Structural Analysis
Principle of superposition is applicable when

Deflections are linear functions of applied forces
The action of applied forces will be affected by small deformations of the structure
None of these
Material obeys Hooke's law

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

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

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