can link Revit Architecture, Revit Structure, and Revit MEP models. Linking
Revit models is primarily intended for linking separate buildings,
such as those that compose a campus.
When you link a Revit
model into a project, Revit Architecture opens the linked model and keeps
it in memory. The more links a project contains, the longer it can
take to open.
Linked Revit models
are listed in the Revit Links branch of the Project Browser.
You can convert linked
Revit models to groups, and you can convert groups to linked Revit
Converting Groups and Linked Revit Models.
You can also mirror linked Revit models. See
When Should You Use Linked
It is recommended to
use linked models for
- Separate buildings on a site or campus
- Parts of buildings which are being designed
by different design teams or designed for different drawing sets
- Coordination across different disciplines
(for example, an architectural model and a structural model)
Linked models may also
be appropriate for the following situations
- Townhouse design when there is little
geometric interactivity between the townhouses
- Repeating floors of buildings at early
stages in the design, where improved Revit model performance (for
example, quick change propagation) is more important than full geometric
interactivity or complete detailing
In later stages of a
project, it is generally not recommended to create a single building
model with linked models due to the following
- Limited joining and interaction between
elements in the host project and elements in the linked models will
prevent elements from cleaning up or joining with elements in linked
- Difficulty managing element names, numbers,
and identity data between the host project and the linked models,
which can result in duplicate names or numbers
- Separate project standards for the host
project and linked models, causing models to become out of sync
with one another
- Maintaining control; in order to do this
linked models need to be carefully managed (for example, linked
model file names and file paths do not change once files are imported
into a host project)
- More complex detailing and annotation
process; some details and annotations will need to be in the linked
model and others will need to be in the host project
Linking Revit Models that
you import a Revit model that contains a linked Revit model, links
become nested. You can show (or hide) nested linked models in the
host model. By default, nested linked models are not visible in
the host model.
When a nested link is
visible, you can use Tab to select nested link
instances and view properties of elements in the nested link, as
you can with other linked models. In addition, the Interference
Check tool checks for interference in the nested linked models as
well as the parent linked model.
Nested links that are
visible in the project display in the Revit Links branch of the
Project Browser under their parent link. Nested links do not display
in the Manage Links dialog.
Transferring Project Standards
Between Linked Revit Models
If you open the host
model, you cannot open the linked model in the same Revit Architecture session.
However, you can transfer project standards from the linked model
to the host model using the Transfer Project Standards tool. See
Transferring Project Standards.