RCC Structures Design
The spacing of transverse reinforcement of column is decided by the following consideration.

The least lateral dimension of the column
Forty-eight times the diameter of transverse reinforcement
Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column
All listed here

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RCC Structures Design
As per IS : 456, the reinforcement in a column should not be less than

0.7% and not more than 7% of cross-sectional area
0.6% and not more than 6% of cross-sectional area
0.5% and not more than 5% of cross-sectional area
0.8% and not more than 8% of cross-sectional area

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