placed between a capital and the architectural member above it.
Dosseret, or impost block - cubical block of stone above the capitals in a Byzantine church, used to carry the arches and vault, the springing of which had a superficial area greatly in excess of the column which carried them.
Other parts of columns and piers: abacus or impost block, capital, shaft Bas-relief: Sculpture in which the carved forms project only slightly from the background.
Horizontal moulding at the springing of an arch.Impost block
On a column, a block between abacus and capital.In antis ...
base: The architectural element on which a column or pier rests. Other parts of columns and piers: shaft, capital, abacus or impost block.
entablature or impost block. The term is also applied to the galleries, employed decoratively, on the facades of the Italian churches, and carried round the apses where they are known as eaves-galleries.
 See also: Impost, Capital, Decorated, Church, System
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