RCC Structures Design
If ‘p’ is the net upward pressure on a square footing of side ‘b’ for a square column of side ‘a’, the maximum bending moment is given by

M = pb (b - a)²/8
M = pb (b + a)/8
M = pb (c - a)/4
M = pb (b - a)²/4
M = pb (b + a)/8

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RCC Structures Design
As per IS : 456, the reinforcement in a column should not be less than

0.5% and not more than 5% of cross-sectional area
0.6% and not more than 6% of cross-sectional area
0.7% and not more than 7% of cross-sectional area
0.8% and not more than 8% of cross-sectional area

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