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 10.21QP
a)
To determine
Draw the graph between load and deflection using spread sheet.
b)
To determine
Plot the proportional limit on the graph.
c)
To determine
The modulus of rupture of the wood lumber.
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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?
The grains of wood in the board make an angle of 20°
with the horizontal as shown. The board is subjected to
an axial load of P = 250 N . (Figure 1)
Part A
Determine the normal stress that acts perpendicular to the grains.
Express your answer to three significant figures and include the appropriate
units.
µA
Value
Units
Figure
1 of 1
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Part B
300 mm
Determine the shear stress that acts parallel to the grains.
60 mm
Express your answer to three significant figures and include the appropriate
units.
20°
25 mm
HẢ
?
Value
Units
P Pearson
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
Chapter 10 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Ch. 10 - What are the two main classes of wood? What is the...Ch. 10 - Prob. 10.2QPCh. 10 - Prob. 10.3QPCh. 10 - Discuss the anisotropic nature of wood. How does...Ch. 10 - Prob. 10.5QPCh. 10 - Prob. 10.6QPCh. 10 - Prob. 10.7QPCh. 10 - Prob. 10.8QPCh. 10 - Prob. 10.9QPCh. 10 - Prob. 10.10QP
Ch. 10 - Prob. 10.11QPCh. 10 - Prob. 10.12QPCh. 10 - Prob. 10.13QPCh. 10 - Prob. 10.14QPCh. 10 - Prob. 10.15QPCh. 10 - Prob. 10.16QPCh. 10 - Prob. 10.17QPCh. 10 - Prob. 10.18QPCh. 10 - Prob. 10.19QPCh. 10 - Prob. 10.20QPCh. 10 - Prob. 10.21QPCh. 10 - Prob. 10.22QPCh. 10 - Prob. 10.23QPCh. 10 - A wood specimen was prepared with actual...Ch. 10 - A pine wood specimen was prepared with actual...Ch. 10 - Prob. 10.26QPCh. 10 - Prob. 10.27QPCh. 10 - Prob. 10.28QPCh. 10 - Prob. 10.29QPCh. 10 - Prob. 10.30QPCh. 10 - Prob. 10.31QPCh. 10 - Prob. 10.32QPCh. 10 - Prob. 10.33QP
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- please check data question properly dont copy previous answers.arrow_forwardCalculate the modulus of elasticity of the wood specimen with the stress-strain relationship shown in figure below. 25 20 15 10 0.1 0.2 0.3 0.4 0.5 STRAIN (%) COMPRESSIVE STRESS PARALLEL TO GRAINS (MPA)arrow_forwardA 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 marrow_forward
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