Hello, In the default setting of newly opened floors, the column layer remains closed. 1. Unfold the floors. 2. Move to any vacant floor. 3. Enter the layer settings. There, tick the line "Apply to all Drawings". 4. Open the column layer. 5. Switch the floor to which you will copy and make a copy. ---- Also, I noticed that there is dilatation in your project. In version 5, you cannot solve dilated structures together in the same project file. You must resolve each dilation as separate projects. Good work...