RCC Structures Design
The radius of a bar bend to form a hook, should not be less than

Five times the diameter
Twice the diameter
Thrice the diameter
Four times the diameter

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

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)
(Perimeter of column A × Safe punching stress)/(Load on column A × Upward pressure × Area of the column)

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