Structural Design Online Test – Paper 3

1. Poisson's ratio for concrete

2. If A is the fineness modulus of coarse aggregate, B of combined aggregates, and C of fine aggregates, then P the proportion of fine to combined aggregates, is given by

3. Segregation is responsible for

4. Strength of concrete increases with

5. If a beam fails in bond, then

6. As the size of the cube increases, the strength of the cube

7. A circular slab, when subjected to external loading, deforms to assume a shape of

8. In an over-reinforced concrete section, the failure starts at

9. In a rectangular R.C.C beam, the ratio of the maximum shear stress to average shear stress is

10. The anchorage value of the standard hook is taken as 16 times the diameter of the reinforcing bar if the angle of the bend is equal to

11. In R.C.C. works, the proportion of the mixture 1:1.5:3, the volume of the cement is in

12. The slenderness ratio of an RCC column is given by (Where, r=radius of gyration, l=effective length, B=width, D=diameter)

13. Spacing of longitudinal bars measured along the periphery of the column should not be more than (as per IS: 456-2000)

14. The anchorage value of a standard bend is

15. Weight of steel per cubic meter (m³)

16. In a column, the minimum cover provided at the end of reinforcement is

17. The compressive strength of concrete determined from a 150mm × 150mm cylinder as compared to that determined from a 150mm cube is

18. The minimum thickness of the cover at the end of a reinforcing bar should be twice the diameter of the bar, subjected to a minimum of

19. The factor of safety for steel as compared to concrete is

20. If the thickness of the slab is 100 mm then the maximum diameter of the bar placed in the slab should be

21. The minimum straight lap length in tension bars with hooks in an RCC beam is

22. An RCC element, 1 m deep and 0.5 m wide will require minimum reinforcement @ 1% of the gross sectional area, what will be the area of reinforcing bars?

23. The slope of weep hole is generally provided at (spacing- 1.5 to 3.0m)

24. The diameter of bars normally used in a column is

25. Two layers of tensile reinforcement bars are placed in a flexural member in such a way that the effective depth would be

26. A slender column is a

27. The ratio of ultimate strength to working stress is

28. Weep holes are provided in retaining and breast walls to

29. The maximum spacing of side-face reinforcement in a beam should be

30. Due to shrinkage stress, a simply supported beam having reinforcement only at the bottom tends to

31. The lap length of a direct tension reinforcement bar in an RCC beam should be more than

32. Dimensions of a beam need to be changed if the shear stress is more than

33. A reinforced concrete beam will crack if tensile stress set up in the concrete below the neutral axis is

34. In a singly reinforced beam, the effective depth is measured from its compression edge to

35. Buckling occurs in a column

36. The initial and final setting times for ordinary Portland cement are approximately related by (where T & t are the final and initial setting times)

37. The enlarged head of a supporting column of a flat slab is technically known as

38. The strength of concrete is directly proportional to

39. The ratio of effective length of a column which is fixed at both ends to the distance between the supports is about

40. A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall depth is

41. By over-reinforcing a beam, the moment of resistance can be increased not more than

42. In a singly reinforced beam

43. Shear stress diagram of a homogeneous beam is

44. Spacing of stirrups in a rectangular beam is

45. In the case of the foundation of rigid base, the distribution pressure on the soil is

46. In case of RCC building, the expansion joint is normally provided if the length of the building exceeds

47. Placing of concrete should preferably be done at a temperature of

48. The minimum amount of steel required in RCC column (230x350) is

49. The minimum vertical spacing of the main bars in an RCC beam should be

50. The maximum ratio of span to depth ratio of a slab simply supported and spanning in two directions is