How one can calculate PUNC CHEK but with a given area of longitudinal reinforcement? I thought that if we calculate first “Design parameters of area elements” the software will automatically choose the prescribed area of longitudinal reinforcement and with PUNC CHEK calculate vrd,c with that reinforcement…
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Anyone?
Still waiting… 
Through the command PUNC in BEMESS-module, with the options RO you can set till which ratio the bending reinforcement should be considered:
RO_V: Maximum bending reinforcement ratio due to shear in the punching area for design without adding punching reinforcement
RO_L , RO_M: minimum and maximum bending reinforcement ratio, if punching reinforcement is required.