Concept

Cavetto

A cavetto is a concave moulding with a regular curved profile that is part of a circle, widely used in architecture as well as furniture, picture frames, metalwork and other decorative arts. In describing vessels and similar shapes in pottery, metalwork and related fields, "cavetto" may be used of a variety of concave curves running round objects. The word comes from Italian, as a diminutive of cave, from the Latin for "hollow" (it is the same root as cave). A vernacular alternative is "cove", most often used where interior walls curve at the top to make a transition to the roof, or for "upside down" cavettos at the bases of elements. The cavetto moulding is the opposite of the convex, bulging, ovolo, which is equally common in the tradition of Western classical architecture. Both bring the surface forward, and are often combined with other elements of moulding. Usually they include a curve through about a quarter-circle (90°). A concave moulding of about a full semi-circle is known as a "scotia". Only a minor element of decoration in classical architecture, the prominent cavetto cornice is a common feature of the ancient architecture of Egypt and the Ancient Near East. Ancient Egyptian architecture made special use of large cavetto mouldings as a cornice, with only a short fillet (plain vertical face) above, and a torus moulding (convex semi-circle) below. This cavetto cornice is sometimes also known as an "Egyptian cornice", "hollow and roll" or "gorge cornice", and has been suggested to be a reminiscence in stone architecture of the primitive use of bound bunches of reeds as supports for buildings, the weight of the roof bending their tops out. Many types of Egyptian capitals for columns are essentially cavettos running round the shaft, often with added decoration. These include the types known as "bell capitals" or "papyrus capitals". These features are often reproduced in Egyptian Revival architecture, as in the Egyptian Building (1845) in Richmond, Virginia.

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