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 outer edge of the column
42 diameters from the centre 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

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

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