Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 267
al; allowing the usual factorof safety, the load is obtained as in the example above. The deeper the blockbeneath the centre of the beam, the less the stress on the rods for the sameload. In construction, the beam should not be cambered by the screwing up 250 MACHINE DESIGN AND MECHANICAL… … Fig. 500. Fig. 500 represents the trussing of a beam by two struts and a tension-rod.The stress on the tension-rod is the load on c, multiplied by the length a d^divided by c d. The theory of trusses will be treated and illustrated under Bridges and Eoofs, and the proportions of rivets and forms of…
Mechanical drawing
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