FAQ’s for Structural Design Jobs

/50

1 / 50

1. Pitch of tacking rivets, when double angles connected back-to-back and acting as tension members should not be more than

1. 500 mm

2. 600 mm

3. 1000 mm

4. 300 mm

2 / 50

2. A steel beam supporting loads from the floor slab as well as from wall is termed as

1. stringer beam

2. lintel beam

3. spandrel beam

4. header beam

3 / 50

3. For a compression member with double angle section, which of the following section will give larger value of minimum radius of gyration?

1. equal angles back-to-back

2. unequal legged angles with long legs back-to-back

3. unequal legged angles with short legs back-to-back

4. both b or c

4 / 50

4. Other conditions being same, the load factor in indeterminate structures is

1. equal to load factor in determinate structures

2. more than the load factor in determinate structures

3. less than the load factor in determinate structures

4. unpredictable

5 / 50

5. The statical method of plastic analysis satisfies

1. equilibrium and mechanism conditions

2. equilibrium and plastic moment conditions

3. mechanism and plastic moment conditions

4. equilibrium condition only

6 / 50

6. The elastic strain for steel is about

1. 1/12 of strain at the initiation of strain hardening and about1/120 of maxi-mum strain

2. 1/2 of strain at the initiation of strain hardening and about 1/12of maxi-mum strain

3. 1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain

4. 1/24 of strain at the initiation of strain hardening and about1/200 of maximum strain

7 / 50

7. The least dimension in case of a circular column of diameter D is taken as

1. 0.5 D

2. 0.68 D

3. 0.88 D

4. D

8 / 50

8. The centrifugal force due to curvature of track is assumed to act on the bridge at a height of

1. 1.23 m above the rail level

2. 1.50 m above the rail level

3. 1.83 m above the rail level

4. 2.13 m above the rail level

9 / 50

9. The number of seismic zones in which the country has been divided are

1. 3

2. 4

3. 5

4. 6

10 / 50

10. The risk coefficient k, depends on

1. mean probable design life of structures

2. basic wind speed

3. both a and b

4. none of the above

11 / 50

11. The internal pressure coefficient on walls for buildings with large permeability is taken as

1. ± 0.2

2. ±0.5

3. ± 0.7

4. ± 0.1

12 / 50

12. Rivets connecting flange angles to cover plates in a plate girder are subjected to

1. horizontal shear only

2. vertical load only

3. both a and b

4. none of the above

13 / 50

13. Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds 9where t is thickness of web)

1. 501 t

2. 851 t

3. 200 t

4. 2501 t

14 / 50

14. Minimum spacing of vertical stiffeners is limited to (where d is the distance between flange angles)

1. d/4

2. d/3

3. d/2

4. 2d/3

15 / 50

15. Bearing stiffeners are provided at i) the supports, ii) the mid span, iii) the point of application of concentrated loads. The correct answer is

1. only (i)

2. both (i) and (ii)

3. both (i) and (iii)

4. (i), (ii) and (iii)

16 / 50

16. The web crippling due to excessive bearing stress can be avoided by

1. increasing the web thickness

2. providing suitable stiffeners

3. increasing the length of the bearing plates

4. none of the above

17 / 50

17. Horizontal stiffener in a plate girder is provided to safe guard against

1. shear buckling of web plate

2. compression buckling of web plate

3. yielding

4. all of the above

18 / 50

18. Economical depth of a plate girder corresponds to

1. minimum weight

2. minimum depth

3. maximum weight

4. minimum thickness of web

19 / 50

19. Lacing bars in a steel column should be designed to resist

1. bending moment due to 2.5% of the column load

2. shear force due to 2.5% of the column load

3. 2.5% of the column load

4. both a and b

20 / 50

20. Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between

1. 10° to 30°

2. 30° to 40°

3. 40° to 70°

4. 90°

21 / 50

21. According to IS:800, in the Merchant Rankine formula the value of imperfection index (n) is

1. 1

2. 1.4

3. 1.8

4. 2

22 / 50

22. The best arrangement to provide unified behavior inbuilt up steel columns is by

1. lacing

2. battening

3. tie plates

4. perforated cover plates

23 / 50

23. If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be

1. 40mm

2. 60mm

3. 80mm

4. 100mm

24 / 50

24. The actual thickness of butt weld as compared to the thickness of plate is usually

1. more

2. less

3. equal

4. none of the above

25 / 50

25. For a standard 45° fillet, the ratio of size of fillet to throat thickness is

1. 0.042361111

2. 1 : V2

3. V2 : 1

4. 0.084027778

26 / 50

26. Efficiency of a riveted joint, having the minimum pitch as per IS: 800, is

1. 0.4

2. 0.5

3. 0.6

4. 0.7

27 / 50

27. The difference between gross diameter and nominaldia meter for the rivets up to 25 mm diameter is

1. 1.0 mm

2. 1.5 mm

3. 2.0 mm

4. 2.5 mm

28 / 50

28. The heaviest I-section for same depth is

1. ISMB

2. ISLB

3. ISHB

4. ISWB

29 / 50

29. The width of the flange of a T-beam should be less than

1. One-third of the effective span of the T-beam

2. Distance between the centres of T-beam

3. Breadth of the rib plus twelve times the thickness of the slab

4. Least of the above

30 / 50

30. As the percentage of steel increases

1. Depth of neutral axis decreases

2. Depth of neutral axis increases

3. Lever arm increases

4. Lever arm decreases

31 / 50

31. According to the steel beam theory of doubly reinforced beams

1. Tension is resisted by tension steel

2. Compression is resisted by compression steel

3. Stress in tension steel equals the stress in compression steel

4. All the above

32 / 50

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

1. 10

2. 15

3. 20

4. 25

33 / 50

33. The spacing of the main bars in a simply supported slab, should not exceed its effective depth by

1. Three times

2. Four times

3. Five times

4. Six times

34 / 50

34. In a simply supported slab, alternate bars are curtailed at

1. 1/4th of the span

2. 1/5th of the span

3. 1/6th of the span

4. 1/7th of the span

35 / 50

35. The nutral axis of a T-beam exists

1. Within the flange

2. At the bottom edge of the slab

3. Below the slab

4. All the above

36 / 50

36. The maximum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of

1. 10 mm

2. 15 mm

3. 20 mm

4. 25 mm

37 / 50

37. The width of the flange of a L-beam, should be less than

1. One-sixth of the effective span

2. Breadth of the rib + four times thickness of the slab

3. Breadth of the rib + half clear distance between ribs

4. Least of the above

38 / 50

38. Which of the following is not the displacement method?

1. Equilibrium method

2. Column analogy method

3. Moment distribution method

4. Kani’s method

39 / 50

39. When a uniformly distributed load, longer than the span of the girder, moves from left to right, then the maximum bending moment at mid section of span occurs when the uniformly distributed load occupies

1. Less than the left half span

2. whole of left half span

3. More than the left half span

4. Whole span

40 / 50

40. According to IS codes recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is

1. 0.43 d

2. 0.55 d

3. 0.68 d

4. 0.85 d

41 / 50

41. A lift of weight W is lifted by a rope with an acceleration f. if the area of cross-section of the rope is A, the stress in the rope is?

1. [W(1+f/G)]/A

2. (1-g/f)/A

3. [W(2+f/G)]/A

4. [W(2+g/f)]A

42 / 50

42. If a concrete column 200×200 mm in cross-section is reinforced with four steel bars of 1200 mm2 total cross-sectional area. Calculate the safe load for the column if permissible stress in concrete is 5 N/mm2 and Es is 15Ec?

1. 264 MN

2. 274 MN

3. 284 MN

4. 294 MN

43 / 50

43. For a continuous slab of 3m 3.5m size, the minimum overall depth of slab to satisfy vertical deflection limits is?

1. 50 mm

2. 75 mm

3. 100 mm

4. 120 mm

44 / 50

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

1. 4.5 m

2. 5 m

3. 3.5 m

4. 4 m

45 / 50

45. To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be

1. 1

2. 2

3. 3

4. 4

46 / 50

46. Normally, the angle of roof truss with asbestos sheets should not be less than

1. 26°/2°

2. 30°

3. 35°

4. 40°

47 / 50

47. Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds (where t is thickness of web)

1. 501

2. 851

3. 200 t

4. 2501

48 / 50

48. Battening is preferable when the( i) column carries axial load only, ii) space between the two main components is not very large, iii) column is eccentrically loaded The correct answer is)

1. only (i)

2. only (iii)

3. (i) and (ii)

4. (ii) and (iii)

49 / 50

49. When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which (where, Fa is the load shared by each rivet due to axial load and F mis the shearing load due to moment in any rivet.)

1. is at the maximum distance from CG of the rivet group

2. is at the minimum distance from CG of the rivet group

3. gives the maximum angle between the two forces Fa and Fm

4. gives the minimum angle between the two forces Fa and Fm

50 / 50

50. The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is

1. 1.0 mm

2. 1.5 mm

3. 2.0 mm

4. 2.5 mm

Your score is

© 2023 Civil Jobs Training, All rights reserved