RCC Structures Design
Design of a two way slab simply supported on edges and having no provision to prevent the corners from lifting, is made by

Rankine Grashoff formula
Grashoff formula
Rankine formula
Marcus formula

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

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