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

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

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RCC Structures Design
Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than

24 diameters from the centre of the column
42 diameters from the centre of the column
42 diameters from the outer edge of the column
42 diameters from the inner edge of the column

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RCC Structures Design
In a beam the local bond stress Sb, is equal to

Leaver arm/(Shear force × Total perimeter of reinforcement)
Leaver arm/(Bending moment × Total perimeter of reinforcement)
Total perimeter of reinforcement/(Leaver arm × Shear force)
Shear force/(Leaver arm × Total perimeter of reinforcement)

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