Design of Concrete Structures Mcqs

This set of Civil Engineering Multiple Choice Questions & Answers (MCQs) focuses on “ Design of Concrete Structures ”. These Mcqs are chosen from a collection of most authoritative and best reference books on Civil Engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Design of Concrete Structures comprehensively.

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31.
For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is______________?

3.5 m

4 m

4.5 m

5 m

32.
Diagonal tension in a beam______________?

Is maximum at neutral axis

Decreases below the neutral axis and increases above the neutral axis

Increases below the neutral axis and decreases above the neutral axis

Remains same

33.
According to IS : 456-1978, the cblumn or the strut is the member whose effective length is greater than________________?

The least lateral dimension

2 times the least lateral dimension

3 times the least lateral dimension

4 times the least lateral dimension

34.
For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be________________?

600 mm

750 mm

900 mm

More than 1 m

35.
According to IS : 456- 1978, minimum slenderness ratio for a short column is_______________?

Less than 12

Less than 18

Between 18 and 24

More than 24

36.
The minimum cover in a slab should neither be less than the diameter of bar nor less than_______________?

10 mm

15 mm

25 mm

13 mm

37.
The ratio of the diameter of reinforcing bars and the slab thickness is_______________?

1/4

1/5

1/6

1/8

38.
The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than________________?

0.15

0.12

0.30

1.00

39.
For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than_______________?

15 mm

25 mm

30 mm

40 mm

41.
According to IS : 456-1978, the fiexural strength of concrete is________________?

Directly proportional to compressive strength

Inversely proportional to compressive strength

Directly proportional to square root of compressive strength

Inversely proportional to square root of compressive strength

43.
Which of the following statements is incorrect ?

Minimum cross sectional area of longitudinal reinforcement in a column is 0.8%

Spacing of longitudinal bars measured along the periphery of column should not exceed 300 mm

Reinforcing bars in a column should not be less than 12 mm in diameter

The number of longitudinal bars provided in a circular column should not be less than four

44.
Minimum pitch of transverse reinforcement in a column is________________?

The least lateral dimension of the member

Sixteen times the smallest diameter of longitudinal reinforcement bar to be tied

Forty-eight times the diameter of transverse reinforcement

Lesser of the above three values

45.
A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D. is less than__________________?

1.5

2.0

2.5

3.0

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