A composite beam is fabricated by bolting two 3.9-in-wide by 8-in.-deep timber planks to the sides of a 0.4-in. by 8-in. steel plate. The moduli of elasticity of the timber and the steel are 1630 ksi and 30900 ksi, respectively. The simply supported beam spans a distance of 12 ft and carries two concentrated loads P, which are applied as shown. Assume LAB = LCD = 3 ft, LBC = 6 ft, b = 3.9 in., d = 8 in. and t = 0.4 in. (a) Determine the maximum bending stresses 0₁, 0, produced in the timber planks and the steel plate if P = 2 kips. (b) Assume that the allowable bending stresses of the timber and the steel are 1250 psi and 27900 psi, respectively. Determine the largest acceptable magnitude for concentrated loads P. (You may neglect the weight of the beam in your calculations.) LAB BO в LBC C LCD D

A composite beam is fabricated by bolting two 3.9-in-wide by 8-in.-deep timber planks to the sides of a 0.4-in. by 8-in. steel plate. The moduli of elasticity of the timber and the steel are 1630 ksi and 30900 ksi, respectively. The simply supported beam spans a distance of 12 ft and carries two concentrated loads P, which are applied as shown. Assume LAB = LCD = 3 ft, LBC = 6 ft, b = 3.9 in., d = 8 in. and t = 0.4 in. (a) Determine the maximum bending stresses 0₁, 0, produced in the timber planks and the steel plate if P = 2 kips. (b) Assume that the allowable bending stresses of the timber and the steel are 1250 psi and 27900 psi, respectively. Determine the largest acceptable magnitude for concentrated loads P. (You may neglect the weight of the beam in your calculations.) LAB BO в LBC C LCD D

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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1 Situation 19. A composite beam shown is subjected to a bending moment of 500 kN-m. Determine the maximum flexural stress; 300 VIEW INNOVATIONS 200 200 100 55. Experienced by the steel 56. Experienced by the aluminum A. 0.03 B. 25.24 57. Experienced by the brass A. 25.24 B. 37.86 REVIEW I EW INNOVATIONS Steel, E=200 GPa Aluminum, E=70 GPa Brass, E-105 GPa wwwww C. 48.2 D. 72.11 C. 16.8 C. 16.8 D. 11.21 VIEW INNOVATIONS REVIEW INNOVATIONS REVIEW IS
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