Civil Engineering - RCC Structures Design

6. 

Piles are usually driven by

A. diesel operated hammer
B. drop hammer
C. single acting steam hammer
D. all the above.

Answer: Option D

Explanation:

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7. 

In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength

A. 100 kg/cm2
B. 200 kg/cm2
C. 300 kg/cm2
D. 400 kg/cm2
E. 500 kg/cm2

Answer: Option D

Explanation:

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8. 

The angle of internal friction of soil mass is the angle whose

A. tangent is equal to the rate of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on the plane
B. sine is equal to the ratio of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on the plane
C. cosine is equal to the ratio of the maximum resistance sliding on any internal inclined plane to the normal pressure acting on the plane
D. none of these.

Answer: Option A

Explanation:

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9. 

The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is

A. 30°
B. 40°
C. 45°
D. 60°
E. all the above.

Answer: Option E

Explanation:

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10. 

Top bars are extended to the projecting parts of the combined footing of two columns L distance apart for a distance of

A. 0.1 L from the outer edge of column
B. 0.1 L from the centre edge of column
C. half the distance of projection
D. one-fourth the distance of projection.

Answer: Option B

Explanation:

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