Civil Engineering - RCC Structures Design

41. 

If the diameter of longitudinal bars of a square column is 16 mm, the diameter of lateral ties should not be less than

A. 4 mm
B. 5 mm
C. 6 mm
D. 8 mm
E. 10 mm

Answer: Option B

Explanation:

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42. 

If the depth of actual neutral axis of a doubly reinforced beam

A. is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
B. is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
C. is equal to the depth of critical neutral axis, the concrete and steel attain their maximum stresses simultanesouly
D. all the above.

Answer: Option D

Explanation:

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43. 

The length of the straight portion of a bar beyond the end of the hook, should be at least

A. twice the diameter
B. thrice the diameter
C. four times the diameter
D. five times the diameter
E. seven times the diameter.

Answer: Option E

Explanation:

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44. 

A simply supported beam , 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2, the area of steel required, is

A. 14 cm2
B. 15 cm2
C. 16 cm2
D. 17 cm2
E. 18 cm2

Answer: Option C

Explanation:

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45. 

If p1 is the vertical intensity of pressure at a depth h on a block of earth weighing w per unit volume and the angle of repose φ, the lateral intensity of pressure p2 is

A.
B.
C.
D.

Answer: Option B

Explanation:

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