RCC Structures Design
Top bars are extended to the projecting parts of the combined footing of two columns L distance apart for a distance of

0.1 L from the outer edge of column
One-fourth the distance of projection
0.1 L from the centre edge of column
Half the distance of projection

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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

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

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