The Corinthian was the most typical Roman order, with the ideal height of the slender shaft to be eight times its diameter. The base of the column consists of a rectangular plinth, on top of which rest two convex moldings (torus) separated by a concave channel (scotia). The shaft, itself, is comprised of individual blocks (drums) or is a single monolithic piece, and decorated either with twenty-four carved vertical grooves (flutes) or left plain. The capital of acanthus leaves is surmounted by a square slab (abacus) that supports the entablature.