Structural Analysis
If in a rigid-jointed space frame, (6m + r) < 6j, then the frame is

None of these
Stable and statically determinate
Unstable
Stable and statically indeterminate

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

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

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

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