Floor management

Overview

Floor management manages the organizational hierarchy of the building model: building → storeys (building levels) → rooms. Here you create buildings and storeys, rename them, remove them, reassign rooms to a different storey and move entire storeys between buildings. A schematic diagram visualizes the storey heights of the selected building. The underlying terms of the building structure are explained in Building structure & terms.

Access

Mode toolbar to the left of the 3D scene, button Structure, then the Building structure page. The button is only visible in the Building workspace and only active when the project contains at least one building — the first building and its storey usually come into existence when drawing the first room.

Tree view of the building structure

The table shows all buildings as the top level and their storeys below, with three columns:

Column	Content
Building/Floor	Name of the building or storey
Height above ground reference [m]	Elevation of the storey’s lower edge
Room height [m]	Clear room height of the storey

All cells are editable directly in the table (double-click or F2):

• Name: renaming a building or storey; names are automatically kept unique (within the project or within the building).
• Height above ground reference and Room height: editable only for storeys; invalid numeric entries are discarded.

All changes can be reverted via Edit > Undo.

Adding and removing buildings

Next to the label Building there are two buttons:

• opens the Add building dialog with the field Name of the new building: (default “Building”, automatically numbered on a name conflict). The new building is then selected in the tree.
• removes the building selected in the tree. If it still contains storeys, the safety prompt “The selected building still contains storeys, which will also be removed together with all rooms they contain. Continue?” appears.

Adding and removing storeys

Next to the label Building level:

• creates a storey in the currently selected building (with a storey selected: in its building). In the Add building level dialog, you enter the name (New building level/floor name:, default “Storey”) and elevation (Elevation: in m, default: elevation of the most recently created storey). The OK button remains disabled until the name and numeric value are valid.
• removes the selected storey. If it still contains rooms, the safety prompt “The selected storey still contains rooms, which will also be removed together with all surfaces they contain. Continue?” appears.

Assigning rooms to a storey

To move rooms into a different storey:

1. Select rooms in the 3D scene or in the navigation tree (only visible, selected rooms are considered).
2. In the floor management, mark the target storey in the tree.
3. Click Assign selected room (the label changes to Assign selected rooms with several rooms).

The rooms are moved with all their surfaces into the target storey; room names are automatically made unique there if necessary. The geometry remains unchanged — only the assignment in the building structure changes.

Assigning storeys to a building

Analogously, entire storeys can be moved into a different building:

1. Select storey(s) in the navigation tree.
2. In the floor management, mark the target building in the tree.
3. Click Assign selected storey (with several: Assign selected storeys).

Storey-height diagram

To the right of the tree, a section diagram shows the currently selected building (with no selection: the project’s first building):

• The storeys are displayed stacked, sorted by elevation, each with name, room height (dimension arrow in m) and elevation of the lower edge.
• The displayed slab thickness between the storeys is estimated as the median of the gaps between “top of room” and “bottom of the next storey” — it is purely a visualization, not a model parameter.

This makes it possible to spot input errors (overlapping storeys, implausible gaps) at a glance.

Related topics

• Building structure & terms
• Drawing rooms
• Room properties