civil engineering MCQs – Page 28

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 Review each marked answer and report any item that may be outdated or unclear.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
541. In the plate loading test for determining the bearing capacity of soil, the size of square bearing plate should be_________________?
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A. greater than 1 m

B. less than 300 mm

C. between 750 mm and 1 m

D. between 300 mm and 750 mm
542. Lap length in compression shall not be less than______________?
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A. 24 (j)

B. 15 4>

C. 30 (j)

D. 20

543. In counterfort retaining walls, the main reinforcement in the stem at support is_______________?
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A. not provided

B. provided only on inner face

C. provided only on front face

D. provided both on inner and front faces

544. According to IS classification, the range of silt size particles is_________________?
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A. 0.425 mm to 0.075 mm

B. 4.75 mm to 2.00 mm

C. 0.075 mm to 0.002 mm

D. 2.00 mm to 0.425 mm

545. Modulus of elasticity of steel as per IS : 456-1978 shall be taken as______________?
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A. 2xl06N/cm2

B. 200 kN/cm2

C. 200kN/mm2

D. 20 kN/cm2

546. The design of heel slab of a retaining wall is based on the maximum bending moment due to______________?
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A. Weight of the soil above it

B. Its own weight

C. All the above

D. Load of the surcharge, if any

547. Columns may be made of plain concrete if their unsupported lengths do not exceed their least lateral dimension_______________?
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A. Three times

B. Two times

C. Five times

D. Four times
548. If the plasticity index of a soil mass is zero, the soil is______________?
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A. sand

B. clayey silt

C. silt

D. clay

549. Shear strength of a soil is a unique function of__________________?
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A. effective stress only

B. total stress only

C. both effective stress and total stress

D. none of the above

550. During the first stage of triaxial test when the cell pressure is increased from 0.10 N/mm2 to 0.26 N/mm2, the pore water pressure increases from 0.07 N/mm2 to 0.15 N/mm2. Skemptons pore pressure parameter B is___________________?
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A. 0.5

B. 2.0

C. -0.5

D. 2

551. Which of the following types of soil is transported by gravitational forces ?
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A. talus

B. dune sand

C. drift

D. loess

552. Stress strain curve of high tensile steel_______________?
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A. does not show definite yield point but yield point is defined by 0.2% proof stress

B. has a definite yield point

C. does not show definite yield point but yield point is defined by 2% proof stress

D. does not show definite yield point but yield point is defined by 0.1% proof stress

553. If nominal shear stress tv exceeds the design shear strength of concrete xc, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to__________________?
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A. xc

B. xv TC

C. Tv + Tc

D. xv

554. Inorganic soils with low compressibility are represented by_________________?
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A. SL

B. ML

C. CH

D. MH

555. Select the correct statement?
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A. High tensile steel is cheaper than mild steel

B. Carbon percentage in high carbon steel is less than that in mild steel

C. Elastic modulus of high tensile steel is nearly the same as that of mild steel

D. Elastic modulus of high tensile steel is more than that of mild steel

556. The load factors for live load and dead load are taken respectively as_________________?
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A. 2.2 and 2.2

B. 1.5 and 2.2

C. 1.5 and 1.5

D. 2.2 and 1.5
557. The major principal stress in an element of cohesionless soil within the backfill of a retaining wall is________________?
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A. vertical if the soil is in a passive state of plastic equilibrium

B. none of the above

C. vertical if the soil is in an active state of plastic equilibrium

D. inclined at 45 to the vertical plane

558. Clay layer A with single drainage and coefficient of consolidation Cv takes 6 months to achieve 50% consolidation. The time taken by clay layer B of the same thickness with double drainage and coefficient of consolidation Cv/2 to achieve the same degree of consolidation is_________________?
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A. 12 months

B. 24 months

C. 3 months

D. 6 months

559. The load stress of a section can be reduced by______________?
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A. Increasing the total perimeter of bars

B. Replacing larger bars by greater number of small bars

C. Replacing smaller bars by greater number of greater bars

D. Decreasing the lever arm

560. Dispersed type of soil structure is an arrangement comprising particles having______________?
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A. all of the above

B. edge to face orientation

C. face to face or parallel orientation

D. edge to edge orientation