Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 180
en the inventors of rubble vaults; that is to say, of vaults of small stones bound to- gether with mortar, but it is certain that before them no one thought of constructing vaults of large span of such materials. With them it seems to have been developed during the latter days of the republic and… … Fig. 7. If one inspects an edifice vaulted with rubble, as for example the great Baths of Caracalla, he will perceive on the face an arch of brick with radiating joints, and behind these face arches a rough masonry similar to the interior of the walls we have described, but if one examines these…
Engineering
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