RCC MCQs Practice Set-1

1. Minimum thickness of load bearing RCC wall should be:

2. In working stress method, the stresses used for design purpose are

3. Flexure collapse in over reinforced beam is due to

4. Modular ratio for M30 grade of concrete is

5. If the permissible stress in steel is 500 MPa, then working stress in bending compression would be taken as

6. What is the minimum number of longitudinal bars provided in reinforced concrete column of
circular cross-section?

7. According to IS 456, the slenderness ratio for a short column should not exceed

8. A singly reinforced balanced section designed by limit state method will have
1. Lesser depth compared to designed by working stress method
2. Higher value of steel compared to designed by working stress method
3. Lower cost compared to designed by working stress method

Which of these statements is/are correct?

9. As per the provision of IS: 456-2000, in the limit state method for design of beams, the limiting value of the depth of neutral axis in a reinforced concrete beam of effective depth `d’ is given as

10. The span to depth ratio limit is specified in IS: 456-2000 for the reinforced concrete beam, in order to ensure that the

11. Consider the following statements. In an under-reinforced concrete beam,

1) Actual depth of neutral axis is less than the critical depth of neutral axis

2) Concrete reaches ultimate stress prior to steel reaching the ultimate stress

3) Moment of resistance is less than that of balanced sections.

4) Lever arm of resisting couple is less than of balanced section

Which of these statements is/are correct?

12. What is the adoptable maximum spacing between vertical stirrups in a RCC beam of a rectangular crosssection having an effective depth of 300 mm

13. What is the modular ratio to be used in the analysis of RC beam using working stress method if the grade of concrete is M 20?

14. Which one of the following statements about the percentage of tensile steel required to produce a balanced reinforced concrete section is correct? The required percentage of steel

15. In case of 2-way slab, the limiting deflection of the slab is

16. In doubly reinforced rectangular beam, the allowable stress in compression steel is

17. In the reinforced concrete slab, the spacing between main reinforcement should not exceed

18. What shall be the maximum area of reinforcement (i) in compression and (ii) in tension to be provided in an RC beam, respectively, as per IS: 456?

19. The side face reinforcement, if required, in a T-beam will be

20. The maximum percentage of moment redistribution allowed in RCC beams is

21. Ratio of permissible shear stress in limit state method of design and working stress method of design is

22. In working stress method, to calculate working stress we use

23. The working stress method of design of RC members is known as

24. For reinforcing bars in compression the average bond stress can be increased by

25. In the case of deformed bars, the value of bond stress for various grades of concrete is greater by________________than the plain bars.

26. The shape of a column should be

27. In four-way system of arranging the reinforcement, the reinforcement is provided in

28. Which admixture is used to improve workability?

29. The workability of concrete is defined as the

30. For M20 grade of concrete and Fe415 steel, the development length in tension is K times the bar diameter where K is given by [ use LSM, τbd = 1.2 MPa ]

31. In a slab the transverse reinforcement is provided at an angle of______________ to the span of the slab.

32. The purpose of transverse of reinforcement in a slab is to

33. The analysis of slab spanning of one dimension is done by assuming it to be a beam of

34. For M15 grade concrete, shear reinforcement is necessary, if shear stress is more than

35. For M15 grade concrete, the section is to be redesigned if shear stress is more than

36. For bridge slabs, the amount of transverse reinforcement is taken as

37. For simply supported slabs spanning in one direction, the ratio of span to overall depth should not exceed

38. A reinforced concrete slab is 75 mm thick. The maximum size of reinforcement bar that can be used is

39. The shrinkage in a concrete slab

40. The diameter of bars for main reinforcement in slabs, may vary from

41. If the sides of a slab simply supported on its edges and spanning in two ways are equal, then the maximum bending moment is multiplied by

42. A reinforced slab, built monolithically with the supporting columns and is reinforced in two or more directions, without any provision of beams, is called a