TS500 - 8.1.5.2 cutting force upper limit control is done automatically.
ICONS
b w = Element body width
d = Element useful height
f cd = Design compressive strength of concrete
V d = Design shear force
Shear Force Upper Limit
In order to prevent crushing of the body concrete due to high principal compressive stresses, the calculation shear force is limited as shown below. If this condition is not fulfilled, the section dimensions should be increased.
V d ≤ 0.22 f cd b w d