Structural Analysis
If in a pin-jointed plane frame (m + r) > 2j, then the frame is (Where ‘m’ is number of members, ‘r’ is reaction components and ‘j’ is number of joints)

Stable and statically indeterminate
Unstable
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
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

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Structural Analysis
For under water concreting.

De-watering by pumping is not done or until 24 hours thereafter
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
All of these

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