The elasticity and resistance of the materials of engineering (1883)
Burr, William H. (William Hubert), 1851-1934 · New York, J. Wiley & sons · leaf 443
s the value: J ^ bd^ - {b - f) (d - 2ty12 I « D Fig.lO . • . (33) {Radius of gyratiorif = r^ = — , Star Section. Fig. II shows this section with the different dimensions. The area of cross section is: II >1 I 1 F- + -f -i— A = bt -\- bt - tt . . . (34) -5 *i I The moment of inertia about FB is:… … In Fig. 12 ^ = M.The moment of inertia aboutFB\s\ /-Y^; . . (37) and about CD : / = 12 (38) / /i^ b^{Radius of gyrationf = r^ =z — = — or — jrL 12 12 If the rectangular section is square, b = h. Hollow Rectangular Sections, The area of the section shown in Fig. 13 is: ^4 r= bh — b/t.The moment of…
Strength of materials · Building materials
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