Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 253
METRY [XI, § 198 it is desired to reduce the supporting walls to four piers, it canbe done by substituting, in place of the walls, four arches,sprung between the piers, as shown in Fig. 220. So far as thedome is concerned, the shape is the same whether it is carriedon walls or on piers and arches.… … •HALF Pl*H mOKINC U(,-Fig. 220 the square base are equal. This construction leaves the spacesabc, etc., which are not covered by the dome, and the dome isnot supported by the base along the lines ac, etc. The necessarycoverings and supports are furnished by Billing in these spacesin one of several…
Geometry, Descriptive
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