DESIGN OF STEEL STRUCTURE QUIZ

The bracing provided in the plane of end posts is called

bottom lateral bracing

top lateral bracing

portal bracing

sway bracing

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Rivets connecting flange angles to cover plates in a plate girder are subjected to

C. Both (A) and (B)

Vertical load only

None of these

Horizontal shear only

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As per IS : 800, for compression flange, the outstand of flange plates should not exceed (where t = thickness of thinnest flange plate)

164

161

163

162

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To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be

4

3

2

5

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Other conditions being same, the load factor in indeterminate structures is

More than the load factor in determinate structures

Equal to load factor in determinate structures

Unpredictable

Less than the load factor in determinate structures

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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

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Load factor is

always greater than factor of safety

always equal to factor of safety

sometimes greater than factor of safety

always less than factor of safety

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When the axis of load lies in the plane of rivet group, then the rivets are subjected to

both (a) and (b)

only tensile stresses

only shear stresses

None of these

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If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be

80mm

60mm

40mm

100mm

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The maximum spacing of vertical stiffeners is (where d is the distance between flange angles)

1.25 d

1.33 d

1.5 d

1.75 d

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