As per Whitney’s theory, the maximum moment of resistance of the balanced section of a beam of width b and effective depth d is given by_______________?

Related Mcqs:

1. According to Whitney’s theory, depth of stress block for a balanced section of a concrete beam is limited to_______________?

   A. 0.43 d
   B. 0.537 d
   C. 0.68 d
   D. 0.85 d

   where d is effective depth of beam[ES 2k]

2. According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is__________________?

   A. 0.43 d
   B. 0.55 d
   C. 0.68 d
   D. 0.85 d

3. 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

4. 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

5. According to Whitney’s theory, ultimate strain of concrete is assumed to be_____________?

   A. 0.03%
   B. 0.1%
   C. 0.3%
   D. 3%

6. 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

7. If the permissible stress in steel in tension is 140 N/mm2, then the depth of neutral axis for a singly reinforced rectangular balanced section will be___________________?

   A. 0.35 d
   B. 0.40 d
   C. 0.45 d
   D. dependent on grade of concrete also

8. If the depth of neutral axis for a singly reinforced rectangular section is represented by kd in working stress design, then the value of k for balanced section_______________?

   A. depends on as, only
   B. depends on aCbC only
   C. depends on both crst and acbc
   D. is independant of both ast and acbc where d is the effective depth, ast is per-missible stress in steel in tension and ocbc is permissible stress in concrete in bend¬ing compression

9. For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is______________?

   A. 3.5 m
   B. 4 m
   C. 4.5 m
   D. 5 m

10. The critical section for finding maximum bending moment for footing under masonry wall is located_______________?

    A. at the middle of the wall
    B. at the edge of the wall
    C. halfway between the middle and edge of the wall
    D. at a distance equal to effective depth of footing from the edge of the wall