Benjamin, Charles H[enry], 1856- [from old catalog] · New York, H. Holt and company · leaf 300
applying the formula S^ — W(y + G) exercise care in obtain- Z{t or c) ing a satisfactory value for Z in the unsysmmetrical section. Toget Z it will be necessary to determine the moment of inertia I ofthe section and then find Z by the following: for tension Zt for compression Z^ lor compression… … Fig. 132. any line of reference as ah, take the algebraic sum of the moments ofeach rectangular section about this line of reference and divide bythe total area; this will give the distance x between the line of referenceand the gravity axis gg of the section, ab may be taken at anyposition in the…
Machine design
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