Room Boundaries

Revit LT uses room boundaries when computing the area, perimeter, and volume of a room.

To check room boundaries in plan views and section views, you can select rooms or change visibility/graphic settings for the view.

Topics in this section

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.
About Room Separation Lines
Use the Room Separation Line tool to add and adjust room boundaries.
About Room Boundaries in Linked Models
When you link models together, by default Revit LT does not recognize room-bounding elements in the linked model.
About Rooms in Plan Views
Use a plan view to visually check the outer boundaries (perimeter) of a room.
About Rooms in Section Views
Use a section view to visually check the upper and lower boundaries of a room.
Make an Element Room Bounding
When you turn on the Room Bounding parameter for a model element, Revit LT uses the element as a boundary for a room. This boundary is used to compute the area and volume of the room.
Add a Room Separation Line
When room-bounding elements do not exist at the desired boundary of a room, add a separation line to help define the room.
Control the Visibility of Room Separation Lines
By default, room separation lines are visible in plan views and 3D views. Use a Visibility/Graphics setting to change their visibility in a view.
Use Room Boundaries in a Linked Model
When linking models together, you can make the host model recognize the Room Bounding parameter of elements in the linked model (including linked Revit models and linked IFC models).

Parent topic: Rooms