Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 155
d and roadway floors had not been built to the exact lines of parabolas. It is true the beauty of the tubes, with their compactness and simplicity, was partly obtained by striving for the advantage of a protection of the compression members, the six enclosed staves, against atmospheric influence in… … Fig. 4.
Engineering
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