Kidder, Frank E. (Frank Eugene), 1859-1905 · New York, Comstock · leaf 410
concrete, or even entirely of concrete. When builtentirely of concrete, however, very strong centers are required. Fig. 230* shows a method of constructing vaults mvich used bythe ancient Romans. A light temporary center of wood was firstput in place, and on this light brick arches were built to…
Building · Carpentry · Masonry
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