Structural Analysis
For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust

Becomes zero
Is decreased
Is increased
Remains unchanged

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Structural Analysis
The effective and actual lengths of a cantilever are same if continuous at the support,

Unstrained against torsion at the support and free at the end
With partial restraint against torsion of the support and free at the end
None of these
Restrained against torsion at the support and free at the end

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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 head 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
the tail of the load reaches the section

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Structural Analysis
For under water concreting.

At least 10 percent more cement is required as compared to dry conditions
The volume of coarse aggregates shall not be less than one and half times and not more than twice that of fine aggregate
De-watering by pumping is not done or until 24 hours thereafter
All of these

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