# Civil Engineering - GATE Exam Questions

### Exercise :: GATE Exam Questions - Section 3

41.

The total active thrust on a vertical wall 3m high retaining a horizontal sand backfill (unit weight γt = 20 kN/m3, angle of shearing resistance φ' = 30°) when the water table is at the bottom of the wall, will be:

 A. 30 kN/m B. 35 kN/m C. 4 kN/m D. 45 kN/m

Explanation:

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42.

Reaction at support b of the structure is

 A. P B. P2 C. D.

Explanation:

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43.

In cohesive soils the depth of tension crack (Zcr) is likely to be

 A. B. C. D.

Explanation:

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44.

A vertical rod PQ of length L is fixed at its top end P and has a flange fixed to the bottom end Q. A weight W is dropped vertically from a height h(< L) on to the flange. The axial stress in the rod can be reduced by

 A. increasing the length of the rod B. decreasing the length of the rod C. decreasing the area of cross-section of the rod D. increasing the modulus of elasticity of the material

Explanation:

No answer description available for this question. Let us discuss.

45.

Compaction by vibratory roller is the best method of compaction in case of

 A. moist silty sand B. well graded dry sand C. clay of medium compressibility D. silt of high compressibility