Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to_____________?

Related Mcqs:

1. For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be________________?

   A. 600 mm
   B. 750 mm
   C. 900 mm
   D. more than 1 m

2. The main reason for providing number of reinforcing bars at a support in a simply supported beam is to resist in that zone_________________?

   A. compressive stress
   B. shear stress
   C. bond stress
   D. tensile stress

3. In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively_______________?

   A. compressive and tensile
   B. tensile and compressive
   C. both compressive
   D. both tensile

4. Half of the main steel in a simply supported slab is bent up near the support at a distance of x from the center of slab bearing where x is equal to________________?

   A. 1/3
   B. 1/5
   C. 1/7
   D. 1/10
   where 1 is the span

5. If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called________________?

   A. balanced beam
   B. under-reinforced beam
   C. over-reinforced beam
   D. none of the above

6. A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D. is less than__________________?

   A. 1.5
   B. 2.0
   C. 2.5
   D. 3.0

7. Approximate value of shrinkage strain in concrete, is________________?

   A. 0.003
   B. 0.0003
   C. 0.00003
   D. 0.03

8. Shrinkage of concrete depends upon_____________?

   1. humidity of atmosphere
   2. passage of time
   3. stress
   The correct answer is?

   A. (1) and (2)
   B. (2)and (3)
   C. only (3)
   D. All (1), (2)and (3)

9. The property of fresh concrete, in which the water in the mix tends to rise to the surface while placing and compacting, is called________________?

   A. segregation
   B. bleeding
   C. bulking
   D. creep

10. In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on_______________?

    1. bottom face near counterfort
    2. top face near counterfort
    3. bottom face near centre of span
    4. top face near centre of span The correct answer is
    A. only (1)
    B. only (2)
    C. both (1) and (4)
    D. both (2)and (3)