The elasticity and resistance of the materials of engineering (1883)
Burr, William H. (William Hubert), 1851-1934 · New York, J. Wiley & sons · leaf 445
sent any axistaken through the centre of thecolumn. The moments of iner-tia of the rectangles bl aboutaxes through their centres ofgravity and parallel to CD willbe very small indeed comparedwith the moment of inertia ofthe whole section. The mo-ment of inertia of any oneof these rectangles,… … 4 r,-\ j sin^ + ( ^2 H I ^os a ••• ^ = ^ + ^^^ V + 2. (43) The moment of inertia is thus seen to be the same aboutall axes, a result of the general principle established in the firstpart of this Article. The area of the cross section is: Art. 49.] TRUE EYE SECTION. 425 A = n{r^ - r/) + ^bl. (43^)…
Strength of materials · Building materials
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