civil engineering MCQs – Page 236

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs
4701. In a cantilever retaining wall without a heel slab______________?
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A. Thickness of the stem is kept same throughout

B. All the above

C. Width of the base slab is kept 0.7 time the total height of the wall

D. Base slab is made 10 cm thicker than the stem

4702. In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed________________?
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A. 20 mm

B. 10 mm

C. 15 mm

D. 25 mm
4703. On piles, the drop must be at least_______________?
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A. 100 cm

B. 80 cm

C. 140 cm

D. 120 cm
4704. The number of treads in a flight is equal to_______________?
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A. None of these

B. Risers plus one

C. Risers minus one

D. Risers in the flight

4705. By over-reinforcing a beam, the moment of resistance can be increased not more than________________?
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A. 25 %

B. 15%

C. 10%

D. 20%

4706. The effective width of a column strip of a flat slab, is_______________?
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A. Diameter of the column

B. Half the width of the panel

C. One-fourth the width of the panel

D. Radius of the column

4707. Distribution of shear intensity over a rectangular section of a beam, follows_________________?
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A. A circular curve

B. A straight line

C. An elliptical curve

D. A parabolic curve
4708. With usual notations the depth of the neutral axis of a balanced section, is given by______________?
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A. t/mc = (d + n)/n

B. mc/t = (d n)/n

C. mc/t = n/ (d n)

D. t/mc = (d n)/n

4709. For a continuous floor slab supported on beams, the ratio of end span length and intermediate span length, is____________________?
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A. 0.7

B. 0.8

C. 0.9

D. 0.6

4710. The diameter of main bars in R.C.C. columns, shall not be less than________________?
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A. 8 mm

B. 6 mm

C. 10 mm

D. 12 mm
4711. Bulking of sand is maximum if moisture content is about____________?
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A. 10%

B. 4%

C. 2%

D. 6%

4712. Which of the following R.C. retaining walls is suitable for heights beyond 6m ?
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A. counterfort type

B. all of the above

C. T-shaped wall

D. L-shaped wall

4713. Strength of concrete increases with________________?
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A. decrease in curing time

B. increase in fineness of cement

C. decrease in size of aggregate

D. increase in water-cement ratio

4714. Diagonal tension in a beam______________?
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A. decreases below the neutral axis and increases above the neutral axis

B. is maximum at neutral axis

C. increases below the neutral axis and decreases above the neutral axis

D. remains same

4715. Which of the following statements is incorrect ?
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A. Spacing of longitudinal bars measured along the periphery of column should not exceed 300 mm

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

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

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

4716. Due to circumferential action of the spiral in a spirally reinforced column________________?
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A. capacity of column is decreased

B. ductility of column reduces

C. capacity of column is decreased but ductility of column increases

D. both the capacity of column and ductility of column increase
4717. The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called________________?
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A. bleeding

B. segregation

C. creep

D. bulking

4718. The compressive strength of 100 mm cube as compared to 150 mm cube is always_______________?
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A. more

B. none of the above

C. less

D. equal

4719. Maximum distance between expansion joints in structures as per IS : 456 1978 is________________?
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A. 60 m

B. 20 m

C. 30 m

D. 45 m
4720. The slab is designed as one way if the ratio of long span to short span is_____________?
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A. less than 1

B. between 1 and 1.5

C. greater than 2

D. between 1.5 and 2