Correct : C. bolts are used as a temporary fastening whereas rivets are used as permanent fastenings
2. The forces acting on the web splice of a plate girder are
Correct : C. shear and bending forces
3. Generally the purlins are placed at the panel points so as to avoid
Correct : D. bending moment in rafter
4. Which of the following sections should preferably be used at places where torsion occurs?
Correct : C. box type section
5. Other conditions being same, the load factor in indeterminate structures is
Correct : B. more than the load factor in determinate structures
6. Rivets connecting flange angles to cover plates in a plate girder are subjected to
Correct : A. horizontal shear only
7. The effective length of a fillet weld should not be less than
Correct : B. four times the weld size
8. 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
Correct : C. 50% by direct bearing and 50% through fastenings
9. If the floor is supported at or near the bottom but top chords of a bridge is not braced, then the
bridge is called
Correct : C. half through type
10. The elastic strain for steel is about
Correct : C. 1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain
11. In the virtual work method, the virtual quantity is
Correct : A. displacement
12. In moment resistant connections, the moment resistance of riveted connection depends upon
Correct : C. tension in rivets
13. The portal bracing in a truss bridge is used to
Correct : A. transfer load from top of end posts to bearings
14. The maximum permissible span of asbestos cement sheets is
Correct : D. 1680 mm
15. Lacing bars in a steel column should be designed to resist
Correct : B. shear force due to 2.5% of the column load
16. The moment of the couple set up in a section of a beam by the longitudinal compressive and
tensile force, is known as
Correct : B. moment of resistance
17. The thickness of the web of a mild steel plate girder is less than d/200. If only one horizontal
stiffener is used, it is placed at
Correct : C. 2/5th of the depth of the neutral axis from the compression flange
18. Shear buckling of web in a plate girder is prevented by using
Correct : A. vertical intermediate stiffener
19. The most commonly used sections in lateral system to carry shear force in built up columns, are
Correct : D. all the above
20. The stress in the wall of a thin cylinder subjected to internal pressure, is
Correct : D. hoop tension
21. The risk coefficient k, depends on
Correct : C. both (a) and (b)
22. For eccentrically loaded columns, the bending factor is
Correct : C. cross-sectional area of column/section modulus of the section
23. The net area of round bars to resist the tension, is the area of cross section at
Correct : B. root of the thread
24. The bracing between two columns of a steel tank will be designed to resist
Correct : B. horizontal, shear due to wind or earthquake + 2.5% of column loads
25. A column splice is used to increase
Correct : A. length of the column
26. The bracing provided in the plane of end posts is called
Correct : B. portal bracing
27. In a built up beam actual bending compressive stress fbc is given by (when y1 is the distance of the
edge of the beam from the neutral axis).
Correct : A. fbc = (m/ixx) × y
28. If the thickness of a structural member is small as compared to its length and width, it is classified
as
Correct : B. two dimensional
29. The statical method of plastic analysis satisfies
Correct : B. equilibrium and plastic moment conditions
30. Lug angle is
Correct : D. all the above
31. For the economical design of a combined footing to support two equal column loads, the
projections of beams in lower tier are kept such that bending moment under column is equal to
Correct : A. bending moment at the centre of the beam
32. Stiffeners are used in a plate girder
Correct : D. to avoid bulking of web plate
33. As compared to field rivets, the shop rivets are
Correct : A. stronger
34. A fillet weld whose axis is parallel to the direction of the applied load, is known as
Correct : C. side fillet weld
35. In a truss girder of a bridge, a diagonal consists of mild steel flat 4001.S.F. and carries a pull of 80
tonnes. If the gross-diameter of the rivet is 26 mm, the number of rivets required in the splice, is
Correct : C. 8
36. When the bolts are subjected to reversal of stresses, the most suitable type of bolt is
Correct : D. high strength bolt
37. Factor of safety is the ratio of
Correct : A. yield stress to working stress
38. The best arrangement to provide unified behaviour in built up steel columns is by
Correct : A. lacing
39. The ratio of shearing stress to shearing strain within elastic limit, is known as
Correct : B. shear modulus of elasticity
40. In a built up section carrying a tensile force, the flanges of two channels are turned outward
Correct : C. to have greater lateral rigidity
41. A fillet weld may be termed as
Correct : D. all the above
42. Gantry girders are designed to resist
Correct : C. lateral, longitudinal and vertical loads
43. The distance between e.g. of compression and e.g. of tension flanges of a plate girder, is known as
Correct : C. effective depth
44. The effective length of a compression member of length L held in position at both ends but not
restrained in direction, is
Correct : A. l
45. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as
Correct : A. 0.65 kn/m²
46. Design of a riveted joint is based on the assumption:
Correct : B. riveted hole is assumed to be completely filled by the rivet
47. Steel tanks are mainly designed for
Correct : C. water pressure
48. The cross-section of a standard fillet is a triangle whose base angles are
Correct : A. 45° and 45°
49. The sway bracing is designed to transfer
Correct : D. 50% of the top panel wind load to bottom bracing
50. Cold driven rivets range from
Correct : C. 12 to 22 mm in diameter
51. The mechanism method of plastic analysis satisfies
Correct : A. equilibrium and mechanism conditions
52. Rolled steel beams are designated by Indian Standard series and its
Correct : B. depth of section and weight per metre
53. When plates are exposed to weather, tacking rivets are provided at a pitch in line not exceeding
(where t is the thickness of the outside plate).
Correct : B. 16 t
54. For a compression member with double angle section, which of the following section will give
larger value of minimum radius of gyration?
Correct : B. unequal legged angles with long legs back to back
55. The gross section of the web of a beam is defined as
Correct : A. depth of the beam multiplied by its web thickness
56. Pitch of tacking rivets, when double angles connected back to back and acting as tension members
should not be more than
Correct : C. 1000 mm
57. In a tension member if one or more than one rivet holes are off the line, the failure of the member
depends upon:
Correct : D. all the above
58. The heaviest I-section for same depth is
Correct : C. ishb
59. The effective length of a compression member of length L, held in position and restrained in
direction at both ends, is
Correct : B. 0.67 l
60. Efficiency of a riveted joint is defined as the ratio of
Correct : D. all the above
61. By providing sufficient edge distance, which of the following failures of riveted joint can be
avoided?
Correct : C. shear failure of the plate
62. The maximum tensile and compressive bending stress in extreme fibres of rolled I-sections and
channels on the effective section, is
Correct : C. 1650 kg/cm2
63. When the ratio of the moment M to axial load P is greater than L/6, the resultant of the
compressive bearing pressure which acts at a distance Y from one side, is given by
Correct : B. y = (l/2) - (p/m)
64. A circular column section is generally not used in actual practice because
Correct : C. it is difficult to connect beams to the round sections
65. Rise of a Jack arch is kept about
Correct : D. 1/8 to 1/12 of the span
66. For a steel member of slenderness ratio 350, the allowable stress is 76 kg/cm2
if it is
Correct : D. all the above
67. The main type of butt joints, is a double cover
Correct : D. all the above
68. Bearing stiffener in a plate girder is used to
Correct : B. prevent buckling of web
69. The central deflection of a simply supported steel beam of length L with a concentrated load W at
the centre, is
Correct : C. wl3/48ei
70. If d is the distance between the flange angles,
Correct : D. all the above
71. Area of openings for buildings of large permeability is more than
Correct : B. 20% of wall area
72. In case horizontal stiffeners are not used, the distance between vertical legs of flange angles at the
top and bottom of a plate girder, is known as
Correct : B. clear depth
73. Pick up the correct statement from the following:
Correct : D. continuous fillers are supported by main steel beams
74. Working shear stress on the gross area of a rivet as recommended by Indian Standards, is
Correct : B. 1025 kg/cm2
75. The least dimensio D
Correct : C. 0.88 d
76. Length of an outstanding leg of a vertical stiffener, may be taken equal to
Correct : C. 1/25th of clear depth of the girder plus 25 mm
77. If the depth of two column sections is equal, then the column splice is provided
Correct : D. none of these
78. On steel structures the dead load is the weight of
Correct : D. all the above
79. A steel beam supporting loads from the floor slab as well as from wall is termed as
Correct : C. spandrel beam
80. The area Ap of cover plates in one flange of a built up beam, is given by
Correct : D. ap = zreqr - zbeam/h
81. The economical depth d of a web plate in which allowable bearing stress is fb, and the maximum
bending moment is M, as suggested by Rawater and Clark, is
Correct : D. d = 4.5 (m/fb)
82. Bending compressive and tensile stresses respectively are calculated based on
Correct : B. gross area and net area
83. The thickness t of a single flat lacing should not be less than
Correct : B. 1/40th length between inner end rivets
84. Tongue plates are provided in a steel girder at
Correct : D. the upper and lower ends of the web
85. The slenderness ratio of a column supported throughout its length by a masonry wall is
Correct : A. zero
86. The main assumption of the method of simple design of steel frame work, is:
Correct : D. all the above
87. Outstanding length of a compression member consisting of a channel, is measured as
Correct : B. nominal width of the section
88. The use of tie plates in laced columns is
Correct : C. permitted at start and end of lacing system only
89. According to IS : 800-1962 the permissible bending stress in steel slab plates, is
Correct : D. 1890 kg/cm2
90. The side thrust T on the tie rods provided at the end beam of jack arch of rise R, is calculated from
the formula
Correct : C. t = wl/8r
91. The minimum pitch of rivet holes of diameter d should not be less than
Correct : D. 2.5 d
92. Design of a riveted joint, is based on the assumption:
Correct : D. all the above
93. If is the maximum allowable bending stress in a tension member whose radius of gyration
is and depth is 2y, the required cross sectional area is given by
Correct : A. a = my/fr²
94. The load on a lintel is assumed as uniformly distributed if the height of the masonry above it, is
upto a height of
Correct : B. 1.25 times the effective span
95. Diameter of a rivet hole is made larger than the diameter of the rivet by
Correct : C. 2.0 mm for rivet diameter over 25 mm
96. According to IS: 800-1962, the coefficient of expansion of steel per degree centigrade per unit
length, is taken as
Correct : C. 0.000012
97. In case of timber structures, the simple bending formula M = fz may be applied for
Correct : A. rectangular beams up to 300 mm depth
98. Perforated cover plates are particularly suitable for built up sections consisting of
Correct : C. four angle box section
99. Effective length of a column effectively held in position and restrained in direction at both ends, is
Correct : B. 0.67 l
100. For rivets in tension with countersunk heads, the tensile value shall be