Benjamin, Charles H[enry], 1856- [from old catalog] · New York, H. Holt and company · leaf 291
ds it is advisableto specify one or more steel I beams orchannels from Cambria, this may be done bymaking a trial selection of a section and substituting the valueof Z and A in the formulas as before. If this value *S, ■^&2 = &i= 8000 to 16,000, the exact value depending upon the rigidity… … Fig. 124. applied. Let W^ Fig. 124 = the weight of the frame, then from theforce diagram we have the following moments about the end at 6 Wx + ^Y% -(ir,^, + W^:) -TF^^s =0but W^^ + W,l, = Wl, and Wx = W.l,. The length may then be obtained by adjusting the values of xand Zg such that the equation…
Machine design
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