civil engineering MCQs – Page 228

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 Review each marked answer and report any item that may be outdated or unclear.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
4541. For M 150 grade concrete (1:2:4) the moment of resistance factor is_________________?
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A. 8.50

B. 5.8

C. 7.5

D. 0.87

4542. A very comfortable type of stairs is_______________?
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A. Dog legged

B. Straight

C. Open newel

D. Geometrical

4543. For a ribbed slab______________?
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A. Width of the rib shall not be less than 7.5 cm

B. Clear spacing between ribs shall not be greater than 4.5 cm

C. Overall depth of the slab shall not exceed four times the breadth of the rib

D. All the above
4544. In a pre-stressed member it is advisable to use________________?
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A. High strength concrete and high tensile steel

B. Low strength concrete but high tensile steel

C. High strength concrete only

D. Low strength concrete only

4545. Long and short spans of a two way slab are l and l and load on the slab acting on strips parallel to lx and ly be wx and wy respectively. Accordingy to xRankine Grashoff theory___________________?
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A. (wx/wy) = (ly/lx)

B. None of these

C. (wx/wy) = (ly/lx)4

D. (wx/wy) = (ly/lx)

4546. If the length of a combined footing for two columns l metres apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where is the distance of centre of gravity of column loads______________?
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A. y = L/2 (l + )

B. y = L/2 + (l

C. y = L (l ) )

D. y = L/2 (l )
4547. carrying a uniformly distributed load per metre length is suspended at two A pile of length points, the maximum, B.M. at the centre of the pile or at the points of suspension, is_________________?
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A. WL/16

B. WL/47

C. WL/8

D. WL/24

4548. The minimum head room over a stair must be_______________?
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A. 200 cm

4549. The Youngs modulus of elasticity of steel, is__________________?
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A. 250 KN/mm2

B. 150 KN/mm2

C. 275 KN/mm2

D. 200 KN/mm2

4550. the column head support a flat slab, is generally kept The diameter of_____________?
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A. 5.0 cm larger than the diameter of the column

B. 4.0 cm larger than the diameter of the column

C. 0.25 times the diameter of the column

D. 0.25 times the span length
4551. For initial estimate for a beam design, the width is assumed__________________?
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A. 1/15th of span

B. 1/25th of span

C. 1/20th of span

D. 1/30th of span
4552. If the shear stress in a R.C.C. beam is_______________?
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A. Equal or less than 5 kg/cm2, no shear reinforcement is provided

4553. The percentage of minimum reinforcement of the gross sectional area in slabs, is________________?
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A. 0.15 %

B. 0.10%

C. 0.18%

D. 0.12%

4554. If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is________________?
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A. WR/16

B. 3WR/16

C. Zero

D. 2WR/16

4555. If P kg/m2 is the upward pressure on the slab of a plain concrete footing whose projection on either side of the wall is a cm, the depth of foundation D is given by________________?
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A. D = 0.00775 aP

B. D = 0.07775 aP

C. D = 0.775 Pa

D. D = 0.0775 aP

4556. A raft foundation is provided if its area exceeds the plan area of the building by______________?
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A. 50 %

B. 40%

C. 20%

D. 10%

4557. The amount of reinforcement for main bars in a slab, is based upon___________________?
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A. Maximum bending moment

B. Minimum bending moment

C. Minimum shear force

D. Maximum shear force

4558. [A + (m 1)ASC] known as equivalent concrete area of R.C.C. is given by______________?
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A. Ultimate load method

B. Load factor method

C. None of these

D. Modular ratio method
4559. The ratio of the breadth to effective depth of a beam is kept_______________?
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A. 0.7

B. 0.75

C. 0.50

D. 0.25

4560. The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm2, safe shear stress 5 kg/cm2 and B.M. 24 mt________________?
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A. Is over safe in shear

B. Is safe in shear

C. Needs redesigning

D. Is unsafe in shear