Martin, Louis Adolphe, 1880- · New York, J.Wiley & Sons, Inc.: [etc. etc.] · leaf 141
this rod? Exercise 132. A column isbuilt up of two channels and anI-beam as shown in Fig. 59. Theproperties of the channels and I-beam are shown in Fig. 60; theseare taken from the handbook ofthe Carnegie Steel Company, (a) Compute the two prin-cipal moments of inertia of this section, (b) If the… … STRUTS AND COLUMNS 121 formulas have been devised. Of these may be men-tioned J. B. Johnsons parabolic formula* and Thomas H.Johnsons straight-line formulaf. 1 „ i re- \& * —2 Area-4.84 !n.»Ii = 15.2 in.<U =1.70 in.1 T c. of A. I -*l- .i____y__L. Area-6.25 m.a li =47.8 in.« -2 I2 =2.25 in,*…
Mechanics
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