Which of the following statements is true for design properties of non pre-stressed steel reinforcement as per NSCP 2015? *Can choose more than one. A. For non-prestressed bars and wires, fy shall be Es times steel strain for any value of strain. B. For tensile steel strains greater than that corresponding to fy, stress shall be Es times steel strain. C. For non-prestressed bars and wires, the stress beyond fy shall be Es times steel strain. D. For tensile steel strains greater than that corresponding to fy, stress shall be considered independent of strain and equal to fy.

Which of the following statements is true for design properties of non pre-stressed steel reinforcement as per NSCP 2015? *Can choose more than one. A. For non-prestressed bars and wires, fy shall be Es times steel strain for any value of strain. B. For tensile steel strains greater than that corresponding to fy, stress shall be Es times steel strain. C. For non-prestressed bars and wires, the stress beyond fy shall be Es times steel strain. D. For tensile steel strains greater than that corresponding to fy, stress shall be considered independent of strain and equal to fy.

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter12: Composite Materials

Section: Chapter Questions

Problem 12.7P: Estimate the transverse tensile strength of the concrete in Problem 12.6.

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Question 7 Which of the following statements is not true for design properties of non pre-stressed steel reinforcement as per NSCP 2015? A. For non-prestressed bars and wires, fy shall be Es times steel strain for any value of strain. B. For tensile steel strains less than that corresponding to fy, stress shall be Es times steel strain. c. Steel yield strain is yield strength divided by modulus of elasticity. O D. For tensile steel strains greater than that corresponding to fy, stress shall be considered independent of strain and equal to fy.
5) Which of the following statements is true for design properties of non pre-stressed steel reinforcement as per NSCP 2015? A. For non-prestressed bars and wires, fy shall be Es times steel strain for any value of strain. B. For tensile steel strains greater than that corresponding to fy, stress shall be Es times steel strain. C. For non-prestressed bars and wires, the stress beyond fy shall be Es times steel strain. D. For tensile steel strains greater than that corresponding to fy, stress shall be considered independent of strain and equal to fy.
The structural efficiency in managing bending, shear and for steel vs concrete
Sketch a sample stress-strain behavior of steel and identify different levels of strength.
estion 4 Which of the following statements is true for design properties of non pre-stressed steel reinforcement as per NSCP 2015? O A. For non-prestressed bars and wires, fy shall be Es times steel strain for any value of strain. O B. For tensile steel strains greater than that corresponding to fy, stress shall be Es times steel strain. O C. For non-prestressed bars and wires, the stress beyond fy shall be Es times steel strain. O D. For tensile steel strains greater than that corresponding to fy, stress shall be considered independent of strain and equal to fy.
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The stress-strain diagram of a reinforcement steel having a cross-sectional diameter of 12 mmdiameter and 100 mm gage length is determined after its tensile strength test as follows. Based on the stressstrain diagram determine the followings properties of the material (Poisson’s ratio of the material is 0.32) : d) Resiliencee) Shear modulusf) Bulk modulusg) Ductility as described bypercent change in length
USE NSCP 2015 as reference: B. Minimum/maximum value of steel strain(st) (from nscp2015). C. Minimum/maximum value of steel stress (fs), (derived from nscp2015).
The following data are from a research project. Determine the yield strength, ultimate strength, and ultimate elongation for the two steels shown in the plots. Identify the reinforcement grade for each assuming the chemistry met requirements of the ASTM A706 specification. Complete the table. Steel Yield Strength, ksi Ult. Strength, ksi Stress (ksi) 1 2 120 100- 80- Stress (ksi) 60- 40 20- 0+ 0.00 0.02 0.04 120 100 80 40- 20- 0.06 0.08 0.10 0.12 Strain 0+ 0.00 0.02 0.04 0.06 0.08 Total Elongation, % Steel 1 0.14 0.16 0.18 0.20 Steel 2 0.10 0.12 0.14 0.16 0.18 0.20 Strain ASTM A706 Grade
The composite bar, firmly attached to unyielding supports, is initially stress free. What maximum axial load P can be applied if the allowable stresses are 100 MPa for aluminum and 140 MPa for steel? Bronze Steel A = 1800 mm² A = 1125 mm? E = 83 GPa %3D E = 200 GPa %3D P -450 mm- 360 mm·
PROBLEM 6.56 50 mm A steel bar and an aluminum bar are bonded together as shown to form a composite beam. Knowing that the vertical shear in the beam is 18 kN and that the modulus of elasticity is 200 GPa for the steel and 73 GPa for the aluminum, determine (a) the average stress at the bonded surface, (b) the maximum stress Aluminum 25 mm Steel in the beam. 36 mm
The stress-strain diagram of reinforcement steel having a cross-sectional diameter of 12 mm diameter and 100 mm gage length is determined after its tensile strength test as follows. Based on the stress-strain diagram determine the followings properties of the material (Poisson’s ratio of the material is 0.32) a) Resilienceb) Shear modulusc) Bulk modulusd) Ductility as described by the percent change in length

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	A.	For non-prestressed bars and wires, fy shall be Es times steel strain for any value of strain.
	B.	For tensile steel strains greater than that corresponding to fy, stress shall be Es times steel strain.
	C.	For non-prestressed bars and wires, the stress beyond fy shall be Es times steel strain.
	D.	For tensile steel strains greater than that corresponding to fy, stress shall be considered independent of strain and equal to fy.