On the WALLS AND FLOORS tab, in the Tools group, click Split Floor/Screedthe user is prompted to ‘Identify PANE SCREED FLOOR GWALL to be split’. From the 3D view, pick the floor/screed to be split. The user is then prompted to ‘Pick STN STWALL PANE SCREED FLOOR GWALL to be split on’. Pick the structure the floor/screed to be split on in the 3D graphical view. Once the selections have been made the floor/screed is split.