FAQ’s for Structural Design Jobs

/50

1 / 50

1. The allowable shear stress in the web of mild steel beams decreases with (where ‘h’ is height and t is thickness)

1. decrease in h/t ratio

2. increase in h/t ratio

3. decrease in thickness

4. increase in height

2 / 50

2. The connection of intermediate vertical stiffeners to the web, not subjected to external loads, shall be designed for a minimum shear force (kN/m) of (where, t = the web thickness in mm, h = the outstand of stiffener in mm)

1. 75 t2/h

2. 125 t3/h2

3. 125 t2/h

4. 175 t2/h

3 / 50

3. The shape factor of an isosceles triangle for bending about the axis parallel to the base is:

1. 1.5

2. 1.7

3. 2

4. 2.34

4 / 50

4. The mechanism 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

5 / 50

5. The moment-curvature relation at a plastic hinge is

1. linear

2. parabolic

3. constant moment for all curvatures

4. constant curvature for all moments

6 / 50

6. Shape factor is a property which depends

1. only on the ultimate stress of the material

2. only on the yield stress of the material

3. only on the geometry of the section

4. both on the yield stress and ultimate stress of material

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. compression force in two end posts The pin of a rocker bearing in a bridge is designed for

1. bearing and shear

2. bending and shear

3. bearing and bending

4. bearing, shear and bending

9 / 50

9. In case of timber structures, the simple bending formula M = fz may be applied for

1. rectangular beams up to 300 mm depth

2. all rectangular beams

3. solid circular beams only

4. all square cross-section beams

10 / 50

10. 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

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. 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

13 / 50

13. The effective length of a battened column is increased by

1. 0.05

2. 0.1

3. 0.15

4. 0.2

14 / 50

14. The use of tie plates in laced columns is

1. prohibited

2. not prohibited

3. permitted at start and end of lacing system only

4. permitted between two parts of the lacing

15 / 50

15. 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

16 / 50

16. The slenderness ratio of a column supported throughout its length by a masonry wall is

1. zero

2. 10

3. 100

4. infinity

17 / 50

17. When the bolts are subjected to reversal of stresses, the most suitable type of bolt is

1. black bolt

2. ordinary unfinished bolt

3. turned and fitted bolt

4. high strength bolt

18 / 50

18. Diameter of a bolt hole is usually taken as

1. gross diameter of bolt

2. nominal diameter + 1.5 mm

3. nominal diameter + 2.0 mm

4. nominal diameter of bolt

19 / 50

19. By providing sufficient edge distance, which of the following failures of riveted joint can be avoided?

1. tension failure of the plate

2. shear failure of the rivet

3. shear failure of the plate

4. crushing failure of the rivet

20 / 50

20. Bending compressive and tensile stresses respectively are calculated based on

1. net area and gross area

2. gross area and net area

3. net area in both cases

4. gross area in both cases

21 / 50

21. The heaviest I-section for same depth is

1. ISMB

2. ISLB

3. ISHB

4. ISWB

22 / 50

22. An under-reinforced section means

1. Steel is provided at the underside only

2. Steel provided is insufficient

3. Steel provided on one face only

4. Steel will yield first

23 / 50

23. The effective width of a column strip of a flat slab, is

1. One-fourth the width of the panel

2. Half the width of the panel

3. Radius of the column

4. Diameter of the column

24 / 50

24. 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

25 / 50

25. The width of the rib of a T-beam , is generally kept between

1. 1/7 to 1/3 of rib depth

2. 1/3 to 1/2 of rib depth

3. 1/2 to 3/4 of rib depth

4. 1/3 to 2/3 of rib depth

26 / 50

26. For the design of a simply supported T-beam the ratio of the effective span to the overall depth of the beam is limited to

1. 10

2. 15

3. 20

4. 25

27 / 50

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

1. 0.1

2. 0.15

3. 0.2

4. 0.25

28 / 50

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

1. 25

2. 30

3. 35

4. 40

29 / 50

29. 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

30 / 50

30. In the displacement method of structural analysis, the basic unknowns are

1. Displacements

2. Force

3. Displacements and forces

4. None of the above

31 / 50

31. 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

32 / 50

32. A single rolling load of 8 kN rolls alone a girder of 15 m span. the absolute maximum bending moment will be

1. 8 kN.m

2. 15 kN.m

3. 30 kN.m

4. 60 kN.m

33 / 50

33. Bending moment at any section in a conjugate beam gives in the actual beam

1. Slope

2. Curvature

3. Deflection

4. Bending moment

34 / 50

34. While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of

1. Zero length

2. Infinite length

3. Zero moment of inertia

4. None of the above

35 / 50

35. The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of ? (Where xu is the depth of natural axis at the limit state of collapse)

1. 0.367 xu

2. 0.416 xu

3. 0.446 xu

4. 0.573 xu

36 / 50

36. When shear stress exceeds the permissible limit in a slab, then it is reduced by

1. Increasing the depth

2. Providing shear reinforcement

3. Using high strength steel

4. Using thinner bars but more in number

37 / 50

37. 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

38 / 50

38. The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length l and of flexural rigidly EI, is?

1. wl3/3EI

2. w14/3EI

3. w14/8EI

4. w14/12EI

39 / 50

39. A simply supported beam carries varying load from zero at one end and W at the other end. If the length of the beam is a, the maximum bending moment will be?

1. wa/27

2. wa2/27

3. w2a

4. wa2

40 / 50

40. Shell structure does not have any?

1. Bending moment

2. Shear stress

3. Tensile stress

4. Compressive stress

41 / 50

41. In frame structure, what transfers the load to columns?

1. Foundation

2. Beams

3. Slabs

4. Roofs

42 / 50

42. For a simply supported beam of span 15m, the maximum effective depth to satisfy vertical deflection limit should be?

1. 600 mm

2. 750 mm

3. 900 mm

4. More than 1 m

43 / 50

43. One of the criteria for the effective width of flange of T-beam is bf =-+bw+6Df6 in above formula, lo signifies?

1. Effective span of T-beam

2. Distance between points of zero moments in the beam

3. Distance between points of maximum moments in the beam

4. Clear span of the T-beam

44 / 50

44. Generally, the purlins are placed at the panel points so as to avoid

1. axial force in rafter

2. shear force in rafter

3. deflection of rafter

4. bending moment in rafter

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. 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)

48 / 50

48. The maximum spacing of vertical stiffeners is (where d is the distance between flange angles)

1. 1.33 d

2. 1.25 d

3. 1.5 d

4. 1.75 d

49 / 50

49. 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)

50 / 50

50. Minimum pitch of the rivets shall not be less than where d is gross diameter of rivet

1. 1.5 d

2. 2.0 d

3. 2.5 d

4. 3.0 d

Your score is

© 2023 Civil Jobs Training, All rights reserved