Concrete and reinforcement, and steel classes can be defined and changed in the Materials row under the Building Tree .
Click the right mouse button on the Materials row in the Building Tree.
Click the Add new item line from the menu that opens.
Select one of the definitions of Concrete, Steel from the material type list.
Depending on your choice, the selected material values will appear in the dialog.
Identification of reinforced concrete material
Select Concrete as the material type .
Select the concrete class from the list in the reinforced concrete characteristic compressive strength line.
If a different strength from the list is to be used, you can write the strength value yourself as MPa. (28 MPa is written in the sample screenshot.)
Select the reinforcement class for flexural reinforcement from the list in the flexural reinforcement yield strength line.
If a different strength from the list is to be used, you can write the strength value yourself as MPa. (425 MPa is written in the sample screenshot.)
You can also make a selection in the stirrup yield strength line for transverse reinforcement.
Identification of steel material
Select Steel as the material type .
Select the steel grade from the list in the steel yield strength (Fy) line.
If a different strength from the list is to be used, you can write the strength value yourself as MPa.