Structural Analysis
The three moments equation is applicable only when

There is no discontinuity such as hinges within the span
The beam is prismatic
The spans are equal
There is no settlement of supports

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Structural Analysis
For under water concreting.

At least 10 percent more cement is required as compared to dry conditions
All of these
De-watering by pumping is not done or until 24 hours thereafter
The volume of coarse aggregates shall not be less than one and half times and not more than twice that of fine aggregate

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