civil engineering MCQs – Page 237

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 Review each marked answer and report any item that may be outdated or unclear.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

4721. 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

4722. 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

4723. 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 /

4724. 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

4725. 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

4726. 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

4727. 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

4728. 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

4729. 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

4730. 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

4731. 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

4732. The percentage of voids in cement is approximately_______________?
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A. 60%

B. 40%

C. 25%

D. 80%

4733. 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

4734. 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

4735. 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

4736. 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

4737. 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

4738. 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

4739. Maximum percentage reinforcement in case of slabs is limited to___________________?
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A. 8

B. 2

C. 4

D. 6

4740. 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

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