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Home Civil Engineering RCC Structures Design Comments

  • Question
  • 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


  • Options
  • A. 37 cm
  • B. 38 cm
  • C. 39 cm
  • D. 40 cm

  • Correct Answer
  • 40 cm 


  • RCC Structures Design problems


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    • 1. If the maximum bending moment of a simply supported slab is M Kg.cm, the effective depth of the slab is (where Q is M.R. factor)

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
    • Discuss
    • 2. If H is the overall height of a retaining wall retaining a surcharge, the width of the base slab usually provided, is

    • Options
    • A. 0.3 H
    • B. 0.4 H
    • C. 0.5 H
    • D. 0.6 H
    • E. 0.7 H
    • Discuss
    • 3. If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond length is given by

    • Options
    • A.
    • B.
    • C.
    • D.
    • Discuss
    • 4. The diameter of transverse reinforcement of columns should be equal to one-fourth of the diameter of the main steel rods but not less than

    • Options
    • A. 4 mm
    • B. 5 mm
    • C. 6 mm
    • D. 7 mm
    • E. 8 mm
    • Discuss
    • 5. The toe projection of foundation slabs is taken

    • Options
    • A. as one third of the base
    • B. as one sixth of overall height of the wall
    • C. equal to heel slab
    • D. below ground surface.
    • Discuss
    • 6. A pre-stressed concrete member

    • Options
    • A. is made of concrete
    • B. is made of reinforced concrete
    • C. is stressed after casting
    • D. possesses internal stresses.
    • Discuss
    • 7. In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called

    • Options
    • A. under-reinforced section
    • B. over reinforced section
    • C. economic section
    • D. critical section.
    • Discuss
    • 8. In a combined footing if shear stress does not exceed 5 kg/cm2, the nominal stirrups provided are

    • Options
    • A. 6 legged
    • B. 8 legged
    • C. 10 legged
    • D. 12 legged
    • E. none of these.
    • Discuss
    • 9. An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is

    • Options
    • A. safe in shear
    • B. is safe with stirrups
    • C. is safe with stirrups and inclined members
    • D. needs revision of the section.
    • Discuss
    • 10. Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than

    • Options
    • A. one diameter of thinner bar
    • B. one diameter of thicker bar
    • C. sum of the diameters of ihinner and thicker bars
    • D. twice the diameter of thinner bar
    • E. none of these.
    • Discuss


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