6.3-6 The composite beam shown in the figure is simply supported and carries a total uniform load of 40 kN/m on a span length of 4.0 m. The beam is built of a southern pine wood member having cross-sectional dimensions of 150 mm × 250 mm and two brass plates of cross-sectional dimensions 30 mm × 150 mm. (a) Determine the maximum stresses og and o, in the brass and wood, respectively, if the moduli of elasticity are Eg = 96 GPa and E = 14 GPa. (Disregard the weight of the beam.) (b) Find the required thickness of the brass plates so that the plate and wood reach their allowable stress values of oB = 70 MPa and Oaw = 8.5 MPa simultaneously under the maxi- mum moment. What is the maximum moment? 40 kN/m 30 mm 250 mm 4.0 m 30 mm 150 mm PROBLEM 6.3-6

6.3-6 The composite beam shown in the figure is simply supported and carries a total uniform load of 40 kN/m on a span length of 4.0 m. The beam is built of a southern pine wood member having cross-sectional dimensions of 150 mm × 250 mm and two brass plates of cross-sectional dimensions 30 mm × 150 mm. (a) Determine the maximum stresses og and o, in the brass and wood, respectively, if the moduli of elasticity are Eg = 96 GPa and E = 14 GPa. (Disregard the weight of the beam.) (b) Find the required thickness of the brass plates so that the plate and wood reach their allowable stress values of oB = 70 MPa and Oaw = 8.5 MPa simultaneously under the maxi- mum moment. What is the maximum moment? 40 kN/m 30 mm 250 mm 4.0 m 30 mm 150 mm PROBLEM 6.3-6

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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