RCC Structures Design
If the bearing capacity of soil is 10 tonnes/cm² and the projection of plain concrete footing from walls, is a cm, the depth D of footing is

D = 0.0775 a
D = 0.775 a²
D = 0.775 √a
D = 0.775 a

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

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

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