Horton, Caroline W · New York, Hurd and Houghton; Cambridge, The Riverside press · leaf 40
f likeproportions. When a dome is constructed of stone,the constituent parts should have the same form,that of the frustum of a pyramid, only in spheroid-al domes, the inner surface must be concave, andthe outer one convex. This form of structure ismore durable than the arch, since each part is… … 3 o A rchitectiire. completed, and this with the utmost security. Thedome of the Pantheon at Rome, which has stoodunimpaired for nearly two thousand years, has anopening some 28 feet in diameter. There the outerand inner surfaces are of different curvatures, thethickness increasing downwards.…
Architecture
Internet Archive · New York Public Library · Public Domain Mark 1.0. Free to use for anything.
