Hi, in version 5, you must define a column header under the columns in architectural plan mode to check for punching on beamless raft foundations. If the column header will not be applied in the project, if the purpose is to verify only stapling, the Height and table height values should be entered as zero in the column header settings. The X and Y size of the header doesn't matter. It is sufficient that it is sized to fit under the column. The program automatically calculates the stapling area and stapling circumference here. As you said, the column header will not be applied in the project. I just set the height and table value to zero for verification. I had a problem with the size of the column header in the municipality. I entered the header of the 30/60 column as 60/90. But the municipality said the column header dimensions are not appropriate.