The Longitudinal reinforcement tab allows you to define the parameters of longitudinal reinforcement of an RC member according to the ACI 318 codes.
Bar diameters can be different for top and bottom reinforcement of a beam. Similarly, a column can have reinforcement along h and b sides.
If the same diameters are used for the entire element then The same type of bars for both directions option should be selected.
The cover can be calculated as a cover to axis or clear cover of bottom reinforcement. Cover values are converted automatically.