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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Structural Analysis
Pick up the correct statement for the web stiffeners.

Vertical stiffeners are spaced at a distance not greater than 1.5 d and not less than 0.33 d
For horizontal stiffeners, d is the clear distance between the horizontal stiffener and the tension flange
All of these
d is the distance between flange angles or the clear distance between flanges

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