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

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

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Structural Analysis
The minimum horizontal distance between two parallel main reinforcing bars, is

The diameter of the bar if their diameters are same
The diameter of the longer bar if their diameters are unequal
Greatest value of the above
5 mm more than nominal maximum size of the coarse aggregate

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Structural Analysis
Pick up the correct statement applicable to cased columns.

Single I-beam or channels back with or without flange plates may be used
All of these
Single I-beam or channels back with or without flange plates may be used
The surface and edges of the steel column should be provided a concrete cover not less than 50 mm

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