Benjamin, Charles Henry, 1856- [from old catalog], Hoffman, James David, 1868- [from old catalog] joint author · New York, H. Holt and company · leaf 289
loads 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, ^r&i — ^t= 8000 to 16,000, the exact value depending upon the rigidity… … applied. Let W^ Fig. 124 = the weight of the frame, then from theforce diagram we have the following moments about the end at 6 TFa; + TF% - (T7^ + TT,?,) -TFJs = 0but W\l, + WJ,, = W% and Wx = W,k. The length may then be obtained by adjusting the values of xand Z5 such that the equation will be…
Machine design
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