Reinforcement for FNL calculation

Positioning of equivalent reinforcement on a cross section:


Horizontal reinforcement positioning

During calculation horizontal positioning of reinforcement is not important for 2D-Frame and 2D-Grillage projects. It's only relevant in case of 3D-Frame.

Horizontal reinforcement positioning for FNL calculation


Vertical reinforcement positioning

Vertical reinforcement positioning for FNL calculation


Reinforcement definition for FNL calculation may be restricted by Technical modules No. 126, 127, 128 - in this case FNL calculation will be disabled


Dimension units


Dimension units


Reinforcement/stirrups diameter



Reinforcement placement

[bars], [mm²], [w%]

Depending on the relative dimension unit selected in Options preferences

Concrete cover