About Room-Bounding Elements

To indicate that an element should be used to define the boundaries of a room for room area and volume computations, you must specify that the element is room-bounding.

By default, the following elements are room-bounding:

• Walls (curtain, standard, in-place, face-based)
• Roofs (standard, in-place, face-based)
• Floors (standard, in-place, face-based)
• Ceilings (standard, in-place, face-based)
• Columns (architectural, structural with material set to concrete)
• Curtain systems
• Room separation lines
• Building pads

You can indicate whether many elements are room-bounding by changing element properties. For example, you may want to define toilet partitions as non-bounding because they are not usually included in room computations. When you specify that an element is non-bounding, the element is not used when Revit computes the area or volume of the room or any adjacent rooms that share the non-bounding element.

You can also use many elements in linked IFC files as room boundaries.