RCC Structures Design
On an absolutely rigid foundation base, the pressure will

Be more at the edges of the foundation
Be zero at the centre of the foundation
Be uniform
Not be uniform

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RCC Structures Design
Based on punching shear consideration, the overall depth of a combined footing under a column A, is

(Perimeter of column A × Safe punching stress)/(Load on column A × Upward pressure × Area of the column)
(Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column)
None of these
(Area of the column A × Safe punching stress)/Load on column A

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