If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension will be taken as
A. 120 mm
B. 160 mm
C. 200 mm
D. 300 mm
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The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is
A. 1.0 mm
B. 1.5 mm
C. 2.0 mm
D. 2.5 mm
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The slenderness ratio of a column supported throughout its length by a masonry wall is
A. Zero
B. 10
C. 100
D. Iinfinity
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The external wind pressure acting on a roof depends on
A. Degree of permeability of roof
B. Slope of roof
C. Both (A) and (B)
D. None of the above
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If the loaded length of span in meters of a railway steel bridge carrying a single track is 6 m, then impact factor is taken as
A. 0
B. 0.5
C. Between 0.5 and 1.0
D. 1.0
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Minimum pitch provided in riveted steel tanks is (where d is diameter of rivets)
A. 1.5 d
B. 2.0 d
C. 2.5 d
D. 3.0 d
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The allowable tensile stress in structural mild steel plates for steel tank is assumed as
A. 95.0 MPa on net area
B. 105.5 MPa on net area
C. 105.5 MPa on gross area
D. 150.0 MPa on gross area
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Other conditions being same, the load factor in indeterminate structures is
A. Equal to load factor in determinate structures
B. More than the load factor in determinate structures
C. Less than the load factor in determinate structures
D. Unpredictable
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In case of timber structures, the simple bending formula M = fz may be applied for
A. Rectangular beams up to 300 mm depth
B. All rectangular beams
C. Solid circular beams only
D. All square cross-section beams
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As per IS : 875, for the purposes of specifying basic wind velocity, the country has been divided into
A. 4 zones
B. 5 zones
C. 6 zones
D. 7 zones
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The portal bracing in a truss bridge is used to
A. Transfer load from top of end posts to bearings
B. Keep the rectangular shape of the bridge cross-section
C. Stiffen the structure laterally
D. Prevent the sides-way buckling of top chord
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The ratio of plastic section modulus to elastic section modulus
A. Is equal to 1
B. Is always less than 1
C. Is always greater than 1
D. Can be less than 1
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The web crippling due to excessive bearing stress can be avoided by
A. Increasing the web thickness
B. Providing suitable stiffeners
C. Increasing the length of the bearing plates
D. None of the above
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Battening is preferable when the
i) column carries axial load only
ii) space between the two main components is not very large
iii) column is eccentrically loaded
The correct answer is
A. Only (i)
B. Only (iii)
C. Both (i) and (ii)
D. Both (ii) and (iii)
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Bearing stiffeners are provided at
i) the supports
ii) the mid span
iii) the point of application of concentrated loads
The correct answer is
A. Only (i)
B. Both (i) and (ii)
C. Both (i) and (iii)
D. (i), (ii) and (iii)
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The effect of racking forces is considered in the design of
i) lateral braces
ii) chord members
The correct answer is
A. Only (i)
B. Only (ii)
C. Both (i) and (ii)
D. None of the above
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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
A. Only (i)
B. Both (i) and (ii)
C. Both (i) and (iii)
D. All (i), (ii) and (iii)
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Select the correct statement
A. Material cost of a rivet is higher than that of a bolt
B. Tensile strength of a bolt is lesser than that of a rivet
C. Bolts are used as a temporary fastening whereas rivets are used as permanent fastenings
D. Riveting is less noisy than bolting
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In case of timber structures, the form factor for solid circular cross-section is taken as
A. 1.18
B. 1.414
C. 1.67
D. 1.81
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The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as
A. 1.8 L
B. 1.3 L
C. 1.1 L
D. 1.5 L
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