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c Creates desired views and uses Revit MEP tools to develop the design.
d Turns on the Room Bounding parameter for the linked model.
This step ensures that the Revit MEP project recognizes room-bounding elements in the Revit
Architecture project. See
Using Room Boundaries in a Linked Model on page 920.
e Places spaces in the Revit MEP model.
The spaces use the room boundaries defined by the Revit Architecture project.
As an alternative, teams can create a Revit project and enable worksharing. The architect and the mechanical
engineer each use separate worksets. See
Working in a Team on page 1189.
How Revit Architecture and Revit MEP Share Information
When you link a Revit Architecture project to a Revit MEP project, consider the following:
■ Spaces (created in Revit MEP) can be bounded by elements in linked models, in the host model, or in
both.
■ Spaces are affected by room separation lines. Rooms are not affected by space separation lines.
■ Spaces are measured from the wall finish face.
■ In Revit MEP, spaces use the computation height that is defined in the architectural model. See
Computation Height on page 926.
■ A space understands in which room of a linked model it resides, and it can report the identity of that
room. This information is based on relative locations, not on a link to a specific room ID.
■ Multiple spaces can access the identity of a single room in a linked model.
■ Rooms can exist in design options. (See Design Options and Rooms on page 1256.) Spaces cannot exist in
design options.
■ If the architectural model changes, spaces are not deleted in the host MEP model. Spaces can become
unenclosed, redundant, or ambiguous, as they would if the same changes were made in the host model.
■ Modification of one model does not propagate to linked models. If the architectural model and the MEP
model link to each other, changes to the architectural model may not be matched by changes in the
MEP model until the MEP model is opened, resaved, and reloaded.
Phase-Specific Rooms and Boundaries
All rooms are phase-specific in a project. When you add a room to a plan view or create a room by adding
a row to a room schedule, the room is automatically assigned to the phase specified for the view.
As the project progresses, you can report room areas for different phases. Also, the same room name and
number can exist in the same or different locations of the model, as long as they are in different phases. To
achieve this, do not switch the phase in the same plan view, but make duplicate plan views with dedicated
phases.
You can make edits to room-bounding elements in one phase without affecting other phases. For example,
you can delete room-bounding walls in one phase and, provided those walls do not exist in other phases,
not impact room boundaries in other phases. Revit Architecture ignores any room-bounding elements that
do not exist in the active phase in which you are working.
934 | Chapter 14 Rooms and Areas