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RCC Structures Design MCQ

1.In a combined footing if shear stress exceeds 5 kg/cm², the nominal stirrups provided are

  • A6 legged
  • B8 legged
  • C10 legged
  • D12 legged
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Correct Answer : (D)

12 legged
Explanation:

2.If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a

  • ASimply supported beam
  • BContinuous beam
  • CCantilever beam
  • DNone of these
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Correct Answer : (C)

Cantilever beam
Explanation:

3.With usual notations the depth of the neutral axis of a balanced section, is given by

  • Amc/t = (d - n)/n
  • Bt/mc = (d - n)/n
  • Ct/mc = (d + n)/n
  • Dmc/t = n/(d - n)
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Correct Answer : (D)

mc/t = n/(d - n)
Explanation:

4.For a number of columns constructed in a rcjw, the type of foundation provided, is

  • AFooting
  • BRaft
  • CStrap
  • DStrip
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Correct Answer : (D)

Strip
Explanation:

5.In a cantilever retaining wall without a heel slab

  • AThickness of the stem is kept same throughout
  • BBase slab is made 10 cm thicker than the stem
  • CWidth of the base slab is kept 0.7 time the total height of the wall
  • DAll the above
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Correct Answer : (D)

All the above
Explanation:

6.On an absolutely rigid foundation base, the pressure will

  • ABe more at the edges of the foundation
  • BBe uniform
  • CNot be uniform
  • DBe zero at the centre of the foundation
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Correct Answer : (C)

Not be uniform
Explanation:

7.If the depth of actual neutral axis of a doubly reinforced beam

  • AIs greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
  • BIs less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
  • CIs equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously
  • DAll the above
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Correct Answer : (D)

All the above
Explanation:

8.In a singly reinforced beam

  • ACompression is borne entirely by concrete
  • BSteel possesses initial stresses when embedded in concrete
  • CPlane sections transverse to the centre line of the beam before bending remain plane after bending
  • DElastic moduli for concrete and steel have different values within the limits of deformation of the beam
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Correct Answer : (C)

Plane sections transverse to the centre line of the beam before bending remain plane after bending
Explanation:

9.Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to

  • AShear force
  • BArea of the section
  • CDistance of the C.G. of the area from its neutral axis
  • DMoment of the beam section about its neutral axis
Answer / Hint Save Question
Correct Answer : (D)

Moment of the beam section about its neutral axis
Explanation:

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