Q.1
The centrifugal force due to curvature of track is assumed to act on the bridge at a height of
  • 1.23 m above the rail level
  • 1.50 m above the rail level
  • 1.83 m above the rail level
  • 2.13 m above the rail level
Q.2
Bearing stiffener in a plate girder is used to
  • transfer the load from the top flange to the bottom one
  • prevent buckling of web
  • decrease the effective depth of web
  • prevent excessive deflection
Q.3
As per IS :for compression flange, the outstand of flange plates should not exceed (where t = thickness of thinnest flange plate)
  • 121
  • 161
  • 201
  • 251
Q.4
In case of plastic design, the calculated maximum shear capacity of a beam as per IS:shall be (where, Aw = effective cross-sectional area resisting shear fy = yield stress of the steel)
  • 0.55 Awfy
  • 0.65 Awfy
  • 0.75 Awfy
  • 0.85 Awfy
Q.5
The bracing between two columns of a steel tank will be designed to resist
  • horizontal shear due to wind or earthquake only
  • horizontal, shear due to wind or earthquake + 2.5% of column loads
  • column loads + 2.5% of horizontal shear due to wind or earthquake
  • column loads + full horizontal shear due to wind or earthquake
Q.6
Lacing bars in a steel column should be designed to resist
  • Bending moment due to 2.5% of the column load
  • Shear force due to 2.5% of the column load
  • 2.5% of the column load
  • Both (A) and (B)
Q.7
Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between
  • 10° to 30°
  • 30° to 40°
  • 40° to 70°
  • 90°
Q.8
The risk coefficient k, depends on
  • mean probable design life of structures
  • basic wind speed
  • both (a) and (b)
  • none of the above
Q.9
Which of the following types of riveted joint is free from bending stresses ?
  • lap joint
  • butt joint with single cover plate
  • butt joint with double cover plates
  • none of the above
Q.10
When the bolts are subjected to reversal of stresses, the most suitable type of bolt is
  • black bolt
  • ordinary unfinished bolt
  • turned and fitted bolt
  • high strength bolt
Q.11
The best arrangement to provide unified behaviour in built up steel columns is by
  • lacing
  • battening
  • tie plates
  • perforated cover plates
Q.12
The maximum spacing of vertical stiffeners is (where d is the distance between flange angles)
  • 1.33 d
  • 1.25 d
  • 1.5 d
  • 1.75 d
Q.13
Minimum spacing of vertical stiffeners is limited to (where d is the distance between flange angles)
  • d/4
  • d/3
  • d/2
  • 2d/3
Q.14
Which of the following sections should preferably be used at places where torsion occurs?
  • Angle section
  • Channel section
  • Box type section
  • Any of the above
Q.15
As compared to field rivets, the shop rivets are
  • stronger
  • weaker
  • equally strong
  • any of the above
Q.16
According to IS Specifications, the maximum pitch of rivets in compression is (where t is thickness of thinnest outside plate or angle)
  • lesser of 200 mm and 12 t
  • lesser of 200 mm and 161
  • lesser of 300 mm and 32 t
  • lesser of 3 00 mm and 24 t
Q.17
Compression force in two end posts The pin of a rocker bearing in a bridge is designed for
  • bearing and shear
  • bending and shear
  • bearing and bending
  • bearing, shear and bending
Q.18
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
  • 0.67 L
  • 0.8 L
  • L
  • 1.5 L
Q.19
The allowable shear stress in the web of mild steel beams decreases with (where ‘h’ is height and t is thickness)
  • decrease in h/t ratio
  • increase in h/t ratio
  • decrease in thickness
  • increase in height
Q.20
The diameter of base of conical flare of a steel stack is (where d is the diameter of the cylindrical part)
  • less than d
  • equal to d
  • more than d
  • any of the above
Q.21
A butt weld is specified by
  • effective throat thickness
  • plate thickness
  • size of weld
  • penetration thickness
Q.22
The bracing provided in the plane of end posts is called
  • sway bracing
  • portal bracing
  • top lateral bracing
  • bottom lateral bracing
Q.23
For a compression member with double angle section, which of the following section will give larger value of minimum radius of gyration?
  • equal angles back to back
  • unqual legged angles with long legs back to back
  • unequal legged angles with short legs back to back
  • both (b) or (c)
Q.24
The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as
  • 1.8 L
  • 1.3 L
  • 1.1 L
  • 1.5 L
Q.25
In case of timber structures, the form factor for solid circular cross-section is taken as
  • 1.18
  • 1.414
  • 1.67
  • 1.81
Q.26
Study the following statements.i) Top lateral bracing prevents the sidesway buckling of the chord.ii) Sway bracing keeps the rectangular shape of the bridge cross-section.iii) Sway bracing transfers the load from top of end posts to bearings.The correct answer is
  • only (i)
  • both (i) and (ii)
  • both (i) and (iii)
  • all (i), (ii) and (iii)
Q.27
The effect of racking forces is considered in the design ofi) lateral bracesii) chord membersThe correct answer is
  • only (i)
  • only (ii)
  • both (i) and (ii)
  • none of the above
Q.28
Bearing stiffeners are provided ati) the supportsii) the mid spaniii) the point of application of concentrated loads The correct answer is
  • only (i)
  • both (i) and (ii)
  • both (i) and (iii)
  • (i), (ii) and (iii)
Q.29
Battening is preferable when thei) column carries axial load onlyii) space between the two main components is not very largeiii) column is eccentrically loaded The correct answer is
  • only (i)
  • only (iii)
  • (i) and (ii)
  • (ii) and (iii)
Q.30
The web crippling due to excessive bearing stress can be avoided by
  • increasing the web thickness
  • providing suitable stiffeners
  • increasing the length of the bearing plates
  • none of the above
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