Answer:
The determination of the minimum shear reinforcement Asw,min in RF‑PUNCH Pro is based on Equation 9.11DE from DIN EN 1992‑1‑1, 9.4.3.The initial values used for the determination of Asw,min are displayed in the result window "2.2 Required Punching Shear Reinforcement" in the "Minimum Punching Shear Reinforcement" section, so that the calculated value can be followed.
In this case, you should note that, according to the standard, the calculated value Asw,min refers to the "cross-section of a shear stud (or equivalent)". In RF‑PUNCH Pro, this value is then multiplied by the tangential number of the individual shear studs, whereby the absolute value of the minimum reinforcement [cm²] in the individual perimeters can increase outwardly with the increasing length of the perimeter or the increasing number of shear studs.
