Structural Analysis
When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when

None of these
The wheel load under consideration is midway between the centre of span and the centre of gravity of the load system
The centre of span is midway between the centre of gravity of the load system and the wheel load under consideration
The centre of gravity of the load system is midway between the centre of span and wheel load under consi-deration

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Structural Analysis
Pick up the correct statement for the web stiffeners.

d is the distance between flange angles or the clear distance between flanges
For horizontal stiffeners, d is the clear distance between the horizontal stiffener and the tension flange
Vertical stiffeners are spaced at a distance not greater than 1.5 d and not less than 0.33 d
All of these

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Structural Analysis
The effective length of lacing is the distance

Between the inner ends of effective lengths of welds connecting the members
0.7 of the distance between the inner end rivets of the bar for double lacing
Between the inner end rivets of the bar for single lacing
All of these

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