A dictionary of architecture and building; biographical, historical and descriptive (1901)
Sturgis, Russell, 1836-1909 · New York, Macmillan · leaf 564
Fig. 88 (See Fig. 87). extending the groin and transverse ribs to thecentre. 966 VAULT (&) Figures 6G, 07, show how irregular spacesmay be covered by vaults with eight cells. (c) Covering an octagonal space. Figure 68is a plan, ami G9 a section, of an octagonal vaultwhose internal angles are… … Fig. 89 (Pl.*.n). (d) Figure 70 has the same ribs as (c), butthey are groin ribs, and there are sixteen cells. (e) Figure 71, Welsh vaulting. ( f) Figure 72, gioin ribs not meeting at thecentre, but terminating at the angles of an octa-gon — York cathedral. (g) Figures 73, 74, eight semicircular…
Architecture
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