Structural Analysis
If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by

m + r + 2j
m + r – 2j
m + r – 3j
m – r + 2j

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Structural Analysis
Pick up the incorrect statement from the following:

The gross section of the web of rolled I-beams is the depth of the beam multiplied by the web thickness
None of these
The gross section of the web of plate girders is the depth of the web plate multiplied by its thickness
The gross section of the web of channels is the depth of the web multiplied by its thickness

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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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