Notes and examples in mechanics; with an appendix on the graphical statics of mechanism; (1897)
Church, Irving P. (Irving Porter), 1851-1931 · New York, J. Wiley & Sons · leaf 88
le height of the figure (from the axis X) into an eoen number n of eqiial parts, and through each point of division draw a parallel to X, thus determining a series of widths, ^0, -^1, ^2? etc. For example, this construction being made for the ujpjper part of the rail-section in Fig. 93, with n — ^^… … Fig. 93. 80 NOTES AND EXAMPLES IN MECHANICS. z, zr: 0, s, = is,, z^ = |s,, 2, = p,, etc), we have, as the I^ of the portion of the rail-section lying above the axis X, (152Y |^,[0 + 4(12 X 40 4- 32 X 80 + 5-^ X 163) 4 2(2^ x 50 + 4^ x 136) + G- X 141] bi-quad. fiftieths; which divided by (50)\ or…
