civil engineering MCQs – Page 230

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 Review each marked answer and report any item that may be outdated or unclear.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
4581. The breadth of a ribbed slab containing two bars must be between______________?
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A. 6 cm to 7.5 cm

B. 10 cm to 12 cm

C. 8 cm to 10 cm

D. 12 cm to 15 cm

4582. For stairs spanning horizontally, the minimum waist provided is________________?
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A. 4 cm

B. 12 cm

C. 8 cm

D. 6 cm

4583. 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___________________?
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A. 17 cm2

B. 14 cm 2

C. 15 cm2

D. 16 cm2
4584. Design of R.C.C. simply supported beams carrying U.D.L. is based on the resultant B.M. at________________?
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A. Supports

B. Quarter span

C. Every section

D. Mid span
4585. For stairs spanning l metres longitudinally between supports at the bottom and top of a flight carrying a load w per unit horizontal area, the maximum bending moment per metre width, is_______________?
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A. wl/4

B. wl/12

C. wl/8

D. wl/16
4586. If the modular ratio is , steel ratio is and overall depth of a beam is , the depth of the critical neutral axis of the beam, is___________________?
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A. [m/(m + r)] d

B. [(r m)/m] d

C. [(m + r)/ m] d

D. [m/(m r)] d

4587. The shear reinforcement in R.C.C. is provided to resist__________________?
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A. Diagonal compression

B. Horizontal shear

C. Vertical shear

D. Diagonal tension
4588. Dimensions of a beam need be changed if the shear stress is more than_______________?
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A. 20 kg/cm2

B. 10 kg/cm2

C. 15 kg/cm2

D. 25 kg/cm2

4589. The maximum ratio of span to depth of a cantilever slab, is_______________?
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A. 8

B. 16

C. 12

D. 10

4590. For a circular slab carrying a uniformly distributed load, the ratio of the maximum negative to maximum positive radial moment, is___________________?
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A. 3

B. 1

C. 2

D. 5

4591. A column is regarded as long column if the ratio of its effective length and lateral dimension, exceeds_________________?
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A. 25

B. 10

C. 20

D. 15
4592. If the diameter of longitudinal bars of a square column is 16 mm, the diameter of lateral ties should not be less than____________________?
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A. 6 mm

B. 5 mm

C. 4 mm

D. 8 mm

4593. The advantage of a concrete pile over a timber pile, is_______________?
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A. No decay due to termites

4594. bending moment of a simply supported slab is M Kg.cm, the effective depth of the If the maximum slab is (where Q is M.R. factor)________________?
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A. M/100Q

B. M/ Q

C. M/Q)

D. (M/100Q)
4595. If the maximum dip of a parabolic tendon carrying tension P is h and the effective length of the pre-stressed beam is L, the upward uniform pressure will be________________?
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A. 8hp/ l

B. 8hl/p

C. 8hl/p

D. 8hp/l
4596. If the diameter of the main reinforcement in a slab is 16 mm, the concrete cover to main bars is_____________?
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A. 10 mm

B. 14 mm

C. 12 mm

D. 16 mm
4597. In a combined footing if shear stress exceeds 5 kg/cm2, the nominal stirrups provided are______________?
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A. 12 legged

B. 8 legged

C. 6 legged

D. 10 legged

4598. If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment____________________?
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A. WL/6

B. WL/2

C. WL/8

D. WL/4

4599. is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The maximum stress in the beam, subjected to a maximum bending moment , is_________________?
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A. f = (P/A) + (M/6Z)

B. f = (P/A) + (Z/M)

C. f = (A/P) + (M/Z)

D. f = (P/A) + (M/Z)
4600. Pick up the true statement from the following?
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A. In the absence of beams, it is easier to install piping

B. All the above

C. In the absence of beams, it is easier to paint

D. Plain ceiling provides the best property diffusing light