ce to vertical pressure, Nature, in her workings, suppliesthe deficiency by filling up the concave side with a thickerstratum of hard bone, and a proportionate thinner stratum onthe convex side, to make up for the loss of strength arising fromthe curvature of the pillar, as shown at b h. It is thus… … cannot deviate without incurrins: the risk of failure in all themodifications of constructive art.* On the subject of wrought-iron bridges it is to be observed, * See Mr. Fairbairns description of the Tubular Crane.—T, ansactions of theBritish Association for thi Advancancnt of Science, Sections in…
Building, Iron and steel
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