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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Textbook Question
Chapter 1, Problem 1.32QP
What are the differences between “modulus of resilience” and “toughness”? Explain graphically.
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A tensile force of 20 kN is applied to a specimen with a gage length of 50mm. It isthen noted that the distance between the gage marks became 50.122mm. a,) What isthe modulus of elasticity of the specimen if its diameter is 10mm? b.) What is the axialstress of the specimen? Solution must have Free Body Diagram/drawing.
Getting measurements from Figure 11.20, determine approximate values ofthe following items for plain concrete, concrete with 2% steel fibers, and concrete with 3% steel fibers:a. Modulus of elasticityb. Ultimate strengthc. Strain at failured. Toughness. Curves may be approximated with a series of straight lines.e. Comment on the effects of increasing the steel fiber content on items a, b,c, and d above.
Chapter 1 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Ch. 1 - State three examples of a static load application...Ch. 1 - A material has the stressstrain behavior shown in...Ch. 1 - A tensile load of 50.000 lb is applied to a metal...Ch. 1 - A tensile load of 190 kN is applied to a round...Ch. 1 - A cylinder with a 6.0 in. diameter and 12.0 in....Ch. 1 - A metal rod with 0.5 inch diameter is subjected to...Ch. 1 - A rectangular block of aluminum 30 mm 60 mm 90...Ch. 1 - A plastic cube with a 4 in. 4 in. 4 in. is...Ch. 1 - A material has a stressstrain relationship that...Ch. 1 - On a graph, show the stressstrain relationship...
Ch. 1 - The rectangular block shown in Figure P1.11 is...Ch. 1 - The rectangular metal block shown in Figure P1.11...Ch. 1 - A cylindrical rod with a length of 380 mm and a...Ch. 1 - A cylindrical rod with a radius of 0.3 in. and a...Ch. 1 - A cylindrical rod with a diameter of 15.24 mm and...Ch. 1 - The stressstrain relationship shown in Figure...Ch. 1 - A tension test performed on a metal specimen to...Ch. 1 - An alloy has a yield strength of 41 ksi, a tensile...Ch. 1 - Prob. 1.21QPCh. 1 - Figure P1.22 shows (i) elasticperfectly plastic...Ch. 1 - An elastoplastic material with strain hardening...Ch. 1 - A brace alloy rod having a cross sectional area of...Ch. 1 - A brass alloy rod having a cross sectional area of...Ch. 1 - A copper rod with a diameter of 19 mm, modulus of...Ch. 1 - A copper rod with a diameter of 0.5 in., modulus...Ch. 1 - Define the following material behavior and provide...Ch. 1 - An asphalt concrete cylindrical specimen with a...Ch. 1 - What are the differences between modulus of...Ch. 1 - Prob. 1.33QPCh. 1 - A metal rod having a diameter of 10 mm is...Ch. 1 - What is the factor of safety? On what basis is its...Ch. 1 - Prob. 1.36QPCh. 1 - Prob. 1.37QPCh. 1 - A steel rod, which is free to move, has a length...Ch. 1 - In Problem 1.38, if the rod is snugly fitted...Ch. 1 - A 4-m-long steel plate with a rectangular cross...Ch. 1 - Estimate the tensile strength required to prevent...Ch. 1 - Prob. 1.42QPCh. 1 - Briefly discuss the variability of construction...Ch. 1 - In order to evaluate the properties of a material,...Ch. 1 - A contractor claims that the mean compressive...Ch. 1 - A contractor claims that the mean compressive...Ch. 1 - Prob. 1.47QPCh. 1 - Prob. 1.48QPCh. 1 - Prob. 1.49QPCh. 1 - Briefly discuss the concept behind each of the...Ch. 1 - Referring to the dial gauge shown in Figure P1.51,...Ch. 1 - Repeat Problem 1.51 using the dial gauge shown in...Ch. 1 - Measurements should be reported to the nearest...Ch. 1 - During calibration of an LVDT, the data shown in...Ch. 1 - During calibration of an LVDT, the data shown in...
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- The frame of a space shuttle type vehicle must have a high yield strength and high stillness, and the most important design factor is weight. Of all the materials presented in this chapter, what material might be the most suitable for the frame of a space shuttle? Assume that there will be both tensile and compressive stresses. For a space shuttle, cost is not a limiting factor. (a) You can eliminate entire classes of materials from consideration with a brief statement about their unsuitability. (b) What material has the highest specific yield strength? Give the yield strength, specific gravity, specific yield strength, elastic modulus, and specific elastic modulus for this material. (c) What material has the highest specific elastic modulus? Give the yield strength, specific gravity, specific yield strength, elastic modulus, and specific elastic modulus for this material. (d) Compare the materials with the highest specific yield strength and highest specific elastic modulus for suitability in the space shuttle frame. (C) Discuss the suitability of the top-rated material for this design from the viewpoint of the ability to produce a frame.arrow_forwardDefine the Thomas (1968) Elastic Modulus from CPT ?arrow_forwardPROBLEM 3A tensile test is performed on a brass specimen 10mm in diameter using a gage length of 50mm. When the tensile load P reaches a value of 20kN, the distance between the gage marks has increased by 0.122 mm. What is the modulus of elasticity? Note: Please show complete solution with FBDarrow_forward
- Show complete process. A tensile load of 150 kN is applied to a round metal bar with a diameter of 16 mm and a gage length of 80 mm. Under this load the bar elastically deforms so that the gage length increases to 80.1192 mm and the diameter decreases to 15.89 mm. Determine the modulus of elasticity (in MPa) and Poisson’s ratio for this metal.arrow_forwardA tensile test was performed on a metal specimen with a diameter of 1⁄2 inch and a gage length (the length over which the elongation is measured) of 4 inches. The data were plotted on a load-displacement graph, P vs. ∆L. A best-fit line was drawn through the points, and the slope of the straight-line portion was calculated to be P y∆L 5 1392 kips yin. What is the modulus of elasticity?arrow_forwardWhich strain and stress profiles shown in the figure below best represent a reinforced concrete section subjected to flexure at the ultimate limit state?arrow_forward
- A metal specimen with 20 mm diameter and 100 mm gauge length is loadedelastically with 5 kN and elongates 0.8 mm. Its diameter under this load is 19.95 mm. Calculate:a) the Bulk Modulus, Kb) the Shear Modulus, Garrow_forwardA steel bar, whose ultimate tensile strength is 150,000 psi is subjected to fluctuating tension-compression axial fatigue load that varies from a maximum of 75,000lb tension and 25,000lb compression. What is the minimum bar diameter to prevent fatigue failure?arrow_forwardComment on the following items: a. Why is the material “viscoelastic”? What is meant by this term? b. If more than one material is tested, how did the creep deformation of the different beams differ? Which ones demonstrated the most and least strains? c. Understanding the relationship between instantaneous and delayed elastic response, how does the strain behave at prolonged periods? What do you think would happen after the load is removed?arrow_forward
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