Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 211
be the onlymethod of construction upon which they depended to any extent.The Romans, on the contrary, adopted the arch (see Fig. 96) to carryacross all openings; and they further extended its use, in the form of avault, to the covering of rooms or voids which they desired to roof in.The principle… … The arch itself dates back to a much earUer period. There areexamples in Egypt of brick barrel vaults composed of three rings ofvoiissoirs, built about 3500 B. C; but the Etruscans, by their use of cut stone instead of brick for thispurpose, evidenced a muchhigher engineering skill, at leastso far…
Architecture · Building · Carpentry
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