Windows and doors

Windows and doors should be placed in a wall, slab, or roof. If the rooms are not positioned in the main construction, the IFC will not recognize the relation between the window or door with the wall, slab, or roof. This relation is required to know the face in which to position the window or door.

Autodesk Revit checks whether the standard windows or doors are positioned in a wall. If a custom family is created for windows or doors, an opening should be defined when setting up this family.

Figure 22: A “window family” for which a connection with the wall has been defined. The “opening cut” has been defined in this case.

Figure 23: The same window, but without a connection with the wall. No “opening cut” has been defined in this case.

Figure 24: The window without a relation with the wall, i.e. without an “opening cut”. When positioning this window, no opening is created in the wall. This means you are required to draw the wall around the windows, or to create a separate opening in the wall.

When applying the windows and doors correctly, the IFC file gets a correct internal relational structure among the windows/doors, the opening, and the wall. See the scheme below.