Question

(a) Explain why the transverse shear stress varies across the section of a beam? Why is it zero at the top and bottom of cross section? (b) An over-hanged beam ABC carries two concentrated loads of 50 kN with distances from the edges as shown in the Figure below. The beams are fabricated by gluing together three 160-mm by 80-mm pieces as shown. Determine (i) the maximum stress in the gluc (i) the maximum transverse shear stress on the cross section at 1.5 m from support A. 50 kN 50 kN Glue 2 m 80 mm 80 mm 80 mm - NA 2 m 160 mm

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