Cutting an Opening in a Floor

You can insert an opening of any shape and size in a floor by defining the area to be cut out, then deleting it. You may need to do this to accommodate a staircase.

To insert an opening in a floor:

1. Select Insert > Room Division, or click the Room Division button on the Building toolbar.

2. Select points to define the outline of the opening, ensuring the outline forms a closed shape.

3. Right-click and select Finish. An outline is created on the floor surface. You can stretch, move and curve the outline if necessary to get the exact size and shape you want.

4. Go into 3D view and make sure the floor is visible and accessible.

5. Click in the center of the outline you drew to select the outline.

6. Press the Delete key on your keyboard, or right-click and select Delete, or select Edit > Modify Elements > Delete.