5. For the shear resistance of the beams without web reinforcements, which one is true? ( ) A. Diagonal compression failure >Shear compression failure>Diagonal tension failure B. Shear compression failure >Diagonal compression failure>Diagonal tension failure C. Diagonal tension failure >Diagonal compression failure>Shear compression failure D. Diagonal tension failure=Diagonal compression failure=Shear compression failure 6. In a RC member under axial tension, which one is false? A. The strain in reinforcement is much different from that in concrete. B. If the reinforcements are too small, the steel bars will yield as soon as the concrete is cracked. C. The reinforcements should be placed symmetrically over the cross section. D. The tension is taken by reinforcements and concrete before concrete is cracked. 7. The design axial tension for a RC member of side b=200 mm is N =180KN. If the concrete is of grade C30 (fi = 1.43 N/mm?) and the steel is of grade HRB 335 (fy = 300 N/mm²), then the %3D required area of reinforcements should be ). A. 600 mm? B. 80 mm? C. 143 mm² D. 410 mm² 8. To enhance the shear capacity of a RC beam, we can ( A. Increase the stirrup spacing B. Decrease the stirrup spacing C. Reduce the cross section D. Decrease the concrete strength

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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From Question 5 to 10
5. For the shear resistance of the beams without web reinforcements, which one is true? ( )
A. Diagonal compression failure >Shear compression failure>Diagonal tension failure
B. Shear compression failure >Diagonal compression failure>Diagonal tension failure
C. Diagonal tension failure >Diagonal compression failure>Shear compression failure
D. Diagonal tension failure=Diagonal compression failure=Shear compression failure
6. In a RC member under axial tension, which one is false?
A. The strain in reinforcement is much different from that in concrete.
B. If the reinforcements are too small, the steel bars will yield as soon as the concrete is cracked.
C. The reinforcements should be placed symmetrically over the cross section.
D. The tension is taken by reinforcements and concrete before concrete is cracked.
7. The design axial tension for a RC member of side b=200 mm is N =180KN. If the concrete is
of grade C30 (fi = 1.43 N/mm²) and the steel is of grade HRB 335 (fy = 300 N/mm²), then the
required area of reinforcements should be (
).
A. 600 mm²
B. 80 mm²
C. 143 mm²
D. 410 mm²
8. To enhance the shear capacity of a RC beam, we can (
A. Increase the stirrup spacing
B. Decrease the stirrup spacing
C. Reduce the cross section
D. Decrease the concrete strength
9. To prevent the diagonal compression failure of RC beams, which requirement should be
satisfied?
A. V >0.7B,f,bho
B. V > 0.25ß.f.bh,
C. V <0.7Bf,bho
D. V < 0.25ß,f.bh,
10. A reinforced concrete column has a square section of b=h=300mm. The effective length lo=
5.4m. The concrete grade is of C30 and the reinforcement is of HRB 335. The reinforcement is
8 2 20. The ultimate strength under axial compression is
(Data: C30 concrete, fe = 14.3 N/mm² HRB 335, f'y= 300 N/mm² )
A. 2040 kN
B. 1836 kN
C. 1200 kN
D. 1487 kN
Transcribed Image Text:5. For the shear resistance of the beams without web reinforcements, which one is true? ( ) A. Diagonal compression failure >Shear compression failure>Diagonal tension failure B. Shear compression failure >Diagonal compression failure>Diagonal tension failure C. Diagonal tension failure >Diagonal compression failure>Shear compression failure D. Diagonal tension failure=Diagonal compression failure=Shear compression failure 6. In a RC member under axial tension, which one is false? A. The strain in reinforcement is much different from that in concrete. B. If the reinforcements are too small, the steel bars will yield as soon as the concrete is cracked. C. The reinforcements should be placed symmetrically over the cross section. D. The tension is taken by reinforcements and concrete before concrete is cracked. 7. The design axial tension for a RC member of side b=200 mm is N =180KN. If the concrete is of grade C30 (fi = 1.43 N/mm²) and the steel is of grade HRB 335 (fy = 300 N/mm²), then the required area of reinforcements should be ( ). A. 600 mm² B. 80 mm² C. 143 mm² D. 410 mm² 8. To enhance the shear capacity of a RC beam, we can ( A. Increase the stirrup spacing B. Decrease the stirrup spacing C. Reduce the cross section D. Decrease the concrete strength 9. To prevent the diagonal compression failure of RC beams, which requirement should be satisfied? A. V >0.7B,f,bho B. V > 0.25ß.f.bh, C. V <0.7Bf,bho D. V < 0.25ß,f.bh, 10. A reinforced concrete column has a square section of b=h=300mm. The effective length lo= 5.4m. The concrete grade is of C30 and the reinforcement is of HRB 335. The reinforcement is 8 2 20. The ultimate strength under axial compression is (Data: C30 concrete, fe = 14.3 N/mm² HRB 335, f'y= 300 N/mm² ) A. 2040 kN B. 1836 kN C. 1200 kN D. 1487 kN
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