A dictionary of architecture and building; biographical, historical and descriptive (1901)
Sturgis, Russell, 1836-1909 · New York, Macmillan · leaf 560
). The first step in the development of the ribsystem of vaulting is often said to be the in-crease of the depth of the cross band in barrelvaidts, making it an independent arch, withthe vaulting above it. But such a rib, if it isproperly so called, does not sustain the vaidt,which would stand just… … FiG. T-. ning of the rib system ^rill doubtless be foundin the substitution of a square-cornered archfor the groin stones of a solid compound vault,as in Fig. 42, from S. Ambrogio, MUan. This959 VAULT is a great advance in ease of construction. Theshaping of groin stones is quite a problem…
Architecture
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