Materials for Civil and Construction Engineers (4th Edition)
Materials for Civil and Construction Engineers (4th Edition)
4th Edition
ISBN: 9780134320533
Author: Michael S. Mamlouk, John P. Zaniewski
Publisher: PEARSON
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Chapter 10, Problem 10.17QP
To determine

The modulus of elasticity of the wood pieces using SI and English units and compares the value to the typical values of Table (1.1).

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A wood specimen was prepared with actual dimensions of 25 mm * 25 mm *150 mm and grain parallel to its length. Displacement was measured over a100 mm gauge length. The specimen was subjected to compression parallel to the grain to failure. The load–deformation results are as shown in Table P10.24. a. Using a computer spreadsheet program, plot the stress–strain relationship.b. Calculate the modulus of elasticity.c. What is the failure stress?
A wood beam reinforced by an aluminum channel section is shown in the figure. 150 mm 230 mm 38 mm 6.5 mm -163 mm- The beam has a cross section of dimensions 150 mm x 230 mm, and the channel has a uniform thickness of 6.5 mm. If the allowable stresses in the wood and aluminum are 8 MPa and 50 MPa, respectively, and if their moduli of elasticity are in the ratio 1 to 6, what is the maximum allowable bending moment for the beam? Enter the magnitude in kN · m. (Assume that the component parts of the beam are securely bonded by adhesives or connected by fasteners. Also, be sure to use the transformed-section method in the solution.) (No Response) 14.06 kN· m
A wood beam reinforced by an aluminum channel section is shown in the figure. 150 mm 232 mm 38 mm 6.5 mm 163 mm- The beam has a cross section of dimensions 150 mm x 232 mm, and the channel has a uniform thickness of 6.5 mm. If the allowable stresses in the wood and aluminum are 8 MPa and 46 MPa, respectively, and if their moduli of elasticity are in the ratio 1 to 6, what is the maximum allowable bending moment for the beam? Enter the magnitude in kN • m. (Assume that the component parts of the beam are securely bonded by adhesives or connected by fasteners. Also, be sure to use the transformed-section method in the solution.) kN m
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