Types of pediment; "curved" and "broken" examples at the lower right
Pediments are a form ofgable inclassical architecture, usually of a triangular shape. Pediments are placed above the horizontal structure of thecornice (an elaboratedlintel), orentablature if supported bycolumns.[1] In ancient architecture, a wide and low triangular pediment (the side angles 12.5° to 16°) typically formed the top element of theportico of aGreek temple, a style continued inRoman temples. But large pediments were rare on other types of building beforeRenaissance architecture.[2] For symmetric designs, it provides a center point and is often used to add grandness to entrances.
The cornice continues round the top of the pediment, as well as below it; the rising sides are often called the "raking cornice".[4] Thetympanum is the triangular area within the pediment, which is often decorated with apedimental sculpture which may be freestanding or arelief sculpture.[5] The tympanum may hold an inscription, or in modern times, a clock face.
The main variant shapes are the "segmental", "curved", or "arch" pediment, where the straight line triangle of the cornice is replaced by a curve making a segment of a circle, thebroken pediment where the cornice has a gap at the apex,[1] and theopen pediment, with a gap in the cornice along the base. Both triangular and segmental pediments can have "broken" and "open" forms.[1]
A variant is the "segmental" or "arch" pediment, where the normal angular slopes of the cornice are replaced by one in the form of a segment of a circle, in the manner of a depressed arch.[1] Both traditional and segmental pediments have "broken" and "open" forms. In thebroken pediment the raking cornice is left open at the apex.[1] Theopen pediment is open along the base, with a gap in the cornice for part or all of the space under the pediment.[8]
All these forms were used inHellenistic architecture, especially inAlexandria and theMiddle East. The so-called "Treasury" orAl-Khazneh, a 1st-centuryrock-cut tomb inPetra, Jordan, is a famously extreme example, with not merely the pediment, but the wholeentablature, very "broken" and retreating into the cliff face.[9] Broken pediments where the gap is extremely wide in this way are often called "half-pediments".
They were adopted inMannerist architecture, and applied tofurniture designed byThomas Chippendale. Another variant is theswan's neck pediment, a broken pediment with two S-shaped profiles resembling a swan's neck, typicallyvolutes; this is mostly found in furniture rather than buildings. It was popular in American doorways from the 1760s onwards. Very often there is a vase-like ornament in the middle, between the volutes. Non-triangular variations of pediments are often found over doors, windows, niches, and porches.
The pediment is found in classical Greek temples, Etruscan, Roman, Renaissance, Baroque, Rococo, Neoclassical, and Beaux-Arts architecture. Greek temples, normally rectangular in plan, generally had a pediment at each end, but Roman temples, and subsequent revivals, often had only one, in both cases across the whole width of the main front or facade. The rear of the typical Roman temple was a blank wall, usually without columns, but often a full pediment above. This effectively divorced the pediment from the columns beneath it in the original temple front ensemble, and thereafter it was no longer considered necessary for a pediment to be above columns.
The most famous example of the Greek scheme is theParthenon, with twotympanums filled with large groups of sculpted figures.[5] An extreme but very influential example of the Roman style is thePantheon, Rome, where a portico with pediment fronts a circular temple.[10]
In the Hellenistic period pediments became used for a wider range of buildings, and treated much more freely, especially outside Greece itself. Broken and open pediments are used in a way that is often described as "baroque". The large 2nd-centuryMarket Gate of Miletus, now reconstructed in thePergamon Museum inBerlin, has a pediment that retreats in the centre, so appears both broken and open, a feature also seen at theAl-Khazneh (so-called "Treasury") tomb atPetra in modernJordan. The broken pediments on each of the four sides of theArch of Septimius Severus atLeptis Magna inLibya are very small elements, raking at an extremely steep angle, but not extending beyond the entablature for the columns below. There are two faces to each pediment, both carved, with one lying parallel to the wall of the monument, and the other at right angles to that.
TheArch of Augustus inRimini, Italy (27 BC), an early imperial monument, suggests that at this stage provincial Roman architects were not well practiced in the classical vocabulary; the base of the pediment ends close to, but not over, the capitals of the columns. Here the whole temple front is decoration applied to a very solid wall, but the lack of respect for the conventions of Greektrabeated architecture remains rather disconcerting.[13]
Conventional Roman pediments have a slightly steeper pitch than classical Greek ones, perhaps because they ended tiled roofs that received heavier rainfall.
Reconstruction drawing of the facade of theTemple of Aphaia,Aegina, Greece, including its pediment, unknown temple architect or illustrator,c.500 BC
Reconstruction drawing of the facade of theTemple of Zeus,Olympia, Greece, including its pediment, unknown architect or illustrator,c.472-456 BC
Reconstruction drawing of the facade of theTemple of Hellanius Zeus, Aegina, including its pediment, showing thepolychromy all ancient sculptures and buildings had, unknown architect, illustrated byCharles Garnier in 1852, unknown date
One of the few sections of the sculpture of the Ancient Greek pediment of theParthenon still in place; others are theElgin Marbles in theBritish Museum, London
Illustrations with the sculptures of the two pediments of the Parthenon, byJames Stuart andNicholas Revett in 1794
InCarolingian andRomanesque architecture pediments tended towards theequilateral triangle, and the enclosing cornice has little emphasis; they are often merely gable ends with some ornament. InGothic architecture pediments with a much moreacute angle at the top were used, especially over doorways and windows, but while the rising sides of the cornice is elaborate, the horizontal bottom element was typically not very distinct. Often there is apointed arch underneath, and no bottom element at all. "Pediment" is typically not used for these; they are often called a "canopy". From the Renaissance onwards, some pediments no longer fitted the steeply pitched roofs and became freestanding, sometimes sloping in the opposite direction to the roof behind.
In most of these, Alberti followed classical precedent by having the pediment occupy the whole width of the facade, or at least that part that projects outwards. Santa Maria Novella andSant'Agostino, Rome (1483, byGiacomo di Pietrasanta, perhaps designed by Alberti) were early examples of what was to become a very common scheme, where the pediment at the top of the facade was much less wide, forming a third zone above a middle zone that transitioned the width from that of the bottom. The giant curvingvolute orscroll used at the sides of the middle zone at Sant'Agostino was to be a very common feature over the next two centuries. As in Gothic architecture, this often reflected the shapes of the roofs behind, where thenave was higher than the side-aisles.[15]
Sant'Agostino also has a low, squashed down pediment at the top of the full-width section.[16] This theme was developed byAndrea Palladio in the next century. The main facade of hisSan Giorgio Maggiore inVenice (begun 1566) has "two interpenetrating temple fronts", a wider one being overlaid with a narrower and higher one, respectively following the roof lines of the aisles and nave.[17] Several of Palladio's villas also introduced the pediment to country house architecture, which was to be become extremely common in EnglishPalladian architecture. In cities, Palladio reserved the temple front for churches, but in the Baroque, and especially outside Italy, this distinction was abandoned.
The first use of pediments over windows in the Renaissance was on thePalazzo Bartolini Salimbeni in Florence, completed in 1523 byBaccio d'Agnolo.Vasari says the innovation caused ridicule initially, but later came to be admired and widely adopted.[18] Baccio was accused of turning apalazzo into a church. Three windows on each of three storeys (and the door) alternate regular and segmental pediments; there is no pediment at the top of the facade, just a large cornice, as was usual.[19]
InSt Peter's Basilica there is a conventional pediment over the main entrance, but the complicated facade stretches beyond it to both sides and above, and though large in absolute terms it makes a relatively small impression. Many later buildings used a temple front with pediment as a highlight of a much wider building. The St Peter's facade also has many small pedimented windows andaedicular niches, using a mixture of segmental, broken, and open pediments.
Variations using multiple pediments became very popular inBaroque architecture, and the central vertical line of church facades often ascended through several pediments of different sizes and shapes, in Rome five at theChurch of the Gesù (Giacomo della Porta 1584) and six atSanti Vincenzo e Anastasio a Trevi (Martino Longhi the Younger, 1646), the top three folding into each other, using the same base line.[20] This facade has been described as "a veritable symphony in repetitious pedimentry, bringing together a superimposed array of broken pediments, open pediments and arched pediments".[9] The Gesù is the home church of theJesuit order, who favoured this style, which was first seen in many cities around Europe in a new main Jesuit church.
Pediments became extremely common on the main facades ofEnglish country houses, and many across northern Europe; these might be placed over a porch with columns, or simply decorations to an essentially flat facade. In England, if there was any sculpture within the tympanum, it was often restricted to acoat of arms.
Neoclassical architecture returned to "purer" classical models mostly using conventional triangular pediments, often over a portico with columns. Large schemes ofpedimental sculpture were used where the budget allowed. In 19th-century styles, freer treatments returned, and large segmental pediments were especially popular in eclectic styles such asBeaux-Arts architecture, often overwhelmed by sculpture within, above, and to the sides.
Large pediments with columns, often called the "temple front", became widely used for important public buildings such asstock exchanges,reserve banks, law courts, legislatures, and museums, where an impression of solidity, reliability, and respectability was desired.
Postmodernism, a movement that questionedModernism (thestatus quo after WW2), promoted the inclusion of elements of historic styles in new designs. An early text questioning Modernism was by architectRobert Venturi,Complexity and Contradiction in Architecture (1966), in which he recommended a revival of the 'presence of the past' in architectural design. He tried to include in his own buildings qualities that he described as 'inclusion, inconsistency, compromise, accommodation, adaptation, superadjacency, equivalence, multiple focus, juxtaposition, or good and bad space.'[30]
Venturi encouraged 'quotation', which means reusing elements of the past in new designs. Part manifesto, part architectural scrapbook accumulated over the previous decade, the book represented the vision for a new generation of architects and designers who had grown up with Modernism but who felt increasingly constrained by its perceived rigidities. Multiple Postmodern architects and designers put simplified reinterpretations of the pediment found in Classical decoration at the top of their creations. As with other elements and ornaments taken from styles of the pre-Modern past, they were in most cases highly simplified. Especially when it comes to office architecture, Postmodernism was only skin deep; the underlying structure was usually very similar, if not identical, to that of Modernist buildings.[31]
^Broken and open pediments are often confused by sources unfamiliar with the correct terminology, although some pediments can reasonably be described as both. SeeJohn Fleming,Hugh Honour andNikolaus Pevsner,The Penguin Dictionary of Architecture, 240, 3rd edn, 1980, Penguin, ISBN 0140510133. They recommend using "open-topped" or "broken-apex" and "open-bed" or "broken-bed", but these cannot be said to have caught on.
^Favro, Diane, entry in theEncyclopedia of the History of Classical Archaeology, p. 65, 2015, ed. Nancy Thomson de Grummond, Taylor & Francis, ISBN 9781134268542,google books
^Eastmond, Anthony (2013).The Glory of Byzantium and early Christendom. Phaidon. p. 45.ISBN978-0-7148-4810-5.
^Criticos, Mihaela (2009).Art Deco sau Modernismul Bine Temperat - Art Deco or Well-Tempered Modernism (in Romanian and English). SIMETRIA. p. 192.ISBN978-973-1872-03-2.