Ogee

An ogee arch, even donkey back, saddle-bow, bow called Scottish or Accolade referred, in architecture a bow with curly edges that are curved convex and concave in the upper part of the lower part. The outline of the arc is therefore similar to an upside-down ship's keel. The center points of the two lower arcs are within the circle of the upper sheets of the sheet outside the field. When both lower circle center points coincide at one point, produced a common form of the keel-shaped, they are apart, the arc gets a gedrücktere form. If the arc is, however, is constructed such that it is a variant of the pointed arch, which has only a small reverse curve at the top, it is called a donkey. The name derives from the outstanding backbone of the donkey.

Ogee arches were used frequently since the 15th century in the late Gothic period and not before about 1100 in the Islamic architecture. There, this arch shape experienced in the 12th century in the Persian and Egyptian architecture peaked. Ogee arches are found most frequently as the top component of a portal or window, either as a correspondingly shaped Archivolts, lintels or pediments in the form of Verdachungen or crowning. Accordingly, these components ogee window or keel -arched portal called.

  • Examples

Keel -arched portal of a church in Dumfries, Scotland

Late Gothic seat niche portal with a five-fold ogee arch ( 1506) at the Peter- Ulrich- house in Pirna

Ogee arch window at a house in La Garriga, Spain

Kiel bow windows at Corvaja in Taormina, Italy

474890
de