RCC Structures Design
The diameter of the column head support a flat slab, is generally kept

0.25 times the span length
5.0 cm larger than the diameter of the column
4.0 cm larger than the diameter of the column
0.25 times the diameter of the column

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

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

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