From question 1 to 4 Transcribed Image Text: 1. Regarding the concrete strength, wch is true? ( A. The smaller the

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cross section. D. Reducing the cross section. 4. For a beam without web reinforcements, it most likely to fail with ( ) when the shear span to depth ratio 1> 3. A. Shear-compression failure B. Diagonal compression failure C. Diagonal splitting failure D. Flexural failure

From question 1 to 4 Transcribed Image Text: 1. Regarding the concrete strength, wch is true? (
A. The smaller the cross section of specimens, the lower the concrete strength.
B. The compressive strength is near the tensile strength.
C. The gher loading rate, the gher concrete strength.
D. The smaller the water-to-cement ratio, the lower the concrete strength.
2. The failure mode of a under-reinforced beams is ( )
A.The concrete crushes before the steel bars yield.
B.Steel bars will not yield.
C. No cracks occur.
D.The steel bars yield before the concrete crushes.
3. If a beam fails to satisfy the condition < 5, , wch can be adopted to get a under-reinforced beam. ( A. Increasing the steel reinforcement. B. Reducing the concrete strength. C. Enlarging the cross section. D. Reducing the cross section. 4. For a beam without web reinforcements, it most likely to fail with ( ) when the shear span to depth ratio 1> 3.
A. Shear-compression failure
B. Diagonal compression failure
C. Diagonal splitting failure
D. Flexural failure

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