An R.C.C. column is treated as long if its slenderness ratio is greater than____________?

Related Mcqs:

1. An R.C.C. column is treated as short column if its slenderness ratio is less than_______________?

   A. 30
   B. 35
   C. 40
   D. 50

2. If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is_______________?

   A. 40
   B. 45
   C. 50
   D. 55

3. Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than____________?

   A. 42 diameters from the centre of the column
   B. 42 diameters from the inner edge of the column
   C. 42 diameters from the outer edge of the column
   D. 24 diameters from the centre of the column

4. A column is regarded as long column if the ratio of its effective length and lateral dimension, exceeds_________________?

   A. 10
   B. 15
   C. 20
   D. 25

5. If the length of a combined footing for two columns l metres apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where is the distance of centre of gravity of column loads______________?

   A. y = L – (l – ) )
   B. y = L/2 + (l –
   C. y = L/2 – (l + )
   D. y = L/2 – (l – )

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______________?

   A. cAc + m cAsc
   B. c(A – Asc) + m cAsc
   C. c[A + (m – 1)ASC]
   D. All the above

7. A short column 20 cm × 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2, the Safe load on the column, should not exceed_______________?

   A. 4120 kg
   B. 41,200 kg
   C. 412,000 kg
   D. None of these

8. For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed________________?

   A. 10
   B. 15
   C. 20
   D. 25

9. Thickened part of a flat slab over its supporting column, is technically known as_____________?

   A. Drop panel
   B. Column head
   C. Top of the column
   D. None of these

10. If the modular ratio is , steel ratio is and overall depth of a beam is , the depth of the critical neutral axis of the beam, is___________________?

    A. [m/(m – r)] d
    B. [m/(m + r)] d
    C. [(m + r)/ m] d
    D. [(r – m)/m] d