Building construction and superintendence, by F.E. Kidder ... (1896)
Kidder, Frank E. (Frank Eugene), 1859-1905 · New York, W.T. Comstock · leaf 260
100 .Stress Diagram Fig. If, instead of a suspended load, the load is supported by twostruts, notched into a beam at the bottom, as in Fig. 273, the stressesin the struts and beam are found in precisely the same way as in Fig.271, but in this case it will be found that the arrow heads on a andb… … Fig. 273. 127.—Stresses in a Derrick.—Fig 274 is intended to representa boom derrick, with a load of 100 lbs. suspended from the end ofthe boom. Now, at the point x, three stresses are applied, viz., theload a, tensile stress in C, and a compressive stress in B. To findthe stresses in B and C draw…
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