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
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
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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