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. 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

3 / 50

3. In case of plastic design, the calculated maximum shear capacity of a beam as per IS:800 shall be (where, Aw = effective cross-sectional area resisting shear fy = yield stress of the steel)

1. 0.55 Awfy

2. 0.65 Awfy

3. 0.75 Awfy

4. 0.85 Awfy

4 / 50

4. 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

5 / 50

5. In the virtual work method, the virtual quantity is

1. displacement

2. load

3. slope

4. moment

6 / 50

6. Load factor is

1. always equal to factor of safety

2. always less than factor of safety

3. always greater than factor of safety

4. sometimes greater than factor of safety

7 / 50

7. 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

8 / 50

8. In case of timber structures, the form factor for solid circular cross-section is taken as

1. 1.18

2. 1.414

3. 1.67

4. 1.81

9 / 50

9. 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

10 / 50

10. 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

11 / 50

11. 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

12 / 50

12. Hudson’s formula gives the dead weight of a truss bridge as a function of

1. bottom chord area

2. top chord area

3. effective span of bridge

4. heaviest axle load of engine

13 / 50

13. The allowable tensile stress in structural mild steel plates for steel tank is assumed as

1. 150.0 MPa on gross area

2. 95.0 MPa on net area

3. 105.5 MPa on net area

4. 105.5 MPa on gross area

14 / 50

14. The bracing between two columns of a steel tank will be designed to resist

1. horizontal shear due to wind or earthquake only

2. horizontal, shear due to wind or earthquake + 2.5% of column loads

3. column loads + 2.5% of horizontal shear due to wind or earthquake

4. column loads + full horizontal shear due to wind or earthquake

15 / 50

15. Minimum pitch provided in riveted steel tanks is (where d is diameter of rivets)

1. 1.5 d

2. 2.0 d

3. 2.5 d

4. 3.0 d

16 / 50

16. 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

17 / 50

17. The basic wind speed is specified at a height ‘h’ above mean ground level in an open terrain. The value of ‘h’ is

1. 10 m

2. 20 m

3. 25 m

4. 50 m

18 / 50

18. The forces acting on the web splice of a plate girder are

1. axial forces

2. shear and axial forces

3. shear and bending forces

4. axial and bending forces

19 / 50

19. Gantry girders are designed to resist

1. lateral loads

2. longitudinal loads and vertical loads

3. lateral, longitudinal and vertical loads

4. lateral and longitudinal loads

20 / 50

20. The slenderness ratio of lacing bars should not exceed

1. 100

2. 120

3. 145

4. 180

21 / 50

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

1. lacing

2. battening

3. tie plates

4. perforated cover plates

22 / 50

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

1. zero

2. 10

3. 100

4. infinity

23 / 50

23. 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

24 / 50

24. Select the correct statement

1. Material cost of a rivet is higher than that of a bolt.

2. Tensile strength of a bolt is lesser than that of a rivet.

3. Bolts are used as a temporary fastening whereas rivets are used as permanent fastenings.

4. Riveting is less noisy than bolting.

25 / 50

25. 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

26 / 50

26. In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate

1. fully by direct bearing

2. fully through fastenings

3. 50% by direct bearing and 50% through fastenings

4. 75% by direct bearing and 25% through fastenings

27 / 50

27. If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension will be taken as

1. 120 mm

2. 160 mm

3. 200 mm

4. 300 mm

28 / 50

28. 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

29 / 50

29. 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

30 / 50

30. 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

31 / 50

31. If the length of an intermediate span of a continuous slab is 5m, the length of the end span is kept

1. 4.5 m

2. 4.0 m

3. 3.5 m

4. 3.0 m

32 / 50

32. Enlarged head of a supporting column of a flat slab is technically known as

1. Supporting end of the column

2. Top of the column

3. Capital

4. Drop panel

33 / 50

33. 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

34 / 50

34. The minimum thickness of s flat slab is taken

1. L/32 for end panels without drops

2. L/36 for end panels without drops

3. L/36 for interior panels without drops

4. All the above

35 / 50

35. The maximum ratio of span to depth of a slab simply supported and spanning in one direction, is

1. 35

2. 25

3. 30

4. 20

36 / 50

36. Which of the following methods of structural analysis is a displacement method?

1. Moment distribution method

2. Column analogy method

3. Three moment equation

4. None of the above

37 / 50

37. Which of the following methods of structural analysis is a force method?

1. Slope deflection method

2. Column analogy method

3. Moment distribution method

4. None of the above

38 / 50

38. 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

39 / 50

39. For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust

1. Is increased

2. Is decreased

3. Remains unchanged

4. Becomes zero

40 / 50

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

1. Slope

2. Curvature

3. Deflection

4. Bending moment

41 / 50

41. A steel rod 1 meter long having square cross section is pulled under a tensile load of 8 tones the extension in the rod was 1 mm only. if E steel=2x106kg/cm2, the side of the rod, is

1. 1 cm

2. 1.5 cm

3. 2 cm

4. 2.5 cm

42 / 50

42. A truss containing j joints and m members, will be a simple truss if?

1. m = 2j – 3

2. j = 2m – 3

3. m = 3j – 2

4. j = 3m – 2

43 / 50

43. A rod of uniform cross-section A and length L force P. The young’s modules E of the material, is?

1. E=/A. L

2. E=/P. L

3. E=/P. L/A

4. E=/P. A

44 / 50

44. A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be?

1. 3-Feb

2. 2-Mar

3. 8-May

4. 5-Aug

45 / 50

45. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as

1. 0.65 kN/m2

2. 0.75 kN/m2

3. 1.35 kN/m2

4. 1.50 kN/m2

46 / 50

46. 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

47 / 50

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

1. 26°/2°

2. 30°

3. 35°

4. 40°

48 / 50

48. The maximum permissible span of asbestos cement sheets is

1. 650 mm

2. 810 mm

3. 1250 mm

4. 1680 mm

49 / 50

49. As per IS: 800, for compression flange, the out stand of flange plates should not exceed (where t = thickness of thinnest flange plate)

1. 121

2. 161

3. 201

4. 251

50 / 50

50. 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

Your score is

© 2023 Civil Jobs Training, All rights reserved