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  • Question

  • After prestressing process is completed, a loss of stress is due to


  • Options
  • A. shrinkage of concrete
  • B. elastic shortening of concrete
  • C. creep of concrete
  • D. creep of steel
  • E. all the above.

  • Correct Answer
  • all the above. 

    • RCC Structures Design problems

    Search Results

    • 1. An R.C.C. column is treated as short column if its slenderness ratio is less than

    • Options
    • A. 30
    • B. 35
    • C. 40
    • D. 50
    • E. 60
      • Discuss
    • 2. In a slab, the pitch of the main reinforcement should not exceed its effective depth

    • Options
    • A. three times
    • B. four times
    • C. five times
    • D. two times.
      • Discuss
    • 3. The maximum ratio of span to depth of a slab simply supported and spanning in one direction, is

    • Options
    • A. 35
    • B. 25
    • C. 30
    • D. 20
    • E. 15
      • Discuss
    • 4. A pre-stressed concrete member is preferred because

    • Options
    • A. its dimensions are not decided from the diagonal tensile stress
    • B. large size of long beams carrying large shear force need not be adopted
    • C. removal of cracks in the members due to shrinkage
    • D. all the above.
      • Discuss
    • 5. If A is the sectional area of a prestressed rectangular beam provided with a tendon prestressed by a force P through its centroidal longitudinal axis, the compressive stress in concrete, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
      • Discuss
    • 6. 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

    • Options
    • A. ?cAc + m ?cAsc
    • B. ?c(A - Asc) + m ?cAsc
    • C. ?c[A + (m - 1)ASC]
    • D. all the above.
      • Discuss
    • 7. For a continuous floor slab supported on beams, the ratio of end span length and intermediate span length, is

    • Options
    • A. 0.6
    • B. 0.7
    • C. 0.8
    • D. 0.9
      • Discuss
    • 8. The ratio of the breadth to effective depth of a beam is kept

    • Options
    • A. 0.25
    • B. 0.50
    • C. 0.70
    • D. 0.75
    • E. none of these.
      • Discuss
    • 9. If the width of the foundation for two equal columns is restricted, the shape of the footing generally adopted, is

    • Options
    • A. square
    • B. rectangular
    • C. trapezoidal
    • D. triangular.
      • Discuss
    • 10. If p1 and P2 are effective lateral loadings at the bottom and top exerted by a level earth subjected to a superload on the vertical face of height h of a retaining wall, the horizontal pressure p per unit length of the wall, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss

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