1. Effective length of a column effectively held in position and restrained in direction at one end but
neither held in position nor restrained in direction at the other end, is
Correct : D. 2 l
2. The equivalent axial load may be defined as the load which produces a stress equal to
Correct : A. maximum stress produced by the eccentric load
3. If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension
will be taken as
Correct : B. 160 mm
4. The connection of one beam to another beam by means of an angle at the bottom and an angle at
the top, is known as
Correct : C. seated connection
5. The channels get twisted symmetrically with regard to its axis
Correct : B. parallel to web
6. Bolts are most suitable to carry
Correct : C. axial tension
7. Rolled steel angle sections are classified as
Correct : D. all the above
8. According to I.S. : 800 - 1871, lacing bars resist transverse shear equal to
Correct : C. 2.5% of the axial load
9. The effective length of a battened strut effectively held in position at both ends but not restrained
in direction is taken as
Correct : C. 1.1 l
10. The method of design of steel framework for greatest rigidity and economy in weight, is known as
Correct : C. fully rigid design
11. For a cantilever beam of length built-in at the support and restrained against torsion at the free
end, the effective projecting length is
Correct : B. l = 0.75 l
12. Economical depth of a plate girder corresponds to
Correct : A. minimum weight
13. Slenderness ratio of a compression member is
Correct : C. radius of gyration/effective length
14. The least permissible clear dimension of the web of thickness t in the panel of a plate girder, is
restricted to
Correct : D. 180 t
15. Web crippling generally occurs at the point where
Correct : C. concentrated loads act
16. The basic wind speed is specified at a height 'h' above mean ground level in an open terrain. The
value of 'h' is
Correct : A. 10 m
17. If d is the distance between the flange angles, the vertical stiffeners in plate girders are spaced not
greater than
Correct : C. 1.5 d
18. If d is the distance between the flange angles of a plate girder, vertical stiffeners are provided at a
distance not greater than
Correct : B. 1.25 d but not less than 0.33 d
19. The allowable tensile stress in structural mild steel plates for steel tank is assumed as
Correct : B. 105.5 mpa on net area
20. A second horizontal stiffener is always placed at the neutral axis of the girder if the thickness of
the web is less than
Correct : C. both (c) and (b)
21. The strength of ISA 125 = 75 × 10 mm used as a tie member with its longer leg connected at the
ends by 27 mm diameter rivets, is
Correct : D. 26,075 kg
22. For a column of height fixed in position and direction both at its top and bottom, its effective
length, is
Correct : C. ½ l
23. As per ISI, rolled steel beam sections are classified into
Correct : D. five series
24. Shape factor is a property which depends
Correct : C. only on the geometry of the section
25. A tension member, if subjected to possible reversal of stress due to wind, the slenderness ratio of
the member should not exceed
Correct : D. 350
26. Lug angles
Correct : A. are used to reduce the length of connection
27. The Indian standard code which deals with steel structures, is
Correct : B. is : 800
28. Under a concentrated load, bearing stress fb in a beam is given by (where b is the length of the
bearing plate and h is the depth of the root of the fillet).
Correct : B. fb = w/(b + 2h tw
29. When the axis of load lies in the plane of rivet group, then the rivets are subjected to
Correct : A. only shear stresses
30. For double angles carrying tension, placed back to back and connected to either side of the gusset
plate, the sectional area of the section, is equal to cross sectional area of
Correct : C. the section minus area of rivet holes
31. The beam outside a wall upto floor level above it, is known as
Correct : C. spandrel beam
32. In the cross-section of a weld, throat is the
Correct : A. minimum dimension
33. The rivets which are heated and then driven in the field, are known
Correct : B. power driven field rivets
34. According to IS: 800, in the Merchant Rankine formula the value of imperfection index (n) is
Correct : B. 1.4
35. When a large value of radius of gyration is not required
Correct : B. channel flanges are kept inward
36. The ratio of hydrostatic stress to the volumetric strain within the elastic range, is called
Correct : D. all the above
37. Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to
weather, is
Correct : B. 6 mm
38. If d is the distance between the flange angles, the vertical stiffeners in plate girders without
horizontal stiffeners, are spaced at a distance not less than
Correct : C. 0.33 d
39. Long column is one
Correct : D. which has a ratio of effective length and least lateral dimension more than 15
40. To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall
be
Correct : B. 2
41. When the length of a tension member is too long
Correct : C. a bar is used
42. In factory buildings, the horizontal beams spanning between the wall columns supporting a wall
covering, are called
Correct : C. girts
43. The minimum thickness of plates in a steel stack should be
Correct : C. 6 mm
44. To keep the intensity of bearing pressure between the column base and concrete, compressive
throughout the length of the column base, the ratio of the moment M to axial load P should be
Correct : B. < l/6
45. A structural member subjected to tensile force in a direction parallel to its longitudinal axis, is
generally known as
Correct : D. all the above
46. Compression force in two end posts, the pin of a rocker bearing in a bridge is designed for
Correct : D. bearing, shear and bending
47. According to the Unwin's formula, if is thickness of the plate in mm, the nominal diameter of
the rivet, is
Correct : C. d = 1.91 t
48. The ratio of plastic section modulus to elastic section modulus
Correct : C. is always greater than 1
49. Bulb angles are used in
Correct : C. ship building
50. The diameter of a bolt hole is taken as the nominal diameter of the bolt plus
Correct : D. 1.6 mm
51. The minimum thickness of a steel plate, which is directly exposed to weather and is not accessible
for cleaning and repainting, should be:
Correct : C. 8 mm
52. For determination of allowable stress in axial compression, Indian Standard Institution has
adopted
Correct : D. secant formula
53. Rolled steel beams are:
Correct : D. all the above
54. According to IS : 800 - 71, the minimum thickness of a vertically stiffened web plate, shall not be
less than
Correct : D. d/250
55. A web plate is called unstiffened if the ratio of clear depth to thickness is less than
Correct : D. 85
56. A butt weld is specified by
Correct : A. effective throat thickness
57. The most economical section for a column, is
Correct : D. tubular section
58. In rolled steel beams, shear force is mostly resisted by
Correct : A. web only
59. If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be
Correct : B. 60 mm
60. The minimum edge distance of a rivet line connecting two or more plates, is kept equal to 37 mm
plus (where t is the thickness in mm of the thinner outside plate).
Correct : B. 4 t
61. For simply supported beams, the maximum permitted deflection, is
Correct : A. 1/325 of the span
62. The rolled steel I-sections are most commonly used as beams because these provide
Correct : D. all the above
63. As per IS : 875, for the purposes of specifying basic wind velocity, the country has been divided
into
Correct : C. 6 zones
64. Net sectional area of a tension member, is equal to its gross section area
Correct : D. none of these
65. For a single section used as a tension member, the given area is assumed
Correct : C. 40% to 50% in excess of the net area
66. The effective length of a weld, is taken as the actual length
Correct : B. minus twice the size of weld
67. The greatest gauge of long rivets should not exceed (where d is the diameter of the holes).
Correct : D. 8 d
68. The shape factor of an isosceles triangle for bending about the axis parallel to the base is:
Correct : D. 2.34
69. Rolled steel Tee-sections are used
Correct : B. with flat strips to connect plates in steel rectangular tanks
70. Which of the following types of riveted joint is free from bending stresses?
Correct : C. butt joint with double cover plates
71. The beams supporting the steps of a stair are generally known as
Correct : C. stringers
72. Poisson's ratio for steel within elastic limit, ranges from
Correct : C. 0.25 to 0.33
73. The minimum width B of a solid casing for a cased beam, is equal to
Correct : D. b = b + 100 mm
74. Horizontal stiffener in a plate girder is provided to safeguard against
Correct : B. compression buckling of web plate
75. If W and L are the total superimposed load and the span of a plate girder in metres, the
approximate self weight (W) of the girder, is taken as
Correct : C. m = wl/300
76. Maximum permissible slenderness ratio of a member normally acting as a tie in a roof truss, is
Correct : D. 350
77. Normally, the angle of roof truss with asbestos sheets should not be less than
Correct : B. 30°
78. An imaginary line along which rivets are placed, is known as
Correct : D. all the above
79. Pick up the correct statement from the following:
Correct : D. all the above
80. The capacity of the smallest pressed steel tank is
Correct : C. 1950 litre
81. The permissible stress to which a structural member can be subjected to, is known as
Correct : B. working stress
82. Tacking rivets in tension members, are provided at a pitch in line not exceeding
Correct : D. 100 cm
83. In case of timber structures, the form factor for solid circular cross-section is taken as
Correct : A. 1.18
84. The distance between the outer faces of flanges of a plate girder, is known as
Correct : A. overall depth
85. When the depth of a plate girder is at least times the depth of vertical leg of the flange angles,
the girder is known as deep plate girder, if is
Correct : D. 8
86. Which of the following conditions is to be satisfied both in elastic and plastic analysis?
Correct : A. equilibrium condition
87. If the pitch is 6 cm and rivet value is 4 tonnes, the number of rivets required for a riveted
connection carrying an eccentric load of 15 tonnes at a distance of 30 cm from the centre line, is
Correct : B. 8
88. In a grillage footing, the maximum shear force occurs at the
Correct : B. centre of base plate
89. The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter
is
Correct : B. 1.5 mm
90. Pick up the correct statement from the following:
Correct : D. all the above
91. The greatest permissible clear dimension of the web of thickness t in the panel of a plate girder, is
restricted to
Correct : D. 270 t
92. The maximum slenderness ratio of a compression member carrying both dead and superimposed
load is
Correct : A. 180
93. Pick up the incorrect statement from the following:
Correct : D. the diameter of a rivet hole is equal to the nominal diameter of the rivet plus 1.5 mm
94. Effective length of a column effectively held in position at both ends and restrained in direction at
one end, is
Correct : C. 0.85 l
95. If the unsupported length of a stanchion is 4 metres and least radius of gyration of its cross-section
is 5, the slenderness ratio of the stanchion, is
Correct : C. 80
96. For a cantilever beam of length continuous at the support and unrestrained against torsion at
the support and free at the end, the effective length is equal to
Correct : D. l = 3l
97. Hudson's formula gives the dead weight of a truss bridge as a function of
Correct : A. bottom chord area
98. The deflection of beams may be decreased by
Correct : A. increasing the depth of beam
99. The moment-curvature relation at a plastic hinge is
Correct : C. constant moment for all curvatures
100. If the depth of the section of an upper column is smaller than the lower column