A pendentive is a constructive device permitting the placing of a circular dome over a square room or an ellipticaldome over a rectangular room. The pendentives, which are triangular segments of a sphere, taper to points at the bottom and spread at the top to establish the continuous circular or elliptical base needed for the dome. In masonry the pendentives thus receive the weight of the dome, concentrating it at the four corners where it can be received by the piers beneath. Prior to the pendentive's development, the device of corbelling or the use of the squinch in the corners of a room had been employed. The first attempts at pendentives were made by the Romans, but full achievement of the form was reached only by the Byzantines in Hagia Sophia at Constantinople (6th cent.). Pendentives were commonly used in Renaissance and baroque churches, with a drum often inserted between the dome and pendentives. Image File history File links Download high-resolution version (1600x1200, 148 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Pendentive ... Image File history File links Download high-resolution version (1600x1200, 148 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Pendentive ... Image File history File links Download high-resolution version (768x1024, 500 KB) I took this picture on May 7, 2006. ... Image File history File links Download high-resolution version (768x1024, 500 KB) I took this picture on May 7, 2006. ... This article includes a list of works cited but its sources remain unclear because it lacks in-text citations. ... This article includes a list of works cited but its sources remain unclear because it lacks in-text citations. ... The ellipse and some of its mathematical properties. ... This article includes a list of works cited but its sources remain unclear because it lacks in-text citations. ... A sphere is a perfectly symmetrical geometrical object. ... For the type of foundation, see Deep foundation. ... Elaborately decorated classical-style stone corbels support balconies on a building in Indianapolis. ... A squinch in architecture is a piece of construction used for filling in the upper angles of a square room so as to form a proper base to receive an octagonal or spherical dome. ... YOU ARE GAY ... Byzantine Empire is the term conventionally used to describe the Roman Empire during the Middle Ages, centered around its capital in Constantinople. ... This article includes a list of works cited but its sources remain unclear because it lacks in-text citations. ... Map of Constantinople. ... Raphael was famous for depicting illustrious figures of the Classical past with the features of his Renaissance contemporaries. ... Adoration, by Peter Paul Rubens. ...
The pendentives, which are triangular segments of a sphere, taper to points at the bottom and spread at the top to establish the continuous circular or elliptical base needed for the dome.
Prior to the pendentive's development, the device of corbelling or the use of the squinch in the corners of a room had been employed.
Pendentives were commonly used in Renaissance and baroque churches, with a drum often inserted between the dome and pendentives.
PENDENTIVE, the term given in architecture to the bridging across the angles of a square hall, so as to obtain a circular base for a dome or drain.
Sergius and Bacchus at Constantinople a portion of the dome is set back; or again, by a third method, by sinking a semicircular niche in the angle.
The second is found in the Sassanian palaces of Serbistan and Firuzabad, and in medieval architecture in England, France and Germany, where the arches are termed " squinches." The third system is found in the mosque at Damascus, and was often adopted in the churches in Asia Minor.
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