RCC Structures Design
If T and R are the tread and rise of a stair which carries a load w per square metre on slope, the corresponding load per square metre of the horizontal area, is

w √(R² + T²)/T
w √(R + T)/T
w (R/T)
w (R + T)/T

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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 centre of the column
24 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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