Hello, as far as I have seen from some old topics and engineers, it is said that if beams are used on any floor in cork flooring, "0-thickness column header" should be used in order to verify the punching on the columns. Is this still valid? Is it essential for the calculation that we assign headings to the columns on the floor that is a beam in a mushroom system? Also, in an experiment I made today, when I defined a zero-height column head for a column that exceeds the punching limit on a floor with a beam in the mushroom system, the punching value fell below 1, in this case, don't we define an object that will not be manufactured and cause the punching calculation to be wrong? Thanks..