A 'pediment' is a
classical architectural element consisting of the triangular section found above the horizontal structure (
entablature), typically supported by
columns. The
gable end of the pediment is surrounded by the
cornice moulding. The tympanum, or triangular area within the pediment, was often decorated with
sculptures and
reliefs demonstrating scenes of Greek and Roman
mythology or allegorical figures suitable to the nature of the building being adorned..
The pediment is found in
classical Greek temples, renaissance, and neo-classical architecture. A prominent example is the
Parthenon, where it served as a palette for beautiful, intricate sculptural detail, in the Roman
Pantheon no such sculpture was intended. This was developed in the
architecture of ancient Greece. In
Ancient Rome, the
Renaissance, and later
architectural revivals, the pediment was used as a non-structural element over windows, doors and aedicules.

Part of the eastern pediment on the
Parthenon.
A variant is the "segmental" pediment, where the normal angular slope of the raking cornice is replaced by one in the form of a segment of a circle, in the manner of a depressed arch. Both traditional and segmental pediments have "broken" and "open" forms. In the 'broken pediment' the raking cornice is left open at the apex. The 'open pediment' is open along the base – often used in
Georgian style architecture. A further variant is the "Swan-necked" pediment, where the raking cornice is in the form of two S-shaped
brackets. The decorations in the tympanum can extend through these openings, enriched with "
Alto-relievo" sculpture, "
tondo" paintings, mirrors or windows. These forms were adopted in
Mannerist architecture, and applied to
furniture designed, or inspired, by
Thomas Chippendale.
Significant pediments in the United States
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United States Capitol,
Washington D.C.
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United States Supreme Court building, Washington D.C.
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National Archives Building, Washington D.C.
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Wisconsin State Capitol,
Madison, Wisconsin
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Wayne County Building,
Detroit, Michigan
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New York Stock Exchange Building,
New York City
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San Francisco City Hall,
San Francisco, California
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Missouri State Capitol,
Jefferson City, Missouri
See also
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Gable
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Temple (Greek)
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Temple (Roman)
Gallery
References
★ ''Dictionary of Ornament'' by Philippa Lewis & Gillian Darley (1986) NY: Pantheon
External Links
★ Pediment sculptures in Washington, DC:
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Labor & ICC Buildings
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Commerce Building
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National Archives
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Supreme Court