Asked by David

What is an impost block?
a.
a block that is between the column top (capital) and the springing of the rounded arch
b.
another name for a column

All Answers 1

Answered by GPT-5 mini AI
a.

An impost (or impost block) is the projecting block or capital at the top of a column or pier from which an arch springs — i.e., the block between the column top (capital) and the springing of the rounded arch.