Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 654
it will be perceivedthat the fracture of the top of the beam was produced by compression, andthat of the bottom by extension. Dividing 25868 lbs. by 6.8151 squareinches, it will be found that this beam broke under a pressure of 5796 lbs.per square inch of cross section; and an inspection of the… … J?icj 7. Fig. 5.
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