What is an ogee arch?

An ogee arch is an elegant arch form consisting of two S-shaped curves that meet at a point, giving the profile the shape of an ogee moulding. This arch form is found primarily in late Gothic architecture (14th–16th century) and is sometimes called a keel arch.

Construction

The ogee arch is composed of four arc segments:

  1. The arch begins on both sides with a concave (hollow) curve that bends inward
  2. Midway up, the line transitions into a convex (rounded) curve that sweeps upward
  3. The two upper curves meet at a point (the apex of the ogee)
  4. The apex is often crowned with a finial or other ornamental feature

The result is a graceful, slender arch form that appears to reach upward — characteristic of the vertical dynamism of Gothic architecture.

Application

The ogee arch is almost exclusively a decorative element with no structural function. It is used as a frame or crowning feature:

Related arch forms

Related terms

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