Steel Structures MCQs Quiz Multiple Choice Questions & Answers

1. 10 corrugation A.C. sheets have width of

1. 1240 mm
2. 600 mm
3. 810 mm
4. 1020 mm

2. 8 corrugation A.C. sheets are having width of

1. 1000 mm
2. 500 mm
3. 660 mm
4. 810 mm

3. A channel section has

1. two webs and two flanges
2. two webs one flange
3. one web two flanges
4. one web one flange

4. According to tension field method as web begins to buckle

1. all the above statements are correct
2. horizontal component of diagonal compression in web due to shear is resisted by flange
3. vertical component of diagonal compression in web due to shear is resisted by vertical stiffener
4. web resists only diagonal tension

5. Actual dimension of turned/finished bolts is

1. diameter of bolt hole
2. nominal diameter –1.2 to 1.3 mm
3. nominal diameter
4. nominal diameter +1.2 to 1.3 mm

6. Characteristic actions are those which do not exceed................percent probability.

1. 15%
2. 5%
3. 10%
4. 12%

7. Column splice plates may be assumed to act as columns with slenderness ratio

1. 120
2. zero
3. 40
4. 80

8. Effective depth of intermediate battens shall not be less than.................of the distance between the centroid of main members.

1. 8-Jul
2. 2-Jan
3. 3-Feb
4. 4-Mar

9. For 4 to 5 m spacing of trusses purling used are

1. I-sections
2. angles with outstanding leg at top
3. angles with outstanding leg at bottom
4. channel sections

10. For compression members most preferable I-section is

1. heavy beam
2. light beam
3. junior beam
4. medium beam

11. For connecting 10 to 20 mm plates minimum size of fillet weld is

1. 10 mm
2. 5 mm
3. 6 mm
4. 8 mm

12. For connecting circular tubes in tension, the best connection is by

1. welding
2. riveting
3. bolting
4. using HSFG bolts

13. For HSFG bolts, partial safety factor designed at service load and at ultimate load are respectively

1. 1.25 and 1.5
2. 1.10 and 1.25
3. 1.2 and 1.4
4. 1.25 and 1.4

14. For spacing of trusses 3 to 4 m, purling used are

1. I-sections
2. angle iron with outstanding leg at top
3. angle iron with outstanding leg at bottom
4. channel sections

15. For welded and double laced joints, effective length of lacing is............times the actua1 1ength.

1. 0.85
2. 0.5
3. 0.6
4. 0.7

16. From the consideration of tearing of section strength of an unequal angle section in tension is...............when short leg is connected compared to when its long leg is connected.

1. may be any one of above depending upon the ratio of length of the legs
2. more
3. less
4. equal

17. Gantry girders are designed to resist

1. lateral and longitudinal loads
2. vertical load from cranes
3. longitudinal and vertical loads
4. lateral, longitudinal and vertical loads

18. HSFG bolts transfer load mainly due to

1. none of the above
2. friction
3. shearing
4. bearing

19. If 6 mm A.C. sheets are used for roofing, maximum spacing is

1. 2.0 m
2. 1.4 m
3. 1.6 m
4. 1.8 m

20. If 7 mm thick A.C. sheets are used maximum spacing of J bolts is

1. 2.0 m
2. 1.4 m
3. 1.6 m
4. 1.8 m

21. If a fillet weld is to the square edge, the size of weld shall be at least...............less than the edge thickness

1. 3.0 mm
2. 1.5 mm
3. 2.0 mm
4. 2.5 mm

22. If a plate with small hole is kept over another plate and the entire hole is filled with weld material, the weled joint is known as

1. slot weld
2. fillet weld
3. butt weld
4. plug weld

23. If fillet weld is to the rounded toe of thickness t, a rolled steel section, the size of weld generally not to exceed

1. 3/4 t
2. t – 1.5 mm
3. t – 2.0 mm
4. 4/5 t

24. If intermittent butt welding is used, the space between two welds should not be more than..............times the thickness of the thinner member connected.

1. 24
2. 12
3. 16
4. 20

25. If p is the pitch, d is nominal diameter and d¢ bolt hole diameter, minimum pitch is

1. 2.5d¢
2. 3d
3. 3d¢
4. 2.5d

26. If packing plate thickness tpk exceeds 6 mm the shear capacity is to be reduced by a factor

1. 1 – 0.01 t_pk
2. 1 – 0.25 t_pk
3. 1 – 0.100 t_pk
4. 1 – 0.0125 t_pk

27. If span of a roof truss is between 15–30 m, preferable spacing is

1. 10–12 m
2. 3.0 to 4.5 m
3. 4.5 to 6.0 m
4. 6 to 8 m

28. If span of truss is 40 m and above, preferable spacing of trusses is

1. 12–15 m
2. 4.5 to 6 m
3. 6 to 8 m
4. 8 to 10 m

29. If t is the thickness of thinner member and p is the pitch in bolted connection of a compression member, pitch shall not be more than

1. 12t or 180 mm whichever is less
2. 16t or 200 mm whichever is less
3. 16t or 200 mm whichever is more
4. 12t or 200 mm whichever is less

30. If t is the thickness of thinner plate in a bolted connection of tension member, pitch shall not be more than the

1. 12t or 150 mm whichever is more
2. 16t or 200 mm whichever is less
3. 16t or 200 mm whichever is more
4. 12t or 150 mm whichever is less

31. If t is the thickness of thinner plate jointed by intermittent weld, minimum spacing recommended in tension and compression joints are respectively

1. 20 t and 16 t
2. 12 t and 16 t
3. 16 t and 12 t
4. 16 t and 20 t

32. In a beam if the elements of cross sections buckle locally even before reaching yield stress, it belongs to

1. slender section
2. plastic section
3. compact section
4. semi-compact section

33. In a column splice, if ends are milled, the connection and splice plates may be designed for only..............percent of axial load.

1. 80
2. 50
3. 60
4. 70

34. In a compression member of a truss, consisting of double angle, tacking bolts should be provided at a distance not more than

1. 1200 mm
2. 600 mm
3. 800 mm
4. 1000 mm

35. In a plate girder of depth d, if one horizontal stiffener is to be provided, it should be at...............below compression flange.

1. 0.5 d
2. 0.2 d
3. 0.25 d
4. 0.3 d

36. In a plate girder, if two horizontal stiffeners are to be used they should be at depth...........from compression flange.

1. 0.4 d and 0.8 d
2. 0.2 d and 0.4 d
3. 0.2 d and 0.5 d
4. 0.33 d and 0.67 d

37. In a roof truss a member normally acting as tension member but occasionally subjected to compression due to wind load, slenderness ratio should not exceed

1. 450
2. 150
3. 250
4. 350

38. In A.C. sheet roofing side lap should be at least

1. more than 2 corrugations
2. 1 corrugation
3. 1.5 corrugation
4. 2 corrugation

39. In A.C. sheet roofing, if slope is less than 20°, end lap should be at least

1. 200 mm
2. 125 mm
3. 150 mm
4. 175 mm

40. In A.C. sheet roofing, if slope is more than 20°, end lap should be at least

1. 175 mm
2. 100 mm
3. 125 mm
4. 150 mm

41. In case of bolted lacing, the width of lacing bars shall be.............times the nominal diameter of the bolt.

1. 6
2. 2
3. 3
4. 4

42. In case of planed edges, minimum edge distance shall not be less than................times bolt hole diameter.

1. 2
2. 1.25
3. 1.5
4. 1.75

43. In designing connection between web plate and flange plate, shear stress is calculated using moment of inertia of

1. one flange plate only
2. web plate only
3. web plate and flange plates
4. half the web plate and a flange plate

44. In designing gantry girders impact factor for horizontal force along rails is taken as

1. 25%
2. 5%
3. 10%
4. 15%

45. In double angle tension member of a truss tacking bolts are provided at a distance not exceeding

1. 1200 mm
2. 600 mm
3. 800 mm
4. 1000 mm

46. In lap joints with welding, lap should not be less than

1. 100 mm
2. 4 × t or 40 mm
3. 5 t or 50 mm
4. 6 t or 60 mm

47. In roof trusses bracings should be provided at bottom chord level in the

1. last but one panel using angles
2. end panels using flats
3. end panels using angles
4. last but one panel using flats

48. In roof trusses bracings should be provided at top chord level in the

1. last but one end panel using angles
2. end panels using flats
3. end panels using angles
4. last but one panel using flats

49. In showing welded connection the length of the weld shown should be

1. effective length + 4 × size of weld
2. effective length only
3. effective length + size of weld
4. effective length + 2 × size of weld

50. In the design of a connection of tension member to a gusset plate, the principle to be followed is

1. all the above
2. section should be compact
3. as large portion of it as is possible is connected
4. centre of gravity of member should be through the middle of thickness of gusset plate