. Medieval architecture, its origins and development, with lists of monuments and bibliographies. enclosure at CaracallasBaths, in the so-called temple of ^Minerva Medica, and else-where. In these early attempts the dome was built always on Pendentives were known in the East at a very early epoch. In the Western Tomb atAmman, a dome is placed upon a square base; and at Kusr-en-Nueijis, Jerash, Jerusalem,Ismid, and Sart there are true pcndentive vaults dating from the II or III century Thisconstruction was merely reproduced in the monuments of the late V century at Ravenna,while the only t
. Medieval architecture, its origins and development, with lists of monuments and bibliographies. enclosure at CaracallasBaths, in the so-called temple of ^Minerva Medica, and else-where. In these early attempts the dome was built always on Pendentives were known in the East at a very early epoch. In the Western Tomb atAmman, a dome is placed upon a square base; and at Kusr-en-Nueijis, Jerash, Jerusalem,Ismid, and Sart there are true pcndentive vaults dating from the II or III century Thisconstruction was merely reproduced in the monuments of the late V century at Ravenna,while the only true innovation introduced at Ilagia Sophia was the placing of a dome ofsmaller diameter iiiHm the [xMidentives; in the earlier examples the curve of the pendentiveshad l)een continued to form the entire vault. 105 BYZANTINE ARCHITECTURE the plan of the inscribed circle, so that it fitted perfectly at themiddle of each side of the area to be roofed, but cut across thecorners, where it left a part of the base of the dome hold up these unsupported parts resort was had to the expe-. IlX. 74. — Squinch of Omm-es-Zeitoun (c. 282 ) (From Rivoira,by Special Permission) dient of corbeling out the masonry. One stone was made toproject a little farther than the others until the polygon wasworked into cylindiical form. This device is known as asquinch (111. 74). Obviously the smaller the scale and thelarger the number of sides of the polygon, the more success-fully the expedient may be applied. But it was at best amakeshift, and its greatest interest as a constructive form lies 106
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Keywords: ., bookcentury1900, bookdecad, booksubjectarchitecture, bookyear1912
