Structural Analysis
The degree of static indeterminacy of a pin-jointed space frame is given by (where m is number of unknown member forces, r is unknown reaction components and j is number of joints)

m + r – 3j
3m + r – 3j
m + r – 2j
m + r + 3j

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Structural Analysis
When a uniformly distributed load, shorter than the span of the girder, moves from left to right, then the conditions for maximum bending moment at a section is that

the load position should be such that the section divides it equally on both sides
the load position should be such that the section divides the load in the same ratio as it divides the span
the tail of the load reaches the section
the head of the load reaches the section

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

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

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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 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
None of these

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