FAQ’s for Structural Design Jobs

/50

1 / 50

1. Lug angles

1. are used to reduce the length of connection.

2. are unequal angles.

3. increases shear lag.

4. all the above

2 / 50

2. The minimum thickness of a steel plate, which is directly exposed to weather and is not accessible for cleaning and repainting, should be:

1. 4.5 mm

2. 6 mm

3. 8 mm

4. 10 mm

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. 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 moment-curvature relation at a plastic hinge is

1. linear

2. parabolic

3. constant moment for all curvatures

4. constant curvature for all moments

7 / 50

7. 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

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. 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

10 / 50

10. Bearing stiffener in a plate girder is used to

1. transfer the load from the top flange to the bottom one

2. prevent buckling of web

3. decrease the effective depth of web

4. prevent excessive deflection

11 / 50

11. Shear buckling of web in a plate girder is prevented by using

1. vertical intermediate stiffener

2. horizontal stiffener at neutral axis

3. bearing stiffener

4. none of the above

12 / 50

12. The slenderness ratio of lacing bars should not exceed

1. 100

2. 120

3. 145

4. 180

13 / 50

13. The maximum slenderness ratio of a compression member carrying both dead and superimposed load is

1. 180

2. 200

3. 250

4. 350

14 / 50

14. According to IS Specifications, the effective length of a column effectively held in position at both ends and restrained in direction at one end is taken as

1. 0.67 L

2. 0.8 L

3. L

4. 1.5 L

15 / 50

15. According to IS Specifications, the maximum pitch of rivets in compression is (where t is thickness of thinnest outside plate or angle)

1. lesser of 200 mm and 12 t

2. lesser of 200 mm and 161

3. lesser of 300 mm and 32 t

4. lesser of 3 00 mm and 24 t

16 / 50

16. 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

17 / 50

17. Bolts are most suitable to carry

1. shear

2. bending

3. axial tension

4. shear and bending

18 / 50

18. 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

19 / 50

19. If the thickness of plate to be connected by a rivet is 16mm, then suitable size of rivet as per Unwin’s formula will be

1. 16 mm

2. 20 mm

3. 24 mm

4. 27 mm

20 / 50

20. When the axis of load lies in the plane of rivet group, then the rivets are subjected to

1. only shear stresses

2. only tensile stresses

3. both (a)and (b)

4. none of the above

21 / 50

21. When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which

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

22 / 50

22. 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

23 / 50

23. 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

24 / 50

24. 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

25 / 50

25. 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

26 / 50

26. The steel generally used in R.C.C. work, is

1. Stainless steel

2. TOR Steel

3. Mild steel3

4. High tension steel

27 / 50

27. In a pre-stressed member, it is advisable to use

1. Low strength concrete only

2. High strength concrete only

3. Low strength concrete but high tensile steel

4. High strength concrete and high tensile steel

28 / 50

28. 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

29 / 50

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

1. Displacements

2. Force

3. Displacements and forces

4. None of the above

30 / 50

30. 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

31 / 50

31. The maximum bending moment due to a train of wheel loads on a simply supported girder

1. Always occurs at center of span

2. Always occurs under a wheel load

3. Never occurs under a wheel load

4. None of the above

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. 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

34 / 50

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

1. Slope

2. Curvature

3. Deflection

4. Bending moment

35 / 50

35. The three moments equation is applicable only when

1. The beam is prismatic

2. There is no settlement of supports

3. There is no discontinuity such a hinges within the span

4. The spans are equal

36 / 50

36. If the size of panel in a flat slab is 6m x 6m, then as per Indian standard code, the widths of column strip and middle strip are

1. 3.0 m and 1.5 m

2. 1.5 m and 3.0 m

3. 3.0 m and 3.0 m

4. 1.5 m and 1.5 m

37 / 50

37. 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

38 / 50

38. The maximum deflection due to a load W at the free end of a cantilever of length L and having flexural rigidity EI, is?

1. WL2/2EI

2. wL2/3EI

3. wL3/2EI

4. wL3/3EI

39 / 50

39. 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

40 / 50

40. A cantilever of length is subjected to a bending moment at its free end If EI is the rigidity of the section, the deflection of the free end, is?

1. ML/EI

2. ML/2EI

3. ML2/2EI

4. ML2/3EI

41 / 50

41. Which of the below is a disadvantage of frame structure?

1. Ease of construction

2. Economy

3. Speed of construction

4. Large Span lengths

42 / 50

42. 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

43 / 50

43. The sway bracing is designed to transfer

1. 2Vi % of the top panel wind load to bottom bracing

2. 10% of the top panel wind load to bottom bracing

3. 25% of the top panel wind load to bottom bracing

4. 50% of the top panel wind load to bottom bracing

44 / 50

44. 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

45 / 50

45. The relation between intensity of wind pressure p and velocity of wind V is taken as

1. pa V

2. paV2

3. p a (1/V)

4. paV”2

46 / 50

46. For the buildings having a low permeability, the internal wind pressure acting normal to the wall and roof surfaces is taken as (where p is basic wind pressure)

1. zero

2. ±0.2p

3. ± 0.5 p

4. ±0.7p

47 / 50

47. 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

48 / 50

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

1. 26°/2°

2. 30°

3. 35°

4. 40°

49 / 50

49. 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)

50 / 50

50. 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

Your score is

© 2023 Civil Jobs Training, All rights reserved