A dictionary of architecture and building; biographical, historical and descriptive (1901)
Sturgis, Russell, 1836-1909 · New York, Macmillan · leaf 566
vaults, over the aislesof polygonal aijses, as in Fig. 3.5. V. Polyijonal Vaults. These are mostly956 VAULT ortaKoiuil on the iilaii, iiiid are of the natureof the eiipohi. VI. Fuiivii Tritcery Wiidtiitg. This is avariety of solid vaulting, although it was devel-oped from the ribl)ed vaulting of… … square space may be [jartly covered by twohalves of the pyramidoid inverted and setopposite to each other. The bases are octag-onal. The halves may meet at points, Fig.36, leaving a star-shaped ridge space uncovered;or by sides. Fig. 37, leaving a square. If thenon-cardinal sides of the pyramidoid…
Architecture
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