6 Column Longitudinal Reinforcement Requirements
1).Minimum area of cross-section of longitudinal bars must be atleast 0.8% of gross section area of the column.
2).
Maximum area of cross-section of longitudinal bars must not exceed 6% of the gross cross-section area of the column.
3).
The bars should not be less than 12mm in diameter.
4). Minimum number of longitudinal bars must be 4 in rectangular column
5). Minimum number of longitudinal bars must be 6 in in circular column
6).
Spacing of longitudinal bars measures along the periphery of a column should not exceed 300mm.