RCC Structures Design
The width of the flange of a T-beam, which may be considered to act effectively with the rib depends upon

Overall thickness of the rib
Breadth of the rib
All of the listed here
Centre to centre distance between T-beams

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RCC Structures Design
The self-weight of the footing, is

Not considered for calculating the area of the footing
Also considered for calculating the upward pressure on footing
Not considered for calculating the upward pressure on footing
Both (b) and (c)

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