civil engineering Mcqs
4701. The width of the rib of a T-beam, is generally kept between_______________?
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A. 1/7 to 1/3 of rib depth

B. 1/2 to 3/4 of rib depth

C. 1/3 to 2/3 of rib depth

D. 1/3 to 1/2 of rib depth

4702. 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

4703. 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
4704. On piles, the drop must be at least_______________?
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A. 100 cm

B. 80 cm

C. 140 cm

D. 120 cm
4705. 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

4706. 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%

4707. 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

4708. 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
4709. 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

4710. 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

4711. 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
4712. Bulking of sand is maximum if moisture content is about____________?
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A. 10%

B. 4%

C. 2%

D. 6%

4713. 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

4714. 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

4715. 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

4716. 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

4717. 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
4718. 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

4719. 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

4720. 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
4721. 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

4722. According to IS : 456-1978, the cblumn or the strut is the member whose effective length is greater than________________?
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A. 4 times the least lateral dimension

B. the least lateral dimension

C. 2 times the least lateral dimension

D. 3 times the least lateral dimension
4723. Finer grinding of cement______________?
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A. affects only the early development of strength

B. affects only the ultimate strength

C. both (A. and (B.

D. does not affect the strength

4724. In a pile of length /, the points of suspension from ends for lifting it are located at______________?
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A. 0.207 1

B. 0.25 /

C. 0.333 /

D. 0.293 /

4725. The minimum diameter of longitudinal bars in a column is________________?
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A. 6 mm

B. 12 mm

C. 8 mm

D. 16 mm

4726. In reinforced concrete footing on soil, the minimum thickness at edge should not be less than______________?
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A. 150 mm

B. 250 mm

C. 200 mm

D. 100 mm

4727. When shear stress exceeds the permissible limit in a slab, then it is reduced by____________?
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A. using high strength steel

B. increasing the depth

C. using thinner bars but more in number

D. providing shear reinforcement

4728. Modulus of elasticity of steel as per IS : 456-1978 shall be taken as______________?
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A. 20 kN/cm2

B. 2xl06N/cm2

C. 200kN/mm2

D. 200 kN/cm2

4729. Workability of concrete is inversely proportional to______________?
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A. time of transit

B. vater-cement ratio

C. the air in the mix

D. size of aggregate

4730. For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than_______________?
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A. 40 mm

B. 15 mm

C. 25 mm

D. 30 mm

4731. The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on______________?
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A. top face perpendicular to wall

B. bottom face perpendicular to wall

C. both top and bottom faces perpendicular to wall

D. none of the above

4732. A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D. is less than__________________?
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A. 2.5

B. 3

C. 1.5

D. 2

4733. The percentage of voids in cement is approximately_______________?
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A. 60%

B. 40%

C. 25%

D. 80%

4734. The fineness modulus of fine aggregate is in the range of______________?
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A. 2.0 to 3.5

B. 3.5 to 5.0

C. 6.0 to 8.5

D. 5.0 to 7.0

4735. Ratio of permissible stress in direct compression and bending compression is______________?
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A. between 1.5 and 2.0

B. less than 1

C. greater than 2

D. between 1 and 1.5

4736. The main reason for providing number of reinforcing bars at a support in a simply supported beam is to resist in that zone_________________?
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A. bond stress

B. tensile stress

C. shear stress

D. compressive stress

4737. According to IS : 456-1978, the fiexural strength of concrete is________________?
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A. inversely proportional to compressive strength

B. inversely proportional to square root of compressive strength

C. directly proportional to square root of compressive strength

D. directly proportional to compressive strength

4738. A higher modular ratio shows____________?
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A. higher tensile strength of steel

B. lower compressive strength of concrete

C. lower tensile strength of steel

D. higher compressive strength of con-crete

4739. The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than________________?
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A. 0.3

B. 1

C. 0.15

D. 0.12
4740. Maximum percentage reinforcement in case of slabs is limited to___________________?
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A. 8

B. 2

C. 4

D. 6

4741. In order to obtain the best workability of concrete, the preferred shape of aggregate is_______________?
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A. rounded

B. all of the above

C. elongated

D. angular

4742. The property of the ingredients to separate from each other while placing the concrete is called____________?
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A. shrinkage

B. segregation

C. bulking

D. compaction

4743. Minimum thickness of load bearing RCC wall should be_____________?
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A. 100 mm

B. 50 mm

C. 150 mm

D. 200 mm

4744. The diameter of ties in a column should be_______________?
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A. more than or equal to 5 mm

B. more than or equal to one fourth of diameter of main bar

C. more than 5 mm but less than one-fourth of diameter of main bar

D. more than 5 mm and also more than one-fourth of diameter of main bar
4745. If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called________________?
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A. over-reinforced beam

B. balanced beam

C. none of the above

D. under-reinforced beam

4746. Air entrainment in the concrete increases________________?
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A. strength

B. the unit weight

C. workability

D. the effects of temperature variations

4747. In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by_______________?
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A. 10%

B. 40%

C. 30%

D. 20%

4748. To determine the modulus of rupture, the size of test specimen used is_______________?
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A. 100 x100 x700 mm

B. 150 x150 x700 mm

C. 100 x100 x500 mm

D. 150 x150 x500 mm

4749. 1% of voids in a concrete mix would reduce its strength by about______________?
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A. 20%

B. 5%

C. 15%

D. 10%

4750. For a reinforced concrete section, the shape of shear stress diagram is_______________?
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A. wholly rectangular

B. parabolic above neutral axis and rectangular below neutral axis

C. wholly parabolic

D. rectangular above neutral axis and parabolic below neutral axis