Columns: the maximum spacing of transverse reinforcement scl,tmax
Eurocode 2 part 1-1: Design of concrete structures 9.5.3 (3)
The recommended value for the maximum spacing of transverse reinforcement along the column scl,tmax is the least of the three distances:
- 20 times the minimum diameter of the longitudinal bars
- the lesser dimension of the column
- 400 mm.