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RCC Structures Design problems

  • 1. The maximum diameter of a bar used in a ribbed slab, is

  • Options
  • A. 12 mm
  • B. 6 mm
  • C. 20 mm
  • D. 22 mm
  • E. 24 mm
    • Discuss
  • 2. If bending moment is M, shear force is F effecive depth is d, lever arm is la area of reinforcement is As and sum of the circumferences of main reinforcement is 0, the bond stress based on working stress method, is

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 3. A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is

  • Options
  • A. 30
  • B. 35
  • C. 40
  • D. 45
  • E. 50
    • Discuss
  • 4. A T-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis

  • Options
  • A. remains within the flange
  • B. remains below the slab
  • C. coincides the geometrical centre of the beam
  • D. none of these.
    • Discuss
  • 5. The radius of a bar bend to form a hook, should not be less than

  • Options
  • A. twice the diameter
  • B. thrice the diameter
  • C. four times the diameter
  • D. five times the diameter
  • E. none of these.
    • Discuss
  • 6. The length of the straight portion of a bar beyond the end of the hook, should be at least

  • Options
  • A. twice the diameter
  • B. thrice the diameter
  • C. four times the diameter
  • D. five times the diameter
  • E. seven times the diameter.
    • Discuss
  • 7. The thickness of the topping of a ribbed slab, varies between

  • Options
  • A. 3 cm to 5 cm
  • B. 5 cm to 8 cm
  • C. 8 cm to 10 cm
  • D. 12 cm to 15 cm
  • E. 12 cm to 18 cm
    • Discuss
  • 8. With usual notations the depth of the neutral axis of a balanced section, is given by

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 9. In a singly reinforced beam, the effective depth is measured from its compression edge to

  • Options
  • A. tensile edge
  • B. tensile reinforcement
  • C. neutral axis of the beam
  • D. longitudinal central axis.
    • Discuss
  • 10. [A + (m - 1)ASC] known as equivalent concrete area of R.C.C. is given by

  • Options
  • A. modular ratio method
  • B. load factor method
  • C. ultimate load method
  • D. none of these.
    • Discuss

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