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

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

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

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