8.86 The area in Fig. a is an L152x102×12.7 Angle beam cross section. Its cross-sectional area is A = 3060 mm² and its m

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8 86 The Area In Fig A Is An L152x102 12 7 Angle Beam Cross Section Its Cross Sectional Area Is A 3060 Mm And Its M 1 (669.43 KiB) Viewed 24 times

8.86 The area in Fig. a is an L152x102×12.7 Angle beam cross section. Its cross-sectional area is A = 3060 mm² and its moments of inertia about the x and y axes are I = 7.24 × 106 mm4 = 2.61 x 106 mm. Suppose that four beams with L152x102x12.7 cross sections are riveted together to obtain a composite beam with the cross section shown in Fig. b. What are the moments of inertia about the x and y axes of the composite beam? and ly y 24.9 mm (a) 50.2 mm Problem 8.86 (b)