civil engineering MCQs – Page 234

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 Review each marked answer and report any item that may be outdated or unclear.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

4661. If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and c are the modular ratio and maximum stress in the configuration of concrete, the strength of column is______________?
0

A. cAc + m cAsc

B. All the above

C. c[A + (m 1)ASC]

D. c(A Asc) + m cAsc

4662. The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm 2 respectively. If m = 15, the depth of its neutral axis is_______________?
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A. 25 cm

B. 20 cm

C. 30 cm

D. 35 cm

4663. If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than________________?
0

A. WL/12 (L D/3)

B. WL/10 (L + 2D/3)

C. WL/12 (L 2D/3)

D. WL/10 (L 2D/3)

4664. The horizontal portion of a step in a stairs case, is known as_________________?
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A. Flight

B. Tread

C. Rise

D. Winder

4665. If permissible working stresses in steel and concrete are respectively 1400 kg/cm2 and 80 kg/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is______________?
0

A. 37 cm

4666. If the length of an intermediate span of a continuous slab is 5m, the length of the end span is kept_______________?
0

A. 3.5 m

B. 4.0 m

C. 4.5 m

D. 3.0 m

4667. If the ratio of long and short spans of a two way slab with corners held down is r, the actual reduction of B.M. is given by
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A. (5/6) (r/1 + r4) M

B. (5/6) (r/1 + r) M

C. (5/6) (r/1 + r) M

D. (5/6) (r/1 + r3) M

4668. A foundation rests on_______________?
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A. Base of the foundation

B. Sub-grade

C. Foundation soil

D. Both B. and C

4669. The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stresses simultaneously, is called_________________?
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A. Economic section

B. Critical section

C. All the above

D. Balanced section

4670. Pick up the correct statement from the following?
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A. Lateral reinforcement stops breaking away of concrete cover, due to buckling

B. All the above

C. Lateral reinforcement prevents the shearing of concrete on diagonal plane

D. Lateral reinforcement in R.C.C. columns is provided to prevent the longitudinal reinforcement from buckling

4671. A flat slab is supported_______________?
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A. On beams

B. On beams and columns

C. On columns

D. On columns monolithically built with slab

4672. A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n1. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is____________________?
0

A. n1 (1 n1/3) cbd

B. All the above

C. bn (fc/2) (d n/3)

D. Atft (d n/3)

4673. According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than______________?
0

A. 15 cm

B. 20 cm

C. 5 cm

D. 10 cm

4674. The width of the flange of a T-beam, which may be considered to act effectively with the rib depends upon____________________?
0

A. All the above

B. Breadth of the rib

C. Overall thickness of the rib

D. Centre to centre distance between T-beams

4675. If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is________________?
0

A. 200 cm

B. 100 cm

C. 300 cm

D. 150 cm

4676. The radius of a bar bend to form a hook, should not be less than_______________?
0

A. Four times the diameter

B. Thrice the diameter

C. Twice the diameter

D. Five times the diameter

4677. The maximum diameter of a bar used in a ribbed slab, is______________?
0

A. 12 mm

B. 20 mm

C. 6 mm

D. 22 mm

4678. effective depth and depth of the neutral axis respectively of a singly reinforced If d and n are the beam, the lever arm of the beam, is_________________?
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A. n

B. d

C. d n/3

D. d + n/3

4679. An R.C.C. column is treated as long if its slenderness ratio is greater than____________?
0

A. 35

B. 30

C. 40

D. 50

4680. According to the steel beam theory of doubly reinforced beams______________?
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A. Stress in tension steel equals the stress in compression steel

B. Tension is resisted by tension steel

C. Compression is resisted by compression steel

D. All the above

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