How much lap length of column in 32mm dia of concrete m45?

The lap length for a column typically depends on the diameter of the bar and the grade of concrete. For a 32 mm diameter bar in M45 concrete, the standard lap length is usually taken as 40 times the diameter of the bar, which would be 1280 mm (or 1.28 meters). However, it's important to consult relevant codes and guidelines, as factors like specific structural requirements can influence this value. Always ensure adherence to local building codes for precise specifications.