The Transversal reinforcement tab of the Definition of calculation parameters dialog box for BS Code:

In the top part of a dialog box, data about parameters of reinforcing steel can be determined. It can be completed by either choosing the appropriate steel grade or giving fy resistance.
Either stirrups or spirals may be chosen for Transversal reinforcement. Presently, spiral reinforcement is not available.
At the bottom of the dialog, parameters of stirrup reinforcement are defined.
- Type of reinforcing bars for a stirrup. A diameter list in metric units is accessible.
- Number of legs, that allows to define two, three, four and more legs of stirrups
- Number of reinforcement zones, allowing you to specify the maximum number of zones to which stirrup spacings are assigned. For each zone a spacing of stirrups is uniform.
- Modularity of spacings, determining a list of stirrup spacings by modularity value. If a Modularity of spacings is defined as 2" , the accessible spacings are 2,4,6,8 etc., and for Modularity of spacings as 0,5", the accessible spacings are 0.5, 1, 1.5, 2.0...
- A list of user defined stirrup spacings not linked with any modular value for element reinforcement. For example 1 ,2 ,3 ,6 , and 9.
Use the Take longitudinal reinforcement into consideration option to consider longitudinal reinforcement during calculation of a transversal reinforcement area. It decreases the transversal reinforcement area because longitudinal reinforcement is provided.